Germinated flaxseed preparation method capable of improving nutritional value and detoxification rate

Abstract

The invention relates to the technical field of preparation of sprouted flaxseeds, and provides a sprouted flaxseed preparation method capable of improving nutritional value and detoxification rate, which comprises the following steps: S1, material selection: weighing 10kg of flaxseeds which are full in grains and have no damage on the surface, leaching with distilled water for 3 times, soaking in distilled water for 30 minutes, and taking out the material; pouring into a stainless steel screen square frame, wherein the accumulation thickness is 30-50mm lower than the height of the screen; s2, glue pumping: the stainless steel screen square frame in S1 is conveyed to a glue pumping device through a conveying belt, and flax glue on the surfaces of the flaxseeds in the stainless steel screen square frame is sucked off through the glue pumping device; s3, feeding: feeding the stainless steel screen square frame after stopping the last air suction in the S2 into a goods shelf by using a conveying belt, and transferring the goods shelf into a culture room; s4, culturing, namely putting the stainless steel screen containing the degummed flaxseeds in the S3 into a dark culture room with the temperature of 20-30 DEG C and the humidity of 75-90%, and standing and germinating for 4 days.

Description

Technical Field

[0001] The invention relates to the technical field of sprouted flax seeds, and in particular to a method for preparing sprouted flax seeds with improved nutritional value and detoxification rate. Background Art

[0002] Flaxseed, also known as sesame seed, is the seed of flax, a plant of the linum family. It is rich in oil and protein, and is an excellent source of arginine, glutamine and histidine, which helps to improve immunity. Flaxseed is rich in fatty acids and is one of the oldest edible oil crops. Studies have shown that many physiological and metabolic changes occur in grains after absorbing water and germinating, mainly in the activation and generation of enzymes, and the recovery of cell physiological activity. At the same time, accompanied by complex biochemical metabolism, the nutritional components and physical and chemical properties of grains have undergone significant changes. Among them, flax seed germination is the result of internal factors and environmental factors. The internal factors are seed quality (seed germination ability and vitality), and the environmental factors are temperature, moisture and oxygen during seed soaking and germination. Flax seed quality generally refers to the intrinsic germination ability of the seeds, and its key indicators are seed germination rate and germination potential. Seed germination rate refers to the percentage of seeds that germinate normally during the germination treatment period in the early germination period to the number of test seeds. Among them, seed germination rate is an important indicator for distinguishing the ability of field germination and seedling formation;

[0003] After searching, it was found that the document "The Effect of Different Germination Lengths on the Nutritional Quality of Flax Seeds" proposed by Dang Ling et al. recorded that when cultivating flax seeds, they took 100 intact flax seeds, washed them with sterile water three times, soaked them in water for 30 minutes, and then spread them on a sterilized canvas. They were placed in a constant temperature incubator at the optimal temperature, sprayed with water once every 2 hours, and the germination rate of flax seeds at different temperatures was measured after 24 hours. This method can cultivate sprouted flax seeds as needed, but the disadvantage is that the number of single-layer seeds is too small. If cultivated in large quantities, the operation process of spreading them is time-consuming, and the process did not report the effect of this process on increasing the content of active ingredients in flax seeds and reducing harmful substances such as cyanogenic glycosides, nor did it recover flax gum, and did not explain the increase in the content of active ingredients in flax seeds and the reduction of harmful substances such as cyanogenic glycosides.

[0004] The document "The Effect of Light Germination on the Content of Lipid Accompanying Substances in Flaxseed Oil" proposed by Liu Xiaochen et al. states that when culturing flax seeds, about 30g of flax seeds are taken, soaked in 25℃ water for 4h, rinsed with running water 3 times, part of the gum is removed, water is placed in a germination tray, a layer of wet gauze is spread on the mesh, a thin layer of flax seeds is spread on the gauze, the water does not cover the flax seeds, and the seeds are placed in a constant temperature room at (25±3)℃, and the water is changed once a day to keep the seeds moist. This method cultivates flax seeds in a single layer, the number of single cultures is small, and the pre-treatment steps are complicated and time-consuming. In addition, the paper only explores the changes in the lipid accompanying components and antioxidant activity of flax seed oil during flax seed germination, and does not report on the increase in the content of active ingredients in flax seeds and the reduction of harmful substances such as cyanogenic glycosides, and the flax gum is also not processed;

[0005] In summary, the existing technologies for promoting germination of flax seeds mainly include soaking seeds and watering seeds in order to improve the germination rate of flax seeds. However, the above conventional germination methods have some technical defects:

[0006] First, the conventional germination method is not suitable for germinating flax seeds in large quantities. After being soaked in water, a thick layer of flax gum is attached to the surface of the flax seeds. When multiple layers are stacked for germination, the presence of flax gum makes the ventilation between the flax seeds poor, resulting in the lower layer of flax seeds becoming moldy and not germinating. In addition, the germination products are easy to clump and have high hardness, which makes it impossible to produce germination in large quantities with high density.

[0007] Second, flax seeds contain cyanogenic glycosides, which have good water solubility. Cyanogenic glycosides can be hydrolyzed to generate highly toxic hydrogen cyanide, thereby causing harm to the human body. The above-mentioned conventional germination method does not explain how to reduce harmful substances such as cyanogenic glycosides. In view of this, the present invention proposes a method for preparing sprouted flax seeds with improved nutritional value and detoxification rate. Summary of the invention

[0008] The invention provides a method for preparing sprouted flax seeds with improved nutritional value and detoxification rate, which solves the problem that the flax seed sprouting method in the prior art cannot be used for large-scale and high-density sprouting production.

[0009] The technical scheme of the present invention is as follows: A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0010] S1: Material selection: weigh 10 kg of flax seeds with full and undamaged particles, rinse them with distilled water for 3 times, soak them in distilled water for 30 min, pour them into a stainless steel sieve frame (400×600×100 mm, 40 mesh), and the stacking thickness should be 30-50 mm lower than the sieve height;

[0011] S2: extracting glue, the stainless steel mesh square frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh square frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh square frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket, a vibration motor fixed on the outside of the collecting bucket, a flax glue storage tank connected to the outlet end of the collecting bucket through a conduit, and an air suction device connected to the air outlet of the flax glue storage tank through a conduit. The specific implementation process is as follows:

[0012] (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor starts to vibrate, vibrates once, the vibration frequency is 20-50Hz, and the duration is 20s;

[0013] (2) Start the suction equipment, and the suction force of the suction equipment is 500-1000L / min, the wind speed is 2-10m / s, the negative pressure value is -2000-3000Pa, and the degumming is continued for 20s;

[0014] (3) Repeat the vibration and suction for 3 to 5 times, and introduce the sucked flax gum into the flax gum storage tank, and then concentrate and spray dry the flax gum in the flax gum storage tank;

[0015] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0016] S4: Cultivation: Place the stainless steel screen containing the degummed flax seeds in S3 in a dark culture room at a temperature of 20°C-30°C and a humidity of 75%-90% for germination for 4 days.

[0017] Preferably, in S1, during the soaking process of flax seeds, it is necessary to ensure that each flax seed absorbs water and swells, and the floating flax seeds are screened out. After the flax seeds are soaked and taken out, the surface water needs to pass through and then poured into a stainless steel sieve frame to drain.

[0018] Preferably, in S2, the discharge port of the flax gum storage tank (103) is provided with a control valve, and after the experiment, the flax gum is discharged through the outlet end of the control valve and dried by a concentration device and a spray drying device.

[0019] Preferably, in S2, the silicone pad is a rectangular ring structure, and the silicone pad is slidably matched with the material opening of the collecting hopper.

[0020] Preferably, in S4, the specific process of culturing the sprouted flaxseed is as follows:

[0021] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0022] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 20°C-30°C;

[0023] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 75%-90%;

[0024] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0025] The working principle and beneficial effects of the present invention are:

[0026] 1. The present invention can absorb the flax gum produced by the swelling of flax seeds in water, thereby increasing the air permeability of flax seed stacking culture and realizing high-density stacking culture, which is beneficial for seeds to better respire, enhance metabolism, and promote germination;

[0027] 2. The seed germination method provided by the present invention is simple to implement, effectively solves the technical problem that the existing germination promotion technology cannot meet the needs of mass production, and will bring good economic benefits;

[0028] 3. The present invention can simultaneously recycle high-quality flaxseed gum for subsequent production of food, beverages, cakes and candies;

[0029] 4. The main active ingredients in the products after germination, such as α-linolenic acid, lignans, fatty acids, amino acids, vitamins, and γ-aminobutyric acid, have increased significantly, greatly improving the nutritional value of flax seeds. At the same time, cyanogenic glycosides have been significantly reduced, reducing the harmful substances in flax seeds, thereby improving the detoxification rate of flax seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Figure 1 The present invention is a schematic structural diagram of a method for preparing sprouted flaxseeds with improved nutritional value and detoxification rate;

[0032] Figure 2 It is a structural schematic diagram of the degumming device of the present invention;

[0033] Figure 3 This is a schematic diagram of the germination rate and degumming rate of an embodiment of the present invention;

[0034] Figure 4 This is a diagram showing changes in fat content during the culture process of the present invention;

[0035] Figure 5 This is a graph showing changes in fatty acid content during the cultivation process of the present invention;

[0036] Figure 6This is a graph showing changes in lignan content during the cultivation process of the present invention;

[0037] Figure 7 It is a graph showing the change of cyanogenic glycoside content during the cultivation process of the present invention;

[0038] Figure 8 This is a graph showing changes in the content of γ-aminobutyric acid during the culture process of the present invention;

[0039] Fig. 9 It is a graph showing changes in protein content during the cultivation process of the present invention;

[0040] Fig.10 It is a graph showing changes in amino acid composition during the cultivation process of the present invention;

[0041] Fig.11 This is a graph showing changes in vitamin C and vitamin E content during the cultivation process of the present invention.

[0042] In the figure: 101, collecting bucket; 102, vibrating motor; 103, flax gum storage tank; 104, suction equipment. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1:

[0045] like Figure 1 to Figure 3 As shown, this embodiment proposes a method for preparing sprouted flax seeds with improved nutritional value and detoxification rate, comprising the following steps:

[0046] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0047] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0048] (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrates once, the vibration frequency is 50 Hz, and the duration is 20 seconds;

[0049] (2) Start the suction device 104, and the suction force of the suction device 104 is 1000 L / min, the wind speed is 10 m / s, the negative pressure value is -2500 Pa, and the degumming is continued for 20 seconds;

[0050] (3) Repeat the vibration and suction for 5 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0051] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0052] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0053] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0054] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 25°C;

[0055] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 85%;

[0056] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0057] By absorbing the flax gum produced when flax seeds come into contact with water, the air permeability of the flax seed stacking culture is increased, and high-density stacking culture is achieved, which is beneficial for the seeds to respire better, enhance metabolism, and promote germination; the entire seed germination method is simple to implement, and effectively solves the technical problem that the existing germination promotion technology cannot meet the needs of mass production, which will bring good economic benefits; high-quality flax seed gum can be recovered through the flax gum storage tank 103 and used for the subsequent production of food, beverages, cakes and candies; the main active ingredients in the germinated products, such as α-linolenic acid, lignans, fatty acids, amino acids, vitamins, and γ-aminobutyric acid, are significantly increased, which greatly improves the nutritional content of flax seeds, while cyanogenic glycosides are significantly reduced, reducing harmful substances in flax seeds, thereby improving the detoxification rate of flax seeds.

[0058] Furthermore, in S2, a control valve is provided at the discharge port of the flax gum storage tank 103. After the experiment, the flax gum is discharged through the outlet end of the control valve via a conduit, and is dried by a concentration device and a spray drying device. The silica gel pad is a rectangular ring structure, and the silica gel pad is slidably matched with the discharge port of the collecting hopper 101.

[0059] Embodiment 2:

[0060] A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0061] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0062] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0063] (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrates once, the vibration frequency is 35 Hz, and the duration is 20 seconds;

[0064] (2) Start the suction device 104, and the suction force of the suction device 104 is 800L / min, the wind speed is 6m / s, the negative pressure value is -2000Pa, and the degumming is continued for 20s;

[0065] (3) Repeat the vibration and suction for 4 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0066] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0067] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0068] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0069] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 20°C;

[0070] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 80%;

[0071] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0072] Embodiment three:

[0073] A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0074] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0075] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0076] (7) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrating once, with a vibration frequency of 20 Hz and a duration of 20 seconds;

[0077] (8) Start the suction device 104, and the suction force of the suction device 104 is 600L / min, the wind speed is 2m / s, the negative pressure value is -2000Pa, and the degumming is continued for 20s;

[0078] (9) Repeat the vibration and suction for 3 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0079] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0080] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0081] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0082] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 30°C;

[0083] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 75%;

[0084] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0085] Embodiment 4:

[0086] A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0087] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0088] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0089] (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrates once, the vibration frequency is 35 Hz, and the duration is 20 seconds;

[0090] (2) Start the suction device 104, and the suction force of the suction device 104 is 1000 L / min, the wind speed is 6 m / s, the negative pressure value is -2500 Pa, and the degumming is continued for 20 seconds;

[0091] (3) Repeat the vibration and suction for 3 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0092] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0093] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0094] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0095] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 25°C;

[0096] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 85%;

[0097] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0098] Embodiment five:

[0099] A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0100] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0101] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0102] (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrates once, the vibration frequency is 50 Hz, and the duration is 20 seconds;

[0103] (2) Start the suction device 104, and the suction force of the suction device 104 is 800L / min, the wind speed is 4m / s, the negative pressure value is -2500Pa, and the degumming is continued for 20s;

[0104] (3) Repeat the vibration and suction for 4 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0105] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0106] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0107] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0108] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 20°C;

[0109] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface of the flax seeds moist, and the humidity is maintained at 75%;

[0110] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0111] Embodiment six:

[0112] A method for preparing sprouted flax seeds with improved nutritional value and detoxification rate comprises the following steps:

[0113] S1: Material selection: weigh 10 kg of flax seeds with full particles and no damage, rinse with distilled water for 3 times and soak in distilled water for 30 minutes. During the soaking process, it is necessary to ensure that each flax seed absorbs water and swells. The floating flax seeds are screened out and poured into a stainless steel screen frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the screen height. The water on the surface of the flax seeds is drained by pouring into the stainless steel screen frame;

[0114] S2: extracting glue, the stainless steel mesh frame in S1 is conveyed to the glue extracting device through a conveyor belt, and the contact between the stainless steel mesh frame and the glue extracting device is sealed with a silicone pad, and the flax glue on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the glue extracting device. The glue extracting device includes a collecting bucket 101, a vibration motor 102 fixed to the outside of the collecting bucket 101, a flax glue storage tank 103 connected to the outlet end of the collecting bucket 101 through a conduit, and an air suction device 104 connected to the air outlet of the flax glue storage tank 103 through a conduit. The specific implementation process is as follows:

[0115] (16) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor 102 starts to vibrate, vibrating once, with a vibration frequency of 20 Hz and a duration of 20 seconds;

[0116] (17) Start the suction device 104, and the suction force of the suction device 104 is 500L / min, the wind speed is 4m / s, the negative pressure value is -3000Pa, and the degumming is continued for 20s;

[0117] (18) Repeat the vibration and suction for 5 times, introduce the sucked flax gum into the flax gum storage tank 103, and then concentrate and spray-dry the flax gum in the flax gum storage tank 103;

[0118] S3: Feeding: the stainless steel mesh frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room;

[0119] S4: Cultivation: The stainless steel mesh shelves containing degummed flax seeds in S3 are cultivated in a dark cultivation room. The specific process of cultivating the sprouted flax seeds is as follows:

[0120] (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame into a dark culture room through a wheeled shelf to avoid severe vibration that may cause the airway formed between the flax seeds to close;

[0121] (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 30°C;

[0122] (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface flax seeds moist at 75%;

[0123] (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take timely remedial measures.

[0124] Embodiment seven:

[0125] The present invention also provides a sprouted flax seed dietary powder, which comprises, calculated by weight percentage, 18% of flax seed powder, 54% of sprouted flax seed powder, 8% of tartary buckwheat and quinoa powder, 4% of black bean powder, 2.4% of oats, 1.4% of psyllium powder, 2.4% of linseed oil microcapsule powder, 0.2% of linseed peptide, 8% of erythritol, 1.4% of maltodextrin and 0.2% of citric acid.

[0126] A comparative example is set to be compared with Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5 and Embodiment 6, and the specific implementation steps of the comparative example are as follows:

[0127] (1) Material selection: 10 kg of flax seeds with full grains and no damage were weighed, rinsed with distilled water for 3 times, and then soaked in distilled water for 30 min. During the soaking process, it was necessary to ensure that each flax seed absorbed water and swelled. The floating flax seeds were screened out and poured into a stainless steel sieve frame (400×600×100 mm, 40 mesh) with a stacking thickness less than 40 mm of the sieve height. The water on the surface of the flax seeds was drained by pouring into the stainless steel sieve frame;

[0128] (2) The stainless steel mesh frame is sent to the shelf by a conveyor belt. When the shelf is full, it is pushed to the culture room (darkness, temperature 25°C, humidity 85%) for germination culture by the roller below;

[0129] The flaxseed germination rate and flax gum residue rate of Example 1, Example 2, Example 3, Example 4, Example 5, Example 6 and the comparative example were calculated according to the following formula. The specific calculation results are as follows: Figure 3 As shown in the table;

[0130]

[0131] The active ingredients of flax seeds before and after germination were compared through experiments. The specific experimental steps are as follows:

[0132] (1) Select brown flax seeds and do the following: sort the flax seeds and weigh 12 portions of 80 g flax seeds (accurate to 0.001 g) and pour them into 12 beakers respectively;

[0133] (2) Wash with distilled water for 3 times, soak in water for 30 minutes, and then use a glue extraction device to extract the glue, repeat 3-5 times, and place in a dark, closed incubator at a temperature of 25°C and a humidity of 85%, and let it stand for 4 days for germination;

[0134] (3) Samples were collected every 24 hours, freeze-dried, crushed into 40-mesh powder, and stored at -20°C;

[0135] (4) The active ingredients of flax seeds at different stages of the germination process were measured, including fat content and fatty acid composition, lignan content, cyanogenic glycoside content, γ-aminobutyric acid content, protein content and amino acid composition, and vitamin content.

[0136] The fat content was determined according to the method specified in GB 5009.6-2016. Figure 5 As shown in the figure, the fat content in flaxseed increases first and then decreases with the increase of germination time. Since the rapid growth of the embryo and root during the germination process requires a lot of energy, fat is used first as a high-energy reserve substance, which accelerates the consumption of fat.

[0137] The fatty acid content was determined according to the method specified in GB 5009.168-2016. The results are as follows: Figure 6 As shown in the figure, palmitic acid, stearic acid, oleic acid, linoleic acid and α-linolenic acid change significantly during the germination process of flaxseed, among which α-linolenic acid has the highest proportion of fatty acids.

[0138] Among them, the experimental process of determining the lignan content is as follows:

[0139] First, 0.5 g of flaxseed was weighed and mixed with 10 mL of 95% ethanol, and 10 mL of 1 M NaOH was added. The mixture was ultrasonicated at 60 °C for 1 h and centrifuged at 4000 rpm for 5 min.

[0140] Then, the mixture was washed with 10 mL of 95% ethanol and centrifuged at 4000 rpm for 5 min. The supernatants were combined and adjusted to pH 3 with 2 M sulfuric acid.

[0141] The resulting mixture was then defatted with hexane (1:5, W / V), diluted to 10 mL with distilled water, and filtered through a 0.45 μm organic phase microporous filter before testing;

[0142] Then, high performance liquid chromatography was used for detection, and the specific chromatographic conditions were as follows: the chromatographic column adopted was reverse phase C18 (5μm, 250×4.6mm); column temperature: 25°C; injection volume: 10μL; mobile phase: A-0.01M phosphate buffer pH=2.8, B-acetonitrile, AB: 0-20min (95:5, v / v), 21-22min (80:20, v / v), 23-25min (30:70, v / v), 26-30min (95:5, v / v); flow rate: 1mL / min; detection wavelength: 280nm.

[0143] The experimental results are as follows Figure 7 As shown, it can be seen that germination has a certain effect on lignans, which first increases and then decreases. The lignan content reaches a peak of 2.53μg / mL after germination for 48 hours.

[0144] Among them, the experimental process for determining the content of cyanogenic glycosides is as follows:

[0145] First, 200 mg of brown flax seeds and golden flax seeds with different germination times were accurately weighed, 2 mL of methanol was added, ultrasonic extraction was performed for 30 min, centrifuged at 5000 rpm / min for 10 min, repeated 3 times, and the supernatants were combined;

[0146] Then, take 1 mL of the extract and add 1 mL of distilled water to mix, and then filter through a 0.45 μm organic phase microporous filter membrane for testing;

[0147] The product was then detected by high performance liquid chromatography, with the following specific chromatographic conditions: mobile phase flow rate of 0.3 mL / min, column oven temperature of 30°C, mobile phase A consisting of 0.1% formic acid in water, mobile phase B consisting of 0.1% formic acid in acetonitrile, and gradient elution program: 0–4 min, 15% B; 5–12 min, 15–50% B; 12–12.1 min, 50–15% B; 12.1–15 min, 15% B.

[0148] The experimental results are as follows Figure 8 As shown, it can be seen that germination can change the content of cyanogenic glycosides in flax seeds, and the content of cyanogenic glycosides decreases significantly with the increase of germination time.

[0149] Among them, the content of γ-aminobutyric acid was determined according to the method specified in T / CFIAS 3007-2022. The results are as follows Fig. 9 As shown, the γ-aminobutyric acid content is positively correlated with the germination time.

[0150] The protein content was determined according to the method specified in GB 5009.5-2010. Fig.10As shown in the figure, the protein content in flax seeds increases first and then decreases with the increase of germination time. It reaches the highest value of 24.35% at 48h of germination, which is about 8.25% higher than the protein content of ungerminated flax seeds.

[0151] The amino acid composition analysis was carried out according to the method specified in GB 5009.124-2016. The results are as follows: Fig.11 As shown in the table, it can be seen that during the entire germination process, the total amino acid content of flax seeds increases with the increase of germination time, and the proportion of essential amino acids increases at the same time.

[0152] Among them, the vitamin C content was determined according to the method specified in GB 5009.86-2016, and the vitamin E content was determined according to the method specified in GB5009.82-2016. The results are as follows Fig.11 As shown, vitamin C and vitamin E were almost undetectable in flax seeds before germination. After germination, the vitamin C content increased significantly, reaching 86.28 mg / 100 g. Compared with vitamin C, the change in vitamin E content was relatively slow, but there was also a clear upward trend.

[0153] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing sprouted flaxseed with improved nutritional value and detoxification rate, characterized in that: The steps include: S1: Material selection: weigh 10 kg of flax seeds with full and undamaged particles, rinse them with distilled water for 3 times, soak them in distilled water for 30 min, pour them into a stainless steel sieve frame (400 × 600 × 100 mm, 40 mesh) and make the stacking thickness 30-50 mm lower than the sieve height; S2: extracting gum, the stainless steel mesh frame in S1 is conveyed to the gum extracting device via a conveyor belt, and the contact between the stainless steel mesh frame and the gum extracting device is sealed with a silicone pad, and the gum on the surface of the flax seeds in the stainless steel mesh frame is sucked off by the gum extracting device. The gum extracting device comprises a collecting hopper (101), a vibration motor (102) fixed outside the collecting hopper (101), a flax gum storage tank (103) connected to the outlet end of the collecting hopper (101) via a conduit, and an air suction device (104) connected to the air outlet of the flax gum storage tank (103) via a conduit. The specific implementation process is as follows: (1) When the stainless steel screen frame of the material is placed on the silicone pad, the vibration motor (102) starts to vibrate, vibrates once, the vibration frequency is 20~50 Hz, and the duration is 20 s; (2) Start the suction device (104), wherein the suction force of the suction device (104) is 500-1000 L / min, the wind speed is 2-10 m / s, the negative pressure value is -2000-3000 Pa, and the degumming is continued for 20 s; (3) Repeat the vibration and suction for 3 to 5 times, introduce the sucked flax gum into the flax gum storage tank (103), and then concentrate and spray-dry the flax gum in the flax gum storage tank (103); S3: Feeding: the stainless steel screen frame after the last suction in S2 stops is sent to the shelf by a conveyor belt, and the shelf is then transferred to the culture room; S4: Cultivation: Place the stainless steel sieve containing the degummed flax seeds in S3 in a dark culture room at a temperature of 20°C-30°C and a humidity of 75%-90% and allow to germinate for 4 days.

2. The method for preparing sprouted flax seeds with improved nutritional value and detoxification rate according to claim 1, characterized in that: In S1, during the soaking process of flax seeds, it is necessary to ensure that each flax seed absorbs water and expands, and the floating flax seeds are screened out. After the flax seeds are soaked and taken out, the surface water needs to pass through and be poured into a stainless steel sieve frame to drain.

3. The method for preparing sprouted flax seeds with improved nutritional value and detoxification rate according to claim 1, characterized in that: In S2, the discharge port of the flax gum storage tank (103) is provided with a control valve. After the experiment is completed, the flax gum is discharged through the outlet end of the control valve and dried by a concentration device and a spray drying device.

4. The method for preparing sprouted flax seeds with improved nutritional value and detoxification rate according to claim 1, characterized in that: In S2, the silicone pad is a rectangular ring structure, and the silicone pad is slidably matched with the material opening of the collection hopper (101).

5. The method for preparing sprouted flax seeds with improved nutritional value and detoxification rate according to claim 1, characterized in that: In S4, the specific process of culturing sprouted flax seeds is as follows: (1) Move the flax seeds in the stainless steel sieve in S3 together with the frame through a wheeled shelf into a dark culture room to avoid severe vibration that may cause the airway formed between the flax seeds to close; (2) Adjust the temperature inside the culture room to maintain the temperature inside the culture room at 20℃-30℃; (3) The culture room is connected to a humidifier with a humidity sensor through a pipe to keep the culture room and the surface flax seeds moist, and the humidity is maintained at 75%-90%; (4) Allow the flax seeds to germinate for 4 days, and check their growth every 24 hours. If any abnormal growth is found, take prompt action.

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