CN114149390B - Vitamin C extraction method - Google Patents
Vitamin C extraction method Download PDFInfo
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- CN114149390B CN114149390B CN202111528350.1A CN202111528350A CN114149390B CN 114149390 B CN114149390 B CN 114149390B CN 202111528350 A CN202111528350 A CN 202111528350A CN 114149390 B CN114149390 B CN 114149390B
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- debitterizing
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- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 title claims abstract description 108
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229930003268 Vitamin C Natural products 0.000 title claims abstract description 54
- 235000019154 vitamin C Nutrition 0.000 title claims abstract description 54
- 239000011718 vitamin C Substances 0.000 title claims abstract description 54
- 238000000605 extraction Methods 0.000 title description 5
- 239000000243 solution Substances 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000003223 protective agent Substances 0.000 claims abstract description 16
- 239000000706 filtrate Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- 238000004108 freeze drying Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 240000000560 Citrus x paradisi Species 0.000 claims abstract 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- HDTRYLNUVZCQOY-UHFFFAOYSA-N α-D-glucopyranosyl-α-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OC1C(O)C(O)C(O)C(CO)O1 HDTRYLNUVZCQOY-UHFFFAOYSA-N 0.000 claims description 9
- HDTRYLNUVZCQOY-WSWWMNSNSA-N Trehalose Natural products O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-WSWWMNSNSA-N 0.000 claims description 9
- HDTRYLNUVZCQOY-LIZSDCNHSA-N alpha,alpha-trehalose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 HDTRYLNUVZCQOY-LIZSDCNHSA-N 0.000 claims description 9
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 claims description 9
- 235000018417 cysteine Nutrition 0.000 claims description 9
- 229920000858 Cyclodextrin Polymers 0.000 claims description 8
- 239000001116 FEMA 4028 Substances 0.000 claims description 7
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 7
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 7
- 229960004853 betadex Drugs 0.000 claims description 7
- 235000006408 oxalic acid Nutrition 0.000 claims description 6
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 2
- 229930003231 vitamin Natural products 0.000 abstract description 4
- 235000013343 vitamin Nutrition 0.000 abstract description 4
- 239000011782 vitamin Substances 0.000 abstract description 4
- 229940088594 vitamin Drugs 0.000 abstract description 4
- 150000003722 vitamin derivatives Chemical class 0.000 abstract description 4
- 241000196324 Embryophyta Species 0.000 abstract description 3
- 244000276331 Citrus maxima Species 0.000 description 25
- 230000000694 effects Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 238000009777 vacuum freeze-drying Methods 0.000 description 3
- 235000001759 Citrus maxima Nutrition 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006864 oxidative decomposition reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000005976 Citrus sinensis Nutrition 0.000 description 1
- 240000002319 Citrus sinensis Species 0.000 description 1
- AUNGANRZJHBGPY-UHFFFAOYSA-N D-Lyxoflavin Natural products OCC(O)C(O)C(O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-UHFFFAOYSA-N 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- AUNGANRZJHBGPY-SCRDCRAPSA-N Riboflavin Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)CN1C=2C=C(C)C(C)=CC=2N=C2C1=NC(=O)NC2=O AUNGANRZJHBGPY-SCRDCRAPSA-N 0.000 description 1
- 229930003451 Vitamin B1 Natural products 0.000 description 1
- 229930003471 Vitamin B2 Natural products 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229960002477 riboflavin Drugs 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229960003495 thiamine Drugs 0.000 description 1
- DPJRMOMPQZCRJU-UHFFFAOYSA-M thiamine hydrochloride Chemical compound Cl.[Cl-].CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N DPJRMOMPQZCRJU-UHFFFAOYSA-M 0.000 description 1
- 235000010374 vitamin B1 Nutrition 0.000 description 1
- 239000011691 vitamin B1 Substances 0.000 description 1
- 235000019164 vitamin B2 Nutrition 0.000 description 1
- 239000011716 vitamin B2 Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/62—Three oxygen atoms, e.g. ascorbic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Medicines Containing Plant Substances (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The application discloses a method for extracting vitamin C, which comprises the following steps: putting Jin Youpi materials into a debitterizing solution for debitterizing treatment to obtain a debitterized treatment solution after debitterizing treatment, wherein the debitterizing solution is an aqueous solution containing a debitterizing protective agent; adding vitamin C extract into the debitterized treatment liquid, stirring, filtering and separating to obtain filtrate; concentrating and freeze-drying the filtrate to obtain vitamin C. The application realizes a method for extracting vitamin from natural plants such as golden pomelo, and expands the acquisition source of vitamin C.
Description
Technical Field
The application relates to the technical field of extraction and separation of natural products of foods, in particular to a method for extracting vitamin C.
Background
Vitamin C is a water-soluble active substance, has various functions of nutrition, medical treatment, health care and the like, and plays an important role in maintaining normal physiological functions and health of human bodies. However, vitamin C cannot be synthesized and stored in the human body and must be taken from the outside.
On the other hand, the golden pomelo is a special fruit in the south of the Ling, the appearance of the fruit is golden, the fruit is big, the juice is sweet and has rich nutrition and medicinal value, and the golden pomelo is popular. The plum state is the country of the golden shaddock in China, the planting area of the plum state county in 2020 is up to 25.5 mu, and the yield is about 55.6 mu ton. Laboratory analysis by the department of academy of agricultural science, guangdong province: the golden pomelo juice contains 14% of soluble solids, 16% of soluble solids, 12.68% of total sugar and 0.368% of organic acid, and each 100 ml of juice contains 104.6 mg of vitamin C, which is 2 times higher than that of sweet orange and 4 times higher than that of orange.
The golden pomelo has rich vitamin types, such as vitamin C, vitamin B1, vitamin B2 and the like, and plays an important auxiliary role in regulating the metabolism of human bodies. The golden pomelo has the most abundant vitamin C content, and the vitamin C content in every 100g pulp is about 60mg, and the effect is particularly remarkable in protecting the liver, so that the golden pomelo is a good external intake source of the vitamin C.
Disclosure of Invention
According to the present application, there is provided a method for extracting vitamin C, comprising: putting Jin Youpi materials into a debitterizing solution for debitterizing treatment to obtain a debitterized treatment solution after debitterizing treatment, wherein the debitterizing solution is an aqueous solution containing a debitterizing protective agent; adding vitamin C extract into the debitterized treatment liquid, stirring, filtering and separating to obtain filtrate; concentrating and freeze-drying the filtrate to obtain vitamin C.
In an embodiment of the present application, the Jin Youpi material is a golden pomelo peel diced product obtained by dicing a clean Jin Youpi obtained by cleaning fresh golden pomelo and peeling the clean golden pomelo with a peeling machine. In one embodiment of the application, the Jin Youpi blocks weigh 1 gram per each. Can be used by those skilled in the art
In one embodiment of the application, both the concentration and freeze-drying of the filtrate are performed in vacuo.
In one embodiment, the vitamin C extracting solution is an aqueous solution of oxalic acid or metaphosphoric acid with the mass percentage of 1% -5%, and the mass percentage of the vitamin C extracting solution and the debitterizing treatment solution is 0.5% -5%.
In one embodiment, the stirring after adding the vitamin C extract to the debitterized solution is performed at a low temperature of 4-10deg.C.
In an embodiment, the water in the debittering solution is hot water at 65-80 ℃, and the mass percentage of the debittering protective agent to the water is 1:99.
in one embodiment, the debitterizing treatment comprises: placing the Jin Youpi material into a vacuum stirring pot, adding the debitterizing liquid, soaking and stirring for 30-60 minutes, wherein the weight of the hot water is 2-5 times of that of the Jin Youpi material.
In one embodiment, the debittering protection agent comprises 10-30% of beta-cyclodextrin; 20-45% of citric acid; 15-35% of trehalose; cysteine 10-35%.
The application realizes a method for extracting vitamin from natural plants such as golden pomelo, and expands the acquisition source of vitamin C.
Drawings
In order to make the technical problems solved by the present application, the technical means adopted and the technical effects achieved more clear, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted, however, that the drawings described below are merely illustrative of exemplary embodiments of the present application and that other embodiments of the drawings may be derived from these drawings by those skilled in the art without undue effort.
FIG. 1 is a generalized flow chart of a method of an embodiment of the present application.
Fig. 2 is a specific flow chart of a method of an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown, although the exemplary embodiments may be practiced in various specific ways. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art. The structures, capabilities, effects, or other features described in a particular embodiment may be incorporated in one or more other embodiments in any suitable manner without departing from the spirit of the present application.
In describing particular embodiments, specific details of construction, performance, effects, or other features are set forth in order to provide a thorough understanding of the embodiments by those skilled in the art. It is not excluded, however, that one skilled in the art may implement the present application in a particular situation in a solution that does not include the structures, properties, effects, or other characteristics described above.
The flow diagrams in the figures are merely exemplary flow illustrations and do not represent that all of the elements, operations, and steps in the flow diagrams must be included in the aspects of the present application, nor that the steps must be performed in the order shown in the figures. For example, some operations/steps in the flowcharts may be decomposed, some operations/steps may be combined or partially combined, etc., and the order of execution shown in the flowcharts may be changed according to actual situations without departing from the gist of the present application.
As described above, the golden pomelo is rich in vitamin C, and the golden pomelo puree has a certain anti-inflammatory effect, and can play a good role on human body, so that the golden pomelo is a good external extraction source of vitamin C. Referring to fig. 1, the embodiment of the application discloses a method for extracting vitamin C, in particular to a method for extracting vitamin C from golden pomelo, which comprises the following steps: s11) putting Jin Youpi materials into a debitterizing solution for debitterizing treatment to obtain a debitterized treatment solution after debitterizing treatment, wherein the debitterizing solution is an aqueous solution containing a debitterizing protective agent, and the debitterizing protective agent can comprise 10-30% of beta-cyclodextrin, 20-45% of citric acid, 15-35% of trehalose and 10-35% of cysteine; s12) adding vitamin C extract into the debitterized treatment liquid, stirring, filtering and separating to obtain filtrate; s13) concentrating and freeze-drying the filtrate to obtain the vitamin C.
Referring to fig. 2, the method for extracting vitamin C according to the embodiment of the present application is mainly implemented through the steps of washing golden pomelo, peeling golden pomelo, dicing, debitterizing, extracting vitamin C, drying, and the like, and specifically includes:
(S21) raw material treatment selection: and (5) cleaning the fresh golden pomelo, and peeling the fresh golden pomelo by using a peeling machine to obtain clean golden pomelo peel.
(S22) dicing: the resulting Jin Youpi is fed to a dicer and processed to yield, for example, pieces of golden shaddock ped having a weight of 1 gram per piece. For obtaining more vitamin C, the method for cutting the golden pomelo peel can also comprise crushing, squeezing and the like, and the method for breaking the fiber tissue of the golden pomelo peel and dissolving out the vitamin C can also be included.
(S23) debitterizing treatment: jin Youpi the blocks are sent into a vacuum stirring pot by a lifter, and the debitterizing liquid is added for stirring debitterizing treatment under the vacuum environment. Specifically, the golden pomelo Pi Dingfang is soaked in hot water of 65-80deg.C (in this range, jin Youpi butyl can be softened and cell gaps can be opened) for 30-60min, stirring at 500-800rpm and pressure of 200-500KPa, and the liquid turns into dark yellow. The weight of hot water is 2-5 times of that of Jin Youpi blocks, a debittering protective agent with the mass percentage content of 1% is also added into the hot water, and the debittering protective agent can contain 10-30% of beta-cyclodextrin; 20-45% of citric acid; 15-35%; cysteine 10-35%. The cyclodextrin is of a hollow cylindrical structure, can embed vitamin trehalose C molecules, plays a role in stabilizing and slowly releasing, improving solubility and increasing stability of vitamin C to light, heat and oxygen. Vitamin C is easy to decompose and color in a system in which metal ions exist, after trehalose is added, the metal ions are combined with the trehalose, and the metal ions serving as catalysts for the oxidative decomposition reaction of the vitamin C are reduced, so that the oxidative decomposition reaction of the vitamin C can be reduced. In an acidic environment, cysteine is stable relative to vitamin C, and the vitamin C can be combined with amino and carboxyl of the cysteine, so that the stability and dissolution rate of the vitamin C are improved.
(S24) vitamin C extraction: putting the processing solution subjected to the debitterizing treatment of Jin Youpi blocks into a centrifugal machine for dehydration treatment, collecting filtrate, adding 0.5-5% of vitamin C extracting solution (for example, 1-5% of oxalic acid or metaphosphoric acid aqueous solution), stirring for 1-5h at low temperature (4-10 ℃), observing that the liquid turns to light yellow, filtering to separate slag, and collecting filtrate. The addition of oxalic acid or metaphosphoric acid prevents oxidation of vitamin C by oxygen in the air, especially faster under alkaline conditions, and more stable in acidic media at a slower rate by air oxidation.
(S25) drying: concentrating the filtrate under vacuum, and lyophilizing under vacuum to obtain vitamin C in natural plant (fructus Citri Grandis).
Example 1:
5kg of Jin Youpi blocks are weighed, added into a vacuum stirring pot containing 15kg of hot water with the temperature of 75 ℃, 150g of debitterizing protective agent is added, the debitterizing protective agent comprises 10% of beta-cyclodextrin, 25% of citric acid, 30% of trehalose and 35% of cysteine, and debitterizing treatment is carried out for 30min. Adding 100g of vitamin C extract (1% oxalic acid) into the debitterized solution, stirring at low temperature for 2h, vacuum concentrating, and vacuum freeze drying to obtain 1.51kg of natural vitamin C product with purity of 47.1%.
Example 2:
10kg of Jin Youpi blocks are weighed, added into a vacuum stirring pot containing 20kg of hot water at 75 ℃, 200g of debitterizing protective agent is added, the debitterizing protective agent comprises 20% of beta-cyclodextrin, 30% of citric acid, 20% of trehalose and 30% of cysteine, and debitterizing treatment is carried out for 60min. Adding 1500g of vitamin C extract (5% oxalic acid) into the debitterized solution, stirring at low temperature for 2h, vacuum concentrating, and vacuum freeze drying to obtain natural vitamin C product of fructus Citri Grandis 3.52kg with purity of 50.8%.
Example 3:
8kg of Jin Youpi blocks are weighed, added into a vacuum stirring pot containing 40kg of hot water at 75 ℃, 400g of debitterizing protective agent is added, the debitterizing protective agent comprises 10% of beta-cyclodextrin, 30% of citric acid, 30% of trehalose and 30% of cysteine, and debitterizing treatment is carried out for 60min. 1440g of vitamin C extract (5% aqueous solution of metaphosphoric acid) is added into the debitterized liquid, stirring is carried out for 5h at low temperature, vacuum concentration and vacuum freeze drying are carried out, thus obtaining 2.56kg of natural vitamin C product of golden pomelo with purity of 48.7%.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will recognize that the embodiments described in the specification are all of the preferred embodiments, and that the actions and devices involved are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (4)
1. A method for extracting vitamin C, comprising:
putting Jin Youpi materials into debitterizing liquid for debitterizing treatment, wherein the debitterizing treatment comprises the following steps:
placing the Jin Youpi material into a vacuum stirring pot, adding the debitterizing solution, soaking and stirring for 30-60 minutes, wherein the weight of the hot water is 2-5 times of that of the Jin Youpi material, and a debitterized treatment solution is obtained after debitterizing treatment, and the debitterized solution is an aqueous solution containing a debitterizing protective agent; the debitterizing protective agent contains 10-30% of beta-cyclodextrin; 20-45% of citric acid; 15-35% of trehalose; cysteine 10-35%;
adding vitamin C extract into the debitterizing treatment liquid, stirring, filtering and separating to obtain filtrate;
concentrating and freeze-drying the filtrate to obtain vitamin C;
the vitamin C extracting solution is an aqueous solution of oxalic acid or metaphosphoric acid with the mass percentage of 1-5%, the mass percentage of the vitamin C extracting solution and the debitterizing treatment solution is 0.5-5%, and the stirring after the vitamin C extracting solution is added into the debitterizing treatment solution is carried out at the low temperature of 4-10 ℃;
the water in the debitterizing solution is hot water at 65-80 ℃, and the weight percentage of the debitterizing protective agent and the water is 1:99.
2. the method of claim 1, wherein said Jin Youpi material is cleaned from fresh grapefruit to obtain clean grapefruit, said clean grapefruit is peeled to obtain clean Jin Youpi using a peeler, and said clean Jin Youpi is diced by a dicer to obtain Jin Youpi dices.
3. The method of claim 2, wherein the Jin Youpi pieces weigh 1 gram/each.
4. The method of claim 1, wherein both the concentrating and freeze-drying of the filtrate are performed in vacuo.
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| CN114149390B true CN114149390B (en) | 2023-10-27 |
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| CN104171774A (en) * | 2014-06-30 | 2014-12-03 | 谢婧 | Enzymolysis flavored golden pomelo paste and production method thereof |
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