Anti-oxidation shredded polygonatum sibiricum tea and preparation process thereof

Abstract

The invention relates to an antioxidant shredded polygonatum sibiricum tea and a preparation process thereof, the preparation process comprises the following steps: processing a polygonatum sibiricum raw material through a multi-pass steaming-drying process, shredding to prepare polygonatum sibiricum shreds, continuously processing the prepared polygonatum sibiricum shreds through a one-pass or multi-pass steaming-drying process, and in the one-pass or multi-pass steaming-drying process processing process of the polygonatum sibiricum shreds, adding the prepared polygonatum sibiricum shreds into the processed polygonatum sibiricum shreds to obtain the antioxidant shredded polygonatum sibiricum tea. The preparation method comprises the following steps: mixing and steaming the shredded polygonatum sibiricum with other biological antioxidant raw materials, so that effective antioxidant components from the other biological antioxidant raw materials permeate into the surfaces or the interiors of the shredded polygonatum sibiricum, and separating the shredded polygonatum sibiricum from the other biological antioxidant raw materials after the whole technological process is completed; the polygonatum sibiricum shred tea does not contain other biological antioxidant raw materials except the polygonatum sibiricum shred, and the water content of the polygonatum sibiricum shred tea is lower than 10wt% On the premise that other state raw materials are prevented from being added into the shredded polygonatum sibiricum tea, the oxidation resistance index of the shredded polygonatum sibiricum tea is improved, and ingredient loss caused by other methods such as infiltration treatment can also be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of polygonatum sibiricum tea, and in particular to an antioxidant polygonatum sibiricum tea and a preparation process thereof. Background Art

[0002] Modern research shows that Polygonatum sibiricum, as a traditional Chinese medicinal material, has anti-aging, antioxidant, blood sugar lowering, and immunity enhancement effects. Polygonatum sibiricum silk tea is an anti-aging and antioxidant health product that is currently popular on the market.

[0003] After a long period of research, it was found that even under the most suitable brewing conditions, among the antioxidant performance indicators of pure Polygonatum sibiricum tea, DPPH free radical scavenging rate, ABTS+ free radical scavenging rate, and hydroxyl free radical scavenging rate, only the hydroxyl free radical scavenging rate can reach more than 90%, and the ABTS+ free radical scavenging rate is only around 30%. If the antioxidant performance indicators are further improved, simply improving the production process of Polygonatum sibiricum tea will not have a significant effect, and other antioxidant raw materials need to be compounded to make a compound tea drink. However, Polygonatum sibiricum tea uses Polygonatum sibiricum as the raw material, and compounding with other antioxidant raw materials will change the product properties. Moreover, many antioxidant raw materials are in the form of leaves or particles, which are very different from the state of Polygonatum sibiricum and are not suitable for compounding together. It has also been proposed to use other biological raw material infusions or extracts to treat Polygonatum sibiricum, but it has been verified that it is more likely to cause accidental dissolution loss of the original components in Polygonatum sibiricum. Summary of the invention

[0004] The invention solves the problems of the background technology and provides an anti-oxidative polygonatum silk tea and a preparation process thereof.

[0005] The technical solution of the present invention is as follows:

[0006] The invention discloses a polygonatum sibiricum tea with antioxidant effect. The polygonatum sibiricum tea is made by cutting polygonatum sibiricum into strips after processing polygonatum sibiricum raw materials through multiple steaming and drying processes. The invention is characterized in that the polygonatum sibiricum strips have a moisture content of less than 10wt% and have effective antioxidant components from other biological antioxidant raw materials infiltrated on the surface or inside.

[0007] Preferably, the antioxidant polygonatum silk tea as described above does not contain other biological antioxidant raw materials other than polygonatum silk.

[0008] Preferably, the antioxidant polygonatum sibiricum tea as described above has a DPPH free radical scavenging rate ≥84%, an ABTS+ free radical scavenging rate ≥32%, and a hydroxyl free radical scavenging rate >92% of the tea soup after brewing.

[0009] Preferably, the antioxidant polygonatum sibiricum tea as described above has a DPPH free radical scavenging rate ≥86%, an ABTS+ free radical scavenging rate ≥35%, and a hydroxyl free radical scavenging rate ≥94% of the tea soup after brewing.

[0010] Preferably, in the antioxidant polygonatum silk tea as described above, the effective antioxidant components permeated on the surface or inside of the polygonatum silk come from biological antioxidant raw materials such as green tea, wolfberry, vanilla, berries, etc.

[0011] The invention also provides a preparation process of polygonatum sibiricum tea with antioxidant effect. The polygonatum sibiricum raw material is processed through multiple steaming-drying processes and then cut into strips to form polygonatum sibiricum strips. The prepared polygonatum sibiricum strips are further processed through one or more steaming-drying processes. During the one or more steaming-drying processes of the polygonatum sibiricum strips, the polygonatum sibiricum strips are mixed with other biological antioxidant raw materials and steamed together, so that effective antioxidant components from other biological antioxidant raw materials penetrate into the surface or inside of the polygonatum sibiricum strips. After the whole process flow is completed, the polygonatum sibiricum strips are separated from the other biological antioxidant raw materials to obtain the polygonatum sibiricum tea which does not contain other biological antioxidant raw materials except the polygonatum sibiricum strips and has a water content of less than 10wt%.

[0012] Preferably, in the preparation process of the antioxidant Polygonatum sibiricum tea as described above, the other biological antioxidant raw materials are one or more of green tea, wolfberry, vanilla, and berry.

[0013] Preferably, in the preparation process of the antioxidant polygonatum silk tea as described above, when the polygonatum silk is mixed with other biological antioxidant raw materials and steamed together, the weight ratio of the polygonatum silk to other biological antioxidant raw materials is 1:(0.1-5) based on the state of the initial mixing.

[0014] Preferably, in the preparation process of the antioxidant polygonatum silk tea as described above, the polygonatum silk is mixed with other biological antioxidant raw materials and steamed together for more than 2 times.

[0015] Preferably, in the preparation process of the antioxidant polygonatum silk tea as described above, the steaming-drying process of the polygonatum raw material and the steaming-drying process of the polygonatum silk are processed for a total of 6-10 times.

[0016] Beneficial effects:

[0017] The invention provides an antioxidant polygonatum silk tea and a preparation process thereof. First, polygonatum raw materials are processed through multiple steaming-drying processes and then cut into strips to form polygonatum silk. In the subsequent steaming-drying process of the polygonatum silk, the polygonatum silk is mixed with other biological antioxidant raw materials and steamed together, so that effective antioxidant components from other biological antioxidant raw materials can penetrate into the surface or interior of the polygonatum silk. After the entire process flow is completed, the polygonatum silk is separated from the other biological antioxidant raw materials to obtain polygonatum silk tea that does not contain other biological antioxidant raw materials other than the polygonatum silk. The antioxidant performance index of the polygonatum silk tea is improved under the premise of avoiding the addition of other raw materials into the polygonatum silk tea raw materials, and the component loss caused by other methods such as infiltration treatment can also be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The following is a process flow of an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The embodiment of the present invention is based on a preparation process of polygonatum sibiricum tea with antioxidant effect. The polygonatum sibiricum raw material is processed through multiple steaming-drying processes and then cut into strips to make polygonatum sibiricum strips. The prepared polygonatum sibiricum strips are further processed through one or more steaming-drying processes. During the one or more steaming-drying processes of the polygonatum sibiricum strips, the polygonatum sibiricum strips are mixed with other biological antioxidant raw materials and steamed together, so that effective antioxidant components from other biological antioxidant raw materials can penetrate into the surface or interior of the polygonatum sibiricum strips. After completing the entire process flow, the polygonatum sibiricum strips are separated from the other biological antioxidant raw materials to obtain polygonatum sibiricum tea that does not contain other biological antioxidant raw materials other than the polygonatum sibiricum strips, and the water content of the tea is less than 10wt%, and effective antioxidant components from other biological antioxidant raw materials are penetrated into the surface or interior of the tea.

[0020] Combination Figure 1 The process flow may include the following steps:

[0021] S1, the washed Polygonatum sibiricum raw materials are sent to the visual screening conveyor line, on which the defective raw materials are automatically removed, and the normal raw materials are sent to the steamer for the first steaming, and the raw materials after the first steaming are sent to the drying oven for the first drying.

[0022] S2, the raw materials after the first steaming-drying in step S1 are sent into the steamer and the oven again to repeat the steaming-drying process for no less than 2 times.

[0023] After the above steps, the raw material of Polygonatum sibiricum undergoes at least three steaming-drying processes before being shredded, and then enters the shredding process, i.e., step S3.

[0024] S3, cutting the raw material obtained in step S2 through multiple steaming-drying processes into shreds to obtain polygonatum sibiricum shreds.

[0025] S4, mixing the polygonatum sibiricum silk obtained in step S3 with other biological antioxidant raw materials, and repeating the steaming-drying process at least once, preferably twice or more, so that the effective antioxidant components from other biological antioxidant raw materials can penetrate into the surface or interior of the polygonatum sibiricum silk.

[0026] S5, separating the dried mixed raw materials, that is, separating the polygonatum sibiricum silk from other biological antioxidant raw materials to obtain polygonatum sibiricum silk tea that does not contain other biological antioxidant raw materials except the polygonatum sibiricum silk.

[0027] The water content of the polygonatum silk tea obtained through the above steps is lower than 10wt%, and effective antioxidant components from other biological antioxidant raw materials permeate the surface or the interior.

[0028] Here, the other biological antioxidant raw materials are one or more of green tea, wolfberry, vanilla, and berries. When the Polygonatum sibiricum silk is mixed with other biological antioxidant raw materials and steamed together, the weight ratio of the Polygonatum sibiricum silk to the other biological antioxidant raw materials is 1:(0.1~5) based on the state of the initial mixing.

[0029] The present invention preferably mixes the Polygonatum sibiricum silk with other biological antioxidant raw materials and steams them together for more than 2 times, and the steaming-drying process of the Polygonatum sibiricum raw materials and the steaming-drying process of the Polygonatum sibiricum silk are processed a total of 6-10 times, for example 9 times. When the total number is 9 times, the traditional process idea of ​​"nine steaming and nine drying" is met.

[0030] Of course, under the current high-level process control conditions, the steaming and drying steps of the entire process do not have to be restricted to the 9 steps in the traditional "nine steaming and nine drying" process.

[0031] Example 1

[0032] A preparation process of polygonatum sibiricum tea capable of resisting oxidation comprises the following steps:

[0033] S1, select fresh Polygonatum sibiricum harvested in autumn as raw material, the washed Polygonatum sibiricum raw material is sent to the visual screening conveyor line, on the visual screening conveyor line, the defective raw material is automatically removed, the normal raw material is sent to the steamer for the first steaming, and the raw material after the first steaming is sent to the drying oven for the first drying.

[0034] S2, the raw materials after the first steaming-drying in step S1 are sent into the steamer and oven again to repeat the steaming-drying process for 5 times.

[0035] S3, cutting the raw material obtained in step S2 through the 6-pass steaming-drying process into shreds to obtain polygonatum sibiricum shreds.

[0036] S4, mixing the polygonatum sibiricum filaments obtained in step S3 with fresh green tea, with the mixing ratio being 1:0.28 based on the initial mixing state, so that the polygonatum sibiricum filaments are wrapped by the fresh green tea, and then repeating the steaming-drying process for 3 times, so that the effective antioxidant components from the green tea can penetrate into the surface or the interior of the polygonatum sibiricum filaments.

[0037] S5, separating the dried mixed raw materials, i.e. separating the polygonatum sibiricum silk from the green tea, to obtain polygonatum sibiricum silk tea which does not contain other biological antioxidant raw materials other than the polygonatum sibiricum silk, and has a moisture content of less than 10wt%, and has effective antioxidant components from the green tea permeated on the surface or inside.

[0038] Example 2

[0039] A preparation process of polygonatum sibiricum tea capable of resisting oxidation comprises the following steps:

[0040] S1, select fresh Polygonatum sibiricum harvested in autumn as raw material, the washed Polygonatum sibiricum raw material is sent to the visual screening conveyor line, on the visual screening conveyor line, the defective raw material is automatically removed, the normal raw material is sent to the steamer for the first steaming, and the raw material after the first steaming is sent to the drying oven for the first drying.

[0041] S2, the raw materials after the first steaming-drying in step S1 are sent into the steamer and oven again to repeat the steaming-drying process for 5 times.

[0042] S3, cutting the raw material obtained in step S2 through the 6-pass steaming-drying process into shreds to obtain polygonatum sibiricum shreds.

[0043] S4, mixing the polygonatum sibiricum shreds obtained in step S3 with fresh wolfberry fruits, with the mixing ratio being 1:0.5 based on the initial mixing state, so that the polygonatum sibiricum shreds are dispersed in the fresh wolfberry fruits, and then repeating the steaming-drying process for 3 times, so that the effective antioxidant ingredients from wolfberry can penetrate into the surface or interior of the polygonatum sibiricum shreds.

[0044] S5, separating the dried mixed raw materials, i.e. separating the polygonatum sibiricum silk from wolfberry, to obtain polygonatum sibiricum silk tea which does not contain other biological antioxidant raw materials except the polygonatum sibiricum silk, and has a moisture content lower than 10wt%, and has effective antioxidant components from wolfberry permeated on the surface or inside.

[0045] Example 3

[0046] A preparation process of polygonatum sibiricum tea capable of resisting oxidation comprises the following steps:

[0047] S1, select fresh Polygonatum sibiricum harvested in autumn as raw material, the washed Polygonatum sibiricum raw material is sent to the visual screening conveyor line, on the visual screening conveyor line, the defective raw material is automatically removed, the normal raw material is sent to the steamer for the first steaming, and the raw material after the first steaming is sent to the drying oven for the first drying.

[0048] S2, the raw materials after the first steaming-drying in step S1 are sent into the steamer and oven again to repeat the steaming-drying process for 5 times.

[0049] S3, cutting the raw material obtained in step S2 through the 6-pass steaming-drying process into shreds to obtain polygonatum sibiricum shreds.

[0050] S4, mixing the polygonatum sibiricum filaments obtained in step S3 with vanilla leaves, with a mixing ratio of 1:0.8 based on the initial mixing state, so that the polygonatum sibiricum filaments are wrapped by the vanilla leaves, and then repeating the steaming-drying process for 3 times, so that the effective antioxidant ingredients from the vanilla can penetrate into the surface or inside of the polygonatum sibiricum filaments.

[0051] S5, separating the dried mixed raw materials, i.e. separating the polygonatum sibiricum silk from the vanilla, to obtain the polygonatum sibiricum silk tea which does not contain other biological antioxidant raw materials except the polygonatum sibiricum silk, and has a moisture content lower than 10wt%, and has effective antioxidant components from the vanilla permeated on the surface or inside.

[0052] Comparative Example 1

[0053] The preparation process of polygonatum silk tea comprises the following steps:

[0054] S1, select fresh Polygonatum sibiricum harvested in autumn as raw material, the washed Polygonatum sibiricum raw material is sent to the visual screening conveyor line, on the visual screening conveyor line, the defective raw material is automatically removed, the normal raw material is sent to the steamer for the first steaming, and the raw material after the first steaming is sent to the drying oven for the first drying.

[0055] S2, the raw materials after the first steaming-drying in step S1 are sent into the steamer and oven again to repeat the steaming-drying process for 5 times.

[0056] S3, cutting the raw material obtained in step S2 through the 6-pass steaming-drying process into shreds to obtain polygonatum sibiricum shreds.

[0057] S4, repeating the steaming-drying process for three times on the polygonatum sibiricum silk obtained in step S3 to obtain polygonatum sibiricum silk tea with the polygonatum sibiricum silk as raw material, wherein the moisture content of the tea is less than 10wt%.

[0058] The raw materials of polygonatum used in the preparation process of polygonatum silk tea in the above embodiment 1 and comparative example 1 are all fresh polygonatum fruits produced in Daiyue District in the same year and season (autumn), and the steaming-drying process is determined by the 9 steps in the "nine steaming and nine drying" process, and the steaming and drying process parameters corresponding to each step in embodiment 1 and comparative example 1 are the same, the steaming time before shredding is in the range of 80-120min, the steaming time after shredding is in the range of 40-55min, and the drying time is based on reaching the set moisture content (less than 10%).

[0059] Before the effect verification, the brewing process conditions of Polygonatum sibiricum tea were unified and selected as follows: tea-water ratio 1:10g / mL; time 7min; temperature 100℃.

[0060] The above brewing process conditions are the most suitable brewing process conditions for Polygonatum sibiricum tea selected through experiments based on the antioxidant index and sugar control index of Polygonatum sibiricum tea. The polysaccharide content under these conditions is greater than 7.8%.

[0061] Under the above brewing process conditions, the antioxidant indexes of the Polygonatum odoratum silk tea obtained in Example 1 and Comparative Example 1 were tested, and the average values ​​of multiple production verifications were statistically analyzed. The results are as follows:

[0062] project DPPH free radical scavenging rate ABTS+ free radical scavenging rate Hydroxyl radical scavenging rate Example 1 86.4％ 35.2％ 94.7％ Comparative Example 1 83.2％ 31.1％ 92.0％

[0063] It can be seen that the DPPH free radical scavenging rate, ABTS+ free radical scavenging rate and hydroxyl free radical scavenging rate of the polygonatum sibiricum tea prepared by the present invention are effectively improved after brewing.

[0064] It should be noted that in the steaming-drying process of steps S1 and S2 of the embodiment of the present invention, qualified polygonatum raw materials can be processed by the steaming-drying process together, or the polygonatum raw materials can be sorted into multiple grades according to volume specifications on a visual screening conveyor line, and then the average weight information of normal raw materials of each grade is accurately collected, and the processing technology and process parameters that are most suitable for each grade of normal raw materials are matched according to the average weight information, especially the steaming time, and the normal raw materials of each grade are processed by the steaming-drying process separately, and finally in step S3, they are shredded together and produced in parallel, and the average weight information is collected in a way that the normal raw materials sorted and diverted into multiple grades are counted by a counter and then sent into a weighing container, and the system derives the average weight information of each grade of normal raw materials according to the quantity information obtained by the counter and the weight information obtained by the weighing container, and matches the processing technology and process parameters of each grade of normal raw materials according to the average weight information. The advantage of adopting the latter scheme is that under the same brewing conditions, the comprehensive indicators of the antioxidant and blood sugar regulation of the Polygonatum sibiricum tea soup can be within a relatively high detection value range and the performance is stable. Similarly, according to the production verification data of the fresh green tea component introduced in Example 1, under the conditions of simultaneously satisfying the DPPH free radical scavenging rate ≥86%, the ABTS+ free radical scavenging rate ≥35%, and the hydroxyl free radical scavenging rate ≥94%, the random detection value of the α-glucosidase activity inhibition rate can also be basically stabilized at a level above 70% (the sample satisfaction rate of ≥70% exceeds 98%), and other effects are not repeated here.

[0065] In summary, the present invention prepares polygonatum shreds by first subjecting the polygonatum raw material to multiple steaming-drying processes and then cutting the resulting polygonatum shreds; then, in the subsequent steaming-drying process of the polygonatum shreds, the polygonatum shreds are mixed with other biological antioxidant raw materials and steamed together, so that the effective antioxidant components from the other biological antioxidant raw materials can penetrate into the surface or interior of the polygonatum shreds; after completing the entire process flow, the polygonatum shreds are separated from the other biological antioxidant raw materials to obtain polygonatum shreds tea that does not contain other biological antioxidant raw materials other than the polygonatum shreds; and the antioxidant performance indicators of the polygonatum shreds tea are improved without adding other raw materials into the polygonatum shreds tea raw materials.

[0066] The above are only preferred implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the claims.

Claims

1. An antioxidant polygonatum sibiricum tea, which is made by cutting polygonatum sibiricum into strips after processing polygonatum sibiricum raw materials through multiple steaming-drying processes, and is characterized in that: The water content of the polygonatum sibiricum silk is lower than 10wt%, and effective antioxidant components from other biological antioxidant raw materials are infiltrated on the surface or inside.

2. The antioxidant Polygonatum odoratum silk tea according to claim 1, characterized in that: The polygonatum sibiricum tea does not contain any biological antioxidant raw materials other than the polygonatum sibiricum silk.

3. The antioxidant Polygonatum odoratum silk tea according to claim 2, characterized in that: After the polygonatum sibiricum tea is brewed, the DPPH free radical scavenging rate of the tea soup is ≥84%, the ABTS+ free radical scavenging rate is ≥32%, and the hydroxyl free radical scavenging rate is >92%.

4. The antioxidant Polygonatum odoratum silk tea according to claim 3, characterized in that: After the polygonatum sibiricum tea is brewed, the DPPH free radical scavenging rate of the tea soup is ≥86%, the ABTS+ free radical scavenging rate is ≥35%, and the hydroxyl free radical scavenging rate is ≥94%.

5. The antioxidant Polygonatum odoratum silk tea according to any one of claims 1 to 4, characterized in that: The effective antioxidant components permeated on the surface or inside of the polygonatum sibiricum silk come from biological antioxidant raw materials such as green tea, wolfberry, vanilla, berries, etc.

6. A preparation process of an antioxidant Polygonatum sibiricum tea, characterized in that: The method comprises the following steps: preparing polygonatum sibiricum raw materials through multiple steaming-drying processes and then cutting the raw materials into polygonatum sibiricum shreds, and further preparing the polygonatum sibiricum shreds through one or more steaming-drying processes. During the one or more steaming-drying processes of the polygonatum sibiricum shreds, the polygonatum sibiricum shreds are mixed with other biological antioxidant raw materials and steamed together, so that effective antioxidant components from other biological antioxidant raw materials can penetrate into the surface or the inside of the polygonatum sibiricum shreds. After the whole process flow is completed, the polygonatum sibiricum shreds are separated from the other biological antioxidant raw materials to obtain polygonatum sibiricum shreds tea which does not contain other biological antioxidant raw materials except the polygonatum sibiricum shreds and has a moisture content of less than 10wt%.

7. The process for preparing the antioxidant Polygonatum odoratum silk tea according to claim 6, characterized in that: The other biological antioxidant raw materials are one or more of green tea, wolfberry, vanilla and berry.

8. The process for preparing the antioxidant Polygonatum odoratum silk tea according to claim 6, characterized in that: When the polygonatum sibiricum silk is mixed with other biological antioxidant raw materials and steamed together, the weight ratio of the polygonatum sibiricum silk to the other biological antioxidant raw materials is 1:(0.1-5) based on the state of the initial mixing.

9. The process for preparing the antioxidant Polygonatum odoratum silk tea according to claim 6, characterized in that: The number of times of mixing the polygonatum sibiricum silk with other biological antioxidant raw materials and steaming them together is more than 2 times.

10. The process for preparing the antioxidant Polygonatum odoratum silk tea according to claim 6, characterized in that: The steaming-drying process of the raw materials of Polygonatum sibiricum and the steaming-drying process of the Polygonatum sibiricum silk are processed for a total of 6 to 10 times.

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