Extraction method of natural gardenia yellow and application of natural gardenia yellow in roasted seeds and nuts

Abstract

The invention provides an extraction method of natural gardenia yellow and application of the natural gardenia yellow in roasted seeds and nuts. The roasted seeds and nuts comprise nut raw materials, seasonings, liquorice, pepper, fennel, galangal, a sweetening agent and a gardenia yellow extract. The gardenia yellow extract obtained by the invention can be used as a natural coloring agent, has no peculiar smell, does not influence the original taste and fragrance of the roasted seeds and nuts, does not contain substances harmful to human bodies, such as heavy metals and harmful additives, adds golden yellow color to the roasted seeds and nuts, makes the appearance more attractive, and improves the purchase desire and visual enjoyment of consumers.

Description

Technical Field

[0001] The invention belongs to the technical field of food processing, relates to roasted seeds and nuts, and in particular to a method for extracting natural gardenia yellow and application thereof in roasted seeds and nuts. Background Art

[0002] Nuts and roasted seeds refer to foods made from nuts, seeds or their kernels as the main raw materials, mainly including melon seeds, walnuts, pistachios, cashews, hazelnuts, etc. Nuts and roasted seeds contain a variety of nutrients such as protein, minerals, vitamins, etc. They have high nutritional value, rich flavors and a wide variety of varieties. They are a kind of snack food favored by consumers.

[0003] Melon seeds are a general term for a snack. The most consumed seeds are non-melon seeds - sunflower seeds. Some people also eat pumpkin seeds and watermelon seeds. Melon seeds themselves are very nutritious, and their vitamin, protein and oil content are among the best. Eating a handful of melon seeds every day is good for calming emotions, preventing aging, preventing adult diseases, and can cure insomnia, enhance memory, etc. Summary of the invention

[0005] The invention provides a method for extracting natural gardenia yellow and application of the method in roasted seeds and nuts. The gardenia yellow extract obtained by the invention can be used as a natural colorant, has no peculiar smell, will not affect the original taste and aroma of roasted seeds and nuts, and also does not contain substances harmful to the human body, such as heavy metals and harmful additives, thereby adding a golden color to the roasted seeds and nuts, making their appearance more attractive, and enhancing consumers' purchasing desire and visual enjoyment.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a method for extracting natural gardenia yellow, which comprises the following steps:

[0008] 1) removing the peel of the Gardenia jasminoides fruit, drying it in the sun, grinding it into powder, sieving it, adding water and performing the first extraction at room temperature;

[0009] 2) performing solid-liquid separation on the first extract, taking the supernatant as the first extract, adding water to the remaining solid mixture and ultrasonically extracting at room temperature to obtain a second extract, performing solid-liquid separation on the second extract, and taking the supernatant as the second extract;

[0010] 3) The first extract and the second extract were combined, 0.005 wt.% pectinase and 1.5 wt.% diatomaceous earth were added, stirred thoroughly, and allowed to stand for 40-50 min. After filtering through a filter membrane with a pore size of 0.22 mm, microfiltration was performed again using a ceramic membrane to obtain a microfiltrate;

[0011] 4) Drying the microfiltrate obtained in step 3) to obtain a gardenia yellow extract.

[0012] As a preferred embodiment of the present invention, in step 1), the mesh size of the sieve is 30-40 meshes, and the liquid-to-solid ratio of the first extraction is 10:1.

[0013] As a preferred embodiment of the present invention, in step 2), the ultrasonic power is 225-245 W and the extraction time is 30 min.

[0014] As a preferred embodiment of the present invention, in step 3), the microfiltration condition is that the surface flow rate is 1.5 m / s at 0.4 MPa and the pore size of the ceramic membrane is 0.1-0.2 μm.

[0015] As a preferred embodiment of the present invention, in step 1) and step 2), solid-liquid separation is performed using a horizontal spiral sedimentation centrifuge at a rotation speed of 4000-4500 r / min and centrifugation for 10-20 min.

[0016] The present invention also provides a gardenia yellow extract obtained by the above-mentioned natural gardenia yellow extraction method.

[0017] The present invention also provides application of the gardenia yellow extract in stir-frying seeds and nuts.

[0018] As a preferred embodiment of the present invention, the raw materials for roasting nuts include 800-1200 parts of nut raw materials, 96-144 parts of edible salt, 68-102 parts of white sugar, 0.08-0.12 parts of monosodium glutamate, 0.8-1.2 parts of licorice, 0.8-1.2 parts of pepper, 1.76-2.64 parts of fennel, 1.2-1.8 parts of ginger, 0.96-0.144 parts of cyclamate, 1.2-1.8 parts of acesulfame potassium, 0.4-0.6 parts of saccharin sodium, 0.4-0.6 parts of sucralose and 0.08-0.12 parts of gardenia yellow extract.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The gardenia yellow extract obtained by the present invention can be used as a natural colorant, has no peculiar smell, does not affect the original taste and aroma of fried seeds and nuts, and does not contain substances harmful to the human body, such as heavy metals and harmful additives, and adds a golden color to the fried seeds and nuts, making their appearance more attractive, thereby enhancing consumers' purchasing desire and visual enjoyment.

[0021] 2) The method of the present invention is simple and suitable for industrial production. DETAILED DESCRIPTION

[0022] 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 making creative work are within the scope of protection of the present invention.

[0023] The present invention first provides a method for extracting natural gardenia yellow, which comprises the following steps:

[0024] 1) removing the peel of the Gardenia jasminoides fruit, drying it in the sun, grinding it into powder, passing it through a 30-40 mesh sieve, adding water for the first extraction at room temperature, with a liquid-to-solid ratio of 10:1;

[0025] 2) performing solid-liquid separation on the first extract, taking the supernatant as the first extract, adding water to the remaining solid mixture and ultrasonically extracting at room temperature to obtain a second extract, performing solid-liquid separation on the second extract, and taking the supernatant as the second extract; the ultrasonic power is 230 W, and the extraction time is 30 min;

[0026] Both solid-liquid separations were performed using a horizontal spiral sedimentation centrifuge at a speed of 4000 r / min for 10 min.

[0027] 3) The first extract and the second extract were combined, 0.005wt.% pectinase and 1.5wt.% diatomaceous earth were added, the mixture was stirred thoroughly, and then allowed to stand for 40-50 minutes. After filtering through a filter membrane with a pore size of 0.22mm, microfiltration was performed again using a ceramic membrane to obtain a microfiltrate; the microfiltration conditions were a surface flow rate of 1.5m / s at 0.4MPa and a pore size of 0.1-0.2μm for the ceramic membrane;

[0028] 4) Drying the microfiltrate obtained in step 3) to obtain a gardenia yellow extract.

[0029] The present invention also provides the use of the gardenia yellow extract in roasted nuts and seeds. The raw materials for roasted nuts and seeds include 800-1200 parts of nut raw materials, 96-144 parts of edible salt, 68-102 parts of white granulated sugar, 0.08-0.12 parts of monosodium glutamate, 0.8-1.2 parts of licorice, 0.8-1.2 parts of prickly ash, 1.76-2.64 parts of cumin, 1.2-1.8 parts of ginger, 0.96-0.144 parts of cyclamate, 1.2-1.8 parts of acesulfame potassium, 0.4-0.6 parts of saccharin sodium, 0.4-0.6 parts of sucralose and 0.08-0.12 parts of gardenia yellow extract in parts by weight.

[0030] The addition of edible salt is used to adjust the taste, making the fried food more delicious, and can also extend the shelf life and maintain food safety by inhibiting the growth of microorganisms. The addition of white sugar contrasts with the saltiness of edible oil and increases the layering of the fried food.

[0031] The addition of licorice adds complexity to the flavor of nutty roasted nuts. The addition of pepper, cumin, and galangal is used for seasoning, adding aroma and spiciness to the roasted nuts, and the combination can form a rich and diverse flavor.

[0032] Gardenia yellow extract can be used as a natural colorant to add a golden color to roasted nuts, making them more attractive in appearance, enhancing consumers' purchasing desire and visual enjoyment, without affecting the original taste and aroma of the roasted nuts. It also does not contain substances harmful to the human body, such as heavy metals and harmful additives.

[0033] The use of Gardenia Yellow Extract can improve the overall quality of roasted nuts. Its bright color and stable properties make it difficult for roasted nuts to fade or change color during storage and transportation, maintaining the freshness and appearance of the product. At the same time, Gardenia Yellow Extract also has a certain antioxidant effect, which can extend the shelf life of roasted nuts.

[0034] The combined use of various spices and seasonings and the gardenia yellow extract of the present invention makes the fried seeds and nuts have a complex and rich flavor, which is both salty and sweet, and also has a unique flavor of spiciness and spices, adds a golden color, makes the appearance more attractive, and enhances consumers' purchasing desire and visual enjoyment.

[0035] In the present invention, the processing method of roasted sunflower seeds comprises the following steps: washing the sunflower seeds, adding gardenia yellow extract and other raw materials for coloring and seasoning, boiling, baking, cooling, air selection, hand selection, gold inspection and packaging.

[0036] Example 1

[0037] The roasted nuts provided in this embodiment include, by weight, 1000 parts of sunflower seeds, 120 parts of edible salt, 85 parts of white sugar, 0.1 parts of monosodium glutamate, 1 part of licorice, 1 part of prickly ash, 2.2 parts of cumin, 1.5 parts of ginger, 1.2 parts of cyclamate, 1.5 parts of acesulfame potassium, 0.5 parts of saccharin sodium, 0.5 parts of sucralose and 0.1 parts of gardenia yellow extract.

[0038] Wherein, the preparation method of the gardenia yellow extract is as described above.

[0039] The processing method of sunflower seeds is as follows: washing the sunflower seeds, adding gardenia yellow extract and other raw materials for coloring and seasoning, boiling, baking, cooling, air selection, hand selection, gold inspection and packaging.

[0040] Example 2

[0041] The roasted nuts provided in this embodiment include 800 parts of sunflower seeds, 96 parts of edible salt, 68 parts of white sugar, 0.08 parts of monosodium glutamate, 0.8 parts of licorice, 0.8 parts of pepper, 1.76 parts of cumin, 1.2 parts of ginger, 0.96 parts of cyclamate, 1.2 parts of acesulfame potassium, 0.4 parts of saccharin sodium, 0.4 parts of sucralose and 0.08 parts of gardenia yellow extract in terms of weight.

[0042] Wherein, the preparation method of the gardenia yellow extract is as described above.

[0043] The processing method of sunflower seeds is as follows: washing the sunflower seeds, adding gardenia yellow extract and other raw materials for coloring and seasoning, boiling, baking, cooling, air selection, hand selection, gold inspection and packaging.

[0044] Example 3

[0045] The roasted nuts provided in this embodiment include, by weight, 1200 parts of sunflower seeds, 144 parts of edible salt, 102 parts of white sugar, 0.12 parts of monosodium glutamate, 1.2 parts of licorice, 1.2 parts of prickly ash, 2.64 parts of cumin, 1.8 parts of ginger, 0.144 parts of cyclamate, 1.8 parts of acesulfame potassium, 0.6 parts of saccharin sodium, 0.6 parts of sucralose and 0.12 parts of gardenia yellow extract.

[0046] Wherein, the preparation method of the gardenia yellow extract is as described above.

[0047] The processing method of sunflower seeds is as follows: washing the sunflower seeds, adding gardenia yellow extract and other raw materials for coloring and seasoning, boiling, baking, cooling, air selection, hand selection, gold inspection and packaging.

[0048] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for extracting natural gardenia yellow, characterized in that: The extraction method comprises the following steps: 1) removing the peel of the Gardenia jasminoides fruit, drying it in the sun, grinding it into powder, sieving it, adding water and performing the first extraction at room temperature; 2) performing solid-liquid separation on the first extract, taking the supernatant as the first extract, adding water to the remaining solid mixture and ultrasonically extracting at room temperature to obtain a second extract, performing solid-liquid separation on the second extract, and taking the supernatant as the second extract; 3) The first extract and the second extract were combined, 0.005 wt.% pectinase and 1.5 wt.% diatomaceous earth were added, stirred thoroughly, and allowed to stand for 40-50 min. After filtering through a filter membrane with a pore size of 0.22 mm, microfiltration was performed again using a ceramic membrane to obtain a microfiltrate; 4) Drying the microfiltrate obtained in step 3) to obtain a gardenia yellow extract.

2. The method for extracting natural gardenia yellow according to claim 1, characterized in that: In step 1), the mesh size of the sieve is 30-40 meshes, and the liquid-to-solid ratio of the first extraction is 10:

1.

3. The method for extracting natural gardenia yellow according to claim 1, characterized in that: In step 2), the ultrasonic power is 225-245 W and the extraction time is 30 min.

4. The method for extracting natural gardenia yellow according to claim 1, characterized in that: In step 3), the microfiltration condition is that the surface flow rate is 1.5 m / s at 0.4 MPa and the pore size of the ceramic membrane is 0.1-0.2 μm.

5. The method for extracting natural gardenia yellow according to claim 1, characterized in that: In step 1) and step 2), solid-liquid separation is performed by a horizontal spiral sedimentation centrifuge at a rotation speed of 4000-4500 r / min for 10-20 min.

6. The gardenia yellow extract obtained by the method for extracting natural gardenia yellow as claimed in claim 1.

7. Use of the Gardenia Yellow extract as claimed in claim 6 in stir-frying seeds and nuts.

8. The use according to claim 7, characterized in that: In terms of weight, the raw materials for roasting nuts include 800-1200 parts of nut raw materials, 96-144 parts of edible salt, 68-102 parts of white granulated sugar, 0.08-0.12 parts of MSG, 0.8-1.2 parts of licorice, 0.8-1.2 parts of pepper, 1.76-2.64 parts of fennel, 1.2-1.8 parts of ginger, 0.96-0.144 parts of cyclamate, 1.2-1.8 parts of acesulfame potassium, 0.4-0.6 parts of saccharin sodium, 0.4-0.6 parts of sucralose and 0.08-0.12 parts of gardenia yellow extract.