CN115413784A - Production process of active plant enzyme - Google Patents
Production process of active plant enzyme Download PDFInfo
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- CN115413784A CN115413784A CN202211027468.0A CN202211027468A CN115413784A CN 115413784 A CN115413784 A CN 115413784A CN 202211027468 A CN202211027468 A CN 202211027468A CN 115413784 A CN115413784 A CN 115413784A
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- lactobacillus
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- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
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Abstract
The invention relates to a production process of an active plant enzyme, belonging to the technical field of biological fermentation, and comprising the following steps: cleaning fresh plant materials with sterile water, breaking cell wall, and mixing; preserving pericarpium Granati to extract pericarpium Granati polyphenol, and pretreating peeled vegetable and fruit with pectinase; activating the mixed strains by using a 5% sucrose solution; and adding pomegranate peel polyphenol and the plant raw materials subjected to wall breaking for co-fermentation and chelation, and preparing an active plant enzyme stock solution after 365 days. The production process greatly retains amino acids, proteins, vitamins, bioactive substances and functions of vegetables, fruits and Chinese herbal medicines, and lactobacillus activity is as high as 6.8 × 10 8 CFU/mL, the prepared active plant enzyme has the effects of resisting oxidation, preventing aging, enhancing resistance, conditioning intestinal flora, dispelling the effects of alcohol, protecting liver and the like, is sour, sweet and delicious, can be taken for a long time, and has very high application value in the fields of health and food and cosmetic industries.
Description
Technical Field
The invention belongs to the technical field of biological fermentation, and particularly relates to a production process of an active plant enzyme.
Background
The active plant enzyme is a product of fruits, vegetables, mushrooms or Chinese herbal medicines which is produced by fermenting various bacteria such as lactic acid bacteria, saccharomycetes and the like, comprises enzyme, enzyme-producing microorganisms and metabolites thereof, and contains polyphenol, flavonoid compounds, amino acids, organic acids, probiotics, prebiotics and other components, and has rich nutritional value and good functional characteristics. The plant enzyme contains various abundant hydrolytic enzymes such as protease, lipase, amylase, cellulase and the like, and functional enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione peroxidase (GSH-Px) and the like, can degrade macromolecular substances, and has multiple physiological functions of improving immunity, resisting oxidation, conditioning intestines and stomach, improving digestion and absorption, dispelling the effects of alcohol, protecting the liver, participating in various metabolic processes of a human body and the like. As people age, use medicines and bad life style cause enzyme deficiency in the body, thereby generating various chronic diseases, the exogenous active enzyme and probiotics are supplemented as the first choice for preventing and conditioning diseases. The ferment is the aggregate of active enzyme and probiotics, plays an important role in the aspects of improving the sub-health of human bodies, enhancing resistance and the like, and has wide application prospect.
Each step of the fermentation process is very important for the production of active plant enzymes, and because the production processes and strains used correspondingly for different raw materials are different, the types, the amounts, the culture conditions and the fermentation conditions of various raw materials, formulas and additives are also different, and some enzymes are sterilized before canning, so that the activities of probiotics and enzymes are completely lost, and the quality of the plant enzymes is uneven. At present, common ferment products on the market hardly contain active probiotics, have limited functions, and some ferment manufacturers cover shadows for the ferment industry in order to promote the ferment to regulate the intestinal function and even artificially add cathartics such as anthrones and the like. Therefore, how to produce active plant enzymes has a great space for improvement.
Disclosure of Invention
The invention aims to provide a production process of an active plant enzyme, which comprises the steps of carrying out activation culture on mixed strains by using a 5-10% sucrose solution, and then adding vegetable juice and pomegranate peel polyphenol for carrying out co-fermentation to prepare the active plant enzyme.
The invention mainly solves the problems of low content of active probiotics, lack of SOD enzyme in active plant enzyme products, poor storage stability and product safety control in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a production process of active plant enzyme comprises the following steps:
(1) The raw materials are dunaliella salina, citrus, red dates, pineapples, apples, pears, medlar, yams, ginseng, mulberries, tea leaves, ginger and pomegranates, and the raw materials are mixed according to the weight part ratio, and the formula is specifically as follows: 10-15 parts of dunaliella salina, 10-13 parts of citrus, 20-25 parts of red dates, 10-15 parts of pineapples, 12-17 parts of apples, 15-20 parts of pears, 5-10 parts of medlar, 5-10 parts of Chinese yams, 5-8 parts of ginseng, 5-10 parts of mulberries, 5-10 parts of tea leaves, 5-8 parts of ginger and 15-20 parts of pomegranates.
(2) Peeling plant raw materials, breaking cell walls, and performing pretreatment by using pectinase; preserving pericarpium Granati to extract pericarpium Granati polyphenol;
fresh plant raw materials are taken according to the weight part ratio, washed by sterile water and peeled, and pomegranate peel is dried and stored; breaking cell wall of other materials, mixing, adding 20-40mg/L pectinase, adding sterilized deionized water, pasteurizing at 5min/80 deg.C, and cooling to room temperature.
Wherein, the pectinase acts on the glycosidic bond between the D-galacturonic acid residues in the pectin, so that pectin molecules can be broken, the pectin in pulp tissues can be softened, the high molecular galacturonic acid degrades galacturonic acid and pectic acid micromolecular substances, the yield of fruit juice is increased, the yield of acid and sugar in plant juice is increased, and the taste and flavor are improved;
further, after the pomegranate rind is dried in the sun, the dry pomegranate rind is ground into fine powder by a multi-mill, phenols in the pomegranate rind powder are extracted by methanol, after 24 hours of reaction, the mixture is centrifuged to obtain supernatant, and the extract is freeze-dried by a rotary evaporator to obtain the pomegranate rind polyphenol.
(3) Activating and culturing the mixed strains for 24 hours by using a 5-10% sucrose solution to obtain a high-concentration active lactobacillus solution;
and co-fermenting and chelating the sterilized plant juice and the pomegranate peel polyphenol.
Uniformly mixing plant juice and pomegranate peel polyphenol, adding an activated active lactobacillus solution, and mixing the plant juice and the pomegranate peel polyphenol according to a volume ratio of 1:1, fermenting in a fermentation tank, adjusting the pH value of a substrate to 4-5, and naturally fermenting at room temperature for 365 days.
In the fermentation process, the strain can be subjected to activity reduction and even activity loss due to the changes of pH value, temperature, pressure and external environment, fermentation maintenance is required to be continuously carried out for keeping the activity of the lactobacillus, the detection is carried out once a month, the pH value, the sugar degree, the activity of the lactobacillus and the like are detected, and if the deviation exceeds 15%, the fermentation is recovered until the fermentation is finished.
Wherein, the mixed lactobacillus can generate some phenol esterase in the fermentation process, hydrolyze some bound phenol in fruits and plants and release free phenol, and the phenol generates a stable intermediate after electron transfer, thereby effectively preventing oxidation of cells and physiological levels, improving antioxidant activity and obviously improving the capacity of scavenging free radicals.
Further, at the end of fermentation, whether the fermentation is mature or not is checked through color, luster, taste and fragrance, and the mature fermentation liquid is yellow to light brown, has special strong fermentation fragrance, tastes sour and sweet and tastes sweet.
Further filtering to remove residue, blending, homogenizing, and bottling to obtain active plant ferment stock solution
Or, (3) the delignified wheat bran is used for modifying the mixed strain, and the selenium-rich culture medium is used for culturing the modified mixed strain;
the mixture containing the two different lactobacillus hyphae and the culture substrate components was centrifuged in a test tube for 15 minutes. The supernatant was discarded and the particles were washed with distilled water and centrifuged again as described above. Until the biomass was dried to constant weight at 90 ℃, dry mixed lactobacillus powder was obtained.
Furthermore, lignin in the wheat bran is removed, gaps are enlarged, and the combination efficiency of the wheat bran and the compound bacteria is improved;
boiling wheat bran in 1% NaOH solution to remove lignin, autoclaving delignified wheat bran at 120 deg.C under 1-1.5atm for 15min, mixing 3-7g delignified wheat bran with 0.8-1.2g mixed lactobacillus powder in 500mL MRS broth, and culturing at 37 deg.C for 48h. The mixed seed culture modified by delignified wheat bran is obtained after subsequent washing with sterile 1/4 strength ringer's solution to remove free bacteria.
Furthermore, MRS broth culture medium is used to prepare selenium-rich culture medium, and 2% of glucose, 3% of beef powder, namely yeast powder (1:2), 0.6% of dipotassium phosphate, 0.01% of magnesium sulfate, 0.004% of manganese sulfate monohydrate, 0.1% of tween-80 and 3-5 μ g/mL of sodium selenite are added into the culture medium. Inoculating the mixed strain into selenium-rich culture medium, adding sodium selenite twice in the early stage of logarithmic growth (4 h, 6 h), with the inoculum size of 3-7%, selenium-rich culture temperature of 37 deg.C, and selenium-rich culture time of 20h.
(4) Adding pericarpium Granati polyphenol, fermenting together, and spray drying to obtain powder.
Diluting active plant liquid with distilled water to 20 ° Brix sugar degree, adding mixed strain of selenium-rich cultured delignified wheat bran and pericarpium Granati polyphenol into the diluted plant liquid, fermenting, adjusting pH of substrate to 3-4, fermenting at 30 deg.C for 24 hr, and fermenting at 4 deg.C for 28 days.
Wherein, the mixed lactobacillus can generate some phenol esterase in the fermentation process, hydrolyze some bound phenol in fruits and plants and release free phenol, and the phenol generates stable intermediate after electron transfer, thereby effectively preventing oxidation of cells and physiological levels, improving antioxidant activity and obviously improving the capacity of scavenging free radicals.
Further, spray drying and storing the fermentation product;
collecting fermentation liquor and product, filtering, homogenizing under 20-25MPa with high pressure homogenizer, atomizing the fermentation liquor with spray drier, and separating the dried product from air to obtain the composite strain active plant ferment.
The lactic acid bacteria series strains for producing the active plant enzyme by fermentation have the following effects:
lactobacillus casei: can resist the defense mechanisms of organisms, including enzymes in the oral cavity, low pH in gastric juice, bile acids in the small intestine, and the like. Therefore, after entering the human body, the lactobacillus casei can survive in a large amount in intestinal tracts, and has the effects of regulating intestinal flora balance, promoting digestion and absorption of the human body and the like. Meanwhile, the lactobacillus casei has the functions of efficiently reducing blood pressure and cholesterol, promoting cell division, generating antibody immunity, enhancing human immunity, preventing cancer, inhibiting tumor growth and the like; also has the beneficial health effects of relieving lactose intolerance and allergy.
Lactobacillus rhamnosus: has outstanding gastric acid and bile resistance, can enter human intestinal tracts in vivo, can effectively improve and adjust human gastrointestinal flora communities, improves human immunity, prevents and treats diarrhea, and is very beneficial to human health.
Lactobacillus paracasei: has effect in promoting balance of microbiota and enzyme in human body. Meanwhile, the composition has the effects of promoting specific and non-specific immunity of a human body, enhancing the immunity of the human body and preventing diseases. The lactobacillus paracasei is beneficial to development, enhances the physique of a human body, delays the aging of the human body and prolongs the life of the human body. The lactobacillus paracasei can settle intestinal tracts, effectively regulate flora in the intestinal tracts, maintain internal environment in the intestinal tracts and prevent and treat constipation caused by flora imbalance.
Lactobacillus acidophilus: regulating intestinal flora balance, inhibiting proliferation of intestinal undesirable microorganisms, and has good nutrition and health promotion effects.
Lactobacillus gasseri: is a rare probiotic strain which can improve the digestive system and prevent the repeated attack of dyspepsia and has the function of adjusting the digestive system.
Lactobacillus reuteri: one of the main metabolites is reuterin, which can inhibit the growth of harmful bacteria such as escherichia coli, salmonella and the like and protect the microecological balance of intestinal tracts; the content of butyric acid in the intestinal tract can be increased, and the main function of the butyric acid is to supply energy to the epithelial cells of the intestinal tract, so that the proliferation of the epithelial cells of the intestinal tract can be promoted, and therefore, the lactobacillus reuteri has important significance for the regeneration and the repair of the epithelial tissues of the intestinal tract; lactic acid and various enzymes such as lipase, bile salt hydrolase and the like can be produced in the intestinal tract, so that the pH value of the intestinal tract is improved, the bacterial growth is inhibited and the like; can synthesize vitamin B group, convert inorganic selenium into organic selenium for organism, which has important significance for maintaining health.
Lactobacillus bulgaricus: lactose is decomposed into glucose and galactose, which are easy to be absorbed and are needed by human brain and nerve development; decomposing milk protein to obtain the required amino acid; inhibiting the propagation of pathogenic bacteria and putrefying bacteria in the intestinal tract; lowering blood cholesterol; activating immunity, and inhibiting cancer cell proliferation.
Lactobacillus plantarum: has certain immunoregulation function; has an inhibiting effect on pathogenic bacteria; reducing serum cholesterol levels and preventing cardiovascular disease; maintaining the flora balance in the intestinal tract; promoting the absorption of nutrient substances; relieving lactose intolerance; inhibiting the formation of tumor cells, etc.
The invention has the beneficial effects that:
(1) In the technical scheme of the invention, the plant raw materials are fermented in a way of co-fermenting the composite strains and the multiple plants, the number of microorganisms in the fermentation product can be effectively increased by the multiple inoculation way, and the nutritive value and other beneficial effects in the fermentation product can be improved by the multiple culture, such as higher pH value, increased yield of lactic acid and consumption of sugar; the active plant ferment produced in the fermentation mode can achieve the antibacterial effect by destroying cell walls or cell membranes, inhibiting cell respiration and inhibiting protein synthesis, contains high-amount lipase, helps digestion of dietary fibers, recovers the balance of intestinal flora, improves the gastrointestinal function of a human body, enhances intestinal peristalsis, reduces the level of blood fat and fatty liver, and can decompose alcohol by alcohol dehydrogenase produced by fermentation to achieve the effects of resisting alcoholism and protecting liver; in addition, the fermentation form of the composite strain can enhance the acid production capability of the strain in the product, reduce the pH value of a fermentation system more quickly, degrade nitrite more completely and inhibit the growth of other harmful microorganisms so as to reduce the content of biogenic amine.
(2) In the technical scheme of the invention, the strain is naturally fermented for 365 days, although the fermentation time is longer, the strain is cultured in 4 seasons of spring, summer, autumn and winter and is subjected to hammer refining with different temperatures, pressures, oxygen contents and the like, so that the strain can better adapt to different environments, the strain is more stable, the adaptability is stronger, and the fermentation mode is suitable for the natural conditions of most of fermentation workshops at present. In addition, 365 daysIn the fermentation process, various enzymes are interacted and chelated continuously, and finally reach 1+1>2, the activity of the ferment is comprehensively promoted and durably preserved, and the absorption and utilization rate of the nutrient substances by the human body are further improved. The production process greatly reserves amino acid, protein, vitamin, bioactive substances and functions in vegetables, fruits and Chinese herbal medicines, and the activity of lactobacillus in the active plant enzyme stock solution prepared by the invention is up to 6.8 multiplied by 10 through detection 8 CFU/mL has the effects of resisting oxidation, preventing aging, enhancing resistance, conditioning intestinal flora and the like, is sour, sweet and delicious, can be taken for a long time, and has very high application value in the fields of large health, food and cosmetics industry.
(3) According to the technical scheme, the 5-10% sucrose solution is used for activating the lactobacillus, so that the fermentation capacity of the lactobacillus can be improved, the activity of the lactobacillus is kept in the fermentation process, the rapid selenium enrichment capacity of the lactobacillus is matched, the fermentation period is shortened, and the production cost is saved. The lactic acid bacteria can consume cane sugar in the fermentation process for self reproduction, greatly reduces the energy in the ferment product, and is a healthy product.
(4) According to the technical scheme, during the pretreatment step, the generated pomegranate peel is reused, the pomegranate peel polyphenol component in the pomegranate peel is extracted, the growth of lactobacillus is stimulated by proper concentration, and the capability of removing free radicals of a fermentation product is improved; the plant raw materials are pretreated by using pectinase, so that the juice yield is improved, the viscosity is adjusted, the juice is clarified, the yield of acid and sugar in the juice is increased, and the sugar hydrolyzed by the pectinase can be used as a carbon source to help the growth of fungi and prevent the inhibition of other fermentation products; meanwhile, polysaccharide chains in the pectin can be degraded, solid matters in the juice can be settled down due to the continuous degradation of pectin molecules, the filterability and the filtering speed of the juice are accelerated, and the aim of shortening the production time is fulfilled.
(5) According to the technical scheme, after fermentation is finished and blending and homogenizing are carried out, sterilization treatment is not carried out, and canning and bottling are directly carried out to obtain the active plant enzyme stock solution, so that high-concentration and high-activity of lactic acid bacteria are maintained to the maximum extent.
(6) According to the technical scheme, microorganisms are used as a selenium-rich carrier, and the characteristics that lactobacillus can quickly accumulate inorganic selenium and convert the inorganic selenium into elements and organic forms are utilized, so that the organic conversion of the inorganic selenium is realized, and the inorganic selenium is further strengthened in food, thereby forming a safe and efficient conversion method and making up for the defect that the plant enzyme product is lack of trace elements.
(7) According to the technical scheme, the delignified wheat bran embedded composite lactobacillus is used for fermentation of pomegranate pulp, so that the fermentation capacity of the lactobacillus can be improved, the fermentation process is shortened, the rapid selenium enrichment capacity of the lactobacillus is matched, the fermentation period is shortened, and the production cost is saved. The wheat bran is composed of high-content prebiotics such as fructo-oligosaccharide, galacto-oligosaccharide and xylo-oligosaccharide, and can promote the growth of some specific microbial populations including lactobacillus, the used raw material wheat bran is cheap and easy to obtain, the activity of the lactobacillus can be improved by the embedding structure of the composite strain, and the reduction of activity, functional failure and the like of the bacteria in the fermentation process, the drying process and the storage process due to the changes of pH value, temperature and external environment can be protected.
(8) According to the technical scheme, during the pretreatment step, the generated pomegranate peel is reused, the pomegranate peel polyphenol component in the pomegranate peel is extracted, the growth of lactobacillus is stimulated by proper concentration, and the capability of removing free radicals of a fermentation product is improved; the plant raw materials are pretreated by using pectinase, so that the juice yield is improved, the viscosity is adjusted, the juice is clarified, the yield of acid and sugar in the juice is increased, and the sugar hydrolyzed by the pectinase can be used as a carbon source to help the growth of fungi and prevent the inhibition of other fermentation products; meanwhile, polysaccharide chains in the pectin are also degraded, and the continuous degradation of pectin molecules can lead solid matters in the fruit juice to lose support and settle down, thus accelerating the filterability and the filtering speed of the fruit juice and achieving the purpose of shortening the production time.
(9) In the technical scheme of the invention, spray drying is carried out on the final fermentation product, the drying speed is high, the cost is low, the operation is convenient, in addition, because the delignified wheat bran protects the mixed lactobacillus, the effective components can not be reduced, the production time is shortened, the prepared solid preparation is convenient to transport and store, and the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the production process of an active plant enzyme of the present invention.
FIG. 2 is a report of the detection of the stock solution of active ferment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In the embodiment, lactobacillus acidophilus, lactobacillus plantarum and lactobacillus rhamnosus composite strains are adopted;
a production process of active plant enzyme comprises the following steps:
(1) Selecting full and mature vegetable and fruit raw materials, cleaning the vegetable and fruit raw materials by sterile water, peeling the vegetable and fruit raw materials, preserving pomegranate rind to extract pomegranate rind polyphenol, and performing pretreatment by using pectinase;
taking 10kg of fresh dunaliella salina, citrus, red dates, pineapples, apples, pears, medlar, yams, ginseng, mulberries, tea leaves, ginger and pomegranates, proportioning by weight in the table 1, washing with sterile water, peeling, breaking walls, mixing, adding 20mg/L of pectinase, adding sterilized deionized water, pasteurizing the prepared plant juice at 5min/80 ℃, and cooling to room temperature.
Table 1 raw materials and weight ratios
After the pomegranate rind is dried in the sun, grinding the dry pomegranate rind into fine powder by using a multi-grinding machine, taking 80g of pomegranate rind powder, extracting phenolic substances in the pomegranate rind powder by using 1000ml of 80% methanol, reacting for 24 hours, centrifuging for 30 minutes to obtain supernatant, performing vacuum drying at 40 ℃ by using a rotary evaporator, and freezing and storing the extract to obtain the pomegranate rind polyphenol.
(2) Performing activation culture on the mixed strain by using a 10% sucrose solution to obtain an active lactobacillus solution;
(3) Adding pomegranate peel polyphenol for co-fermentation to obtain the active plant enzyme stock solution.
Adding the plant juice into pomegranate peel polyphenol, and mixing the plant juice with the pomegranate peel polyphenol according to a volume ratio of 1:1 and lactic acid bacteria solution are mixed evenly and put in a fermentation tank for fermentation, the pH of the substrate is adjusted to 4, and the mixture is naturally fermented for 365 days at room temperature. And continuously performing fermentation maintenance, adjusting the fermentation direction and detecting the fermentation effect.
(5) After fermentation is mature, collecting fermentation liquor and products, filtering, homogenizing, directly canning and bottling to obtain the active plant enzyme stock solution. The sealing, inspection, labeling, packaging and the like after canning are general processes for food production and are not discussed.
Example 2
The composite strain of lactobacillus acidophilus, lactobacillus plantarum and lactobacillus rhamnosus is adopted in the embodiment;
a production process of active plant enzyme comprises the following steps:
(1) Peeling plant materials, preserving pomegranate rind to extract pomegranate rind polyphenol, and performing pretreatment by using pectinase;
taking 10 parts of fresh dunaliella salina, 10 parts of citrus, 20 parts of red date, 10 parts of pineapple, 12 parts of apple, 15 parts of pear, 5 parts of medlar, 5 parts of yam, 5 parts of ginseng, 5 parts of mulberry, 5 parts of tea, 5 parts of ginger and 15 parts of pomegranate, totaling 1000g of plant raw materials, and drying and storing peel; crushing peeled fructus Punicae Granati, adding 20mg/L pectinase, adding sterilized deionized water, pasteurizing at 5min/80 deg.C, and cooling to 20 deg.C.
After the pomegranate rind is dried in the sun, grinding the dry pomegranate rind into fine powder by using a multi-grinding machine, extracting phenolic substances in the pomegranate rind powder from 8g of the pomegranate rind powder by using 1000ml of 80% methanol, reacting for 24 hours, centrifuging for 30 minutes to obtain supernatant, performing vacuum drying at 40 ℃ by using a rotary evaporator, and freezing and storing the extract to obtain the pomegranate rind polyphenol.
(2) Modifying the mixed strain by using delignified wheat bran, and culturing the modified mixed strain by using a selenium-rich culture medium;
placing the mixture containing the hyphae of lactobacillus acidophilus, lactobacillus plantarum and lactobacillus rhamnosus composite strain and culture medium components in a test tube for centrifugation for 15 minutes. The supernatant was discarded and the particles were washed with distilled water and centrifuged again as described above. Until the biomass was dried to constant weight at 90 ℃, dry mixed lactobacillus powder was obtained.
Boiling wheat bran in 1% NaOH solution to remove lignin, autoclaving delignified wheat bran at 120 deg.C and 1atm for 15min, mixing 3-7g delignified wheat bran with 0.8-1.2g mixed lactobacillus powder in 500mL MRS broth, and culturing at 37 deg.C for 48h. The mixed seed culture modified by delignified wheat bran is obtained after subsequent washing with sterile 1/4 strength ringer's solution to remove free bacteria.
The selenium-enriched culture medium is prepared by using MRS broth culture medium, and 2% of glucose, 3% of beef powder, yeast powder (1:2), 0.6% of dipotassium phosphate, 0.01% of magnesium sulfate, 0.004% of manganese sulfate monohydrate, 0.1% of tween-80 and 3 mug/mL of sodium selenite are added into the culture medium. Inoculating the mixed strain into selenium-rich culture medium, adding sodium selenite twice in early logarithmic growth stage (4 h, 6 h), with the inoculum size of 3%, selenium-rich culture temperature of 37 deg.C, and selenium-rich culture time of 20h.
(3) Adding pericarpium Granati polyphenol, fermenting together, spray drying, and making into powder.
Diluting pomegranate fruit liquid with distilled water to 20 ° Brix sugar degree, adding 2-5g mixed strain of selenium-rich cultured delignified wheat bran and 0.1g pomegranate peel polyphenol into 100ml diluted plant juice, fermenting, adjusting pH of substrate to 3, fermenting at 30 deg.C for 24h, and fermenting at 4 deg.C for 28 days.
Collecting fermentation liquor and product, filtering, homogenizing under 20-25MPa with high pressure homogenizer, atomizing the fermentation liquor with spray drier, and separating the dried product from air to obtain Lactobacillus acidophilus, lactobacillus plantarum and Lactobacillus rhamnosus composite strain active plant ferment.
Comparative example 1
The comparative example differs from example 2 in that the species employed in the comparative example was lactobacillus plantarum alone.
The viability of the lactobacilli was now compared for the active plant ferment products of examples 1-2 and comparative example 1.
Table two: comparison of Lactobacillus viability (%) of the active plant ferment products of examples 1-2 with comparative example 1
Group of | Day1 | Day8 | Day12 | Day16 | Day20 | Day24 |
Example 1 | 100% | 116% | 128% | 128% | 119% | 115% |
Example 2 | 100% | 121% | 134% | 130% | 122% | 118% |
Comparative example 1 | 100% | 111% | 119% | 121% | 115% | 111% |
From the lactobacillus viability test of the active plant ferment products in examples 1-2 and comparative example 1, the lactobacillus viability of the active ferment solution and the active ferment powder is higher in the products of the three examples than in comparative example 1, and it can be seen that the same quality of the strains are involved in the fermentation, and the multi-strain culture mode produces more lactobacilli than the single-strain fermentation.
Comparative example 2
This comparative example differs from example 2 in that:
the lactobacillus acidophilus, lactobacillus plantarum and lactobacillus rhamnosus composite strain is used, but pomegranate peel polyphenol is not added.
In step (2), 3g delignified wheat bran was mixed with 0.8g of the harvested mixed lactobacillus powder in MRS broth; in the step (2), the selenium-rich culture conditions are as follows: the inoculation amount is 3 percent, the selenium enrichment culture temperature is 37 ℃, and the selenium enrichment culture time is 20 hours; in the step (3), 2g of mixed strains cultured in a selenium-rich way and modified by delignified wheat bran are used for fermentation, and the pH value of the substrate is adjusted to 3.
The antioxidant activity of the active plant ferment products of examples 1-2 and comparative example 2 are now compared. The Antioxidant Activity (AA) of the plant juice is determined by adopting an ABTS free radical cation decoloration method. ABTS reacts with potassium persulfate to prepare ABTS + detection reagent. The samples were analyzed at 5 different dilutions, with the detection reagent diluted with EtOH at concentrations of 5, 50, 150, 250, 500. Mu.L each with distilled H 2 O is diluted to 1mL, and 30 μ L of ferment freeze-dried powder solution is added into 2.97mL of detection reagents with different concentrations in the final volume.
A third table: antioxidant activity (% inhibition) of examples 1-3 versus the active plant ferment product of comparative example 2
From the results of comparing the antioxidant activities of the active plant ferment products of examples 1-2 with that of comparative example 2, the antioxidant activities of the active plant ferment products of the three examples are higher than that of the product of comparative example 2, and the inhibition rate has reached 100% at a concentration of 150 μ g/ml, demonstrating that pomegranate peel polyphenol as a component participating in fermentation can improve the antioxidant ability of the product and has a promoting effect on the efficiency of fermentation.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (10)
1. The production process of the active plant enzyme is characterized in that the active plant enzyme is synthesized by a method of jointly fermenting a delignified wheat bran modified mixed strain, and the production process specifically comprises the following steps:
(1) Selecting raw materials, cleaning Chinese herbal medicines and vegetable and fruit raw materials with sterile water, peeling, breaking the wall of pulp, mixing, and pretreating with pectinase;
(2) Preserving pericarpium Granati to extract pericarpium Granati polyphenol;
(3) Inoculating pericarpium Granati polyphenol and wall-broken raw materials into lactobacillus composite strain, fermenting, chelating, and making into active plant enzyme stock solution 365 days later;
or modifying the mixed strain by using delignified wheat bran, and culturing the modified mixed strain by using a selenium-rich culture medium; adding pericarpium Granati polyphenol, fermenting for 365 days, and making the fermented product into powder.
2. The process for producing an active plant enzyme according to claim 1, wherein the raw materials of the Chinese herbal medicine and the vegetable and fruit are: dunaliella, citrus, red date, pineapple, apple, pear, chinese wolfberry, chinese yam, ginseng, mulberry, tea, ginger and pomegranate; the formula is prepared by mixing the following components in parts by weight: 10-15 parts of dunaliella salina, 10-13 parts of citrus, 20-25 parts of red dates, 10-15 parts of pineapples, 12-17 parts of apples, 15-20 parts of pears, 5-10 parts of medlar, 5-10 parts of Chinese yams, 5-8 parts of ginseng, 5-10 parts of mulberries, 5-10 parts of tea leaves, 5-8 parts of ginger and 15-20 parts of pomegranates.
3. The process for producing an active plant enzyme according to claim 1, wherein in the step (2), the specific method for extracting pomegranate peel polyphenol comprises: sun drying pericarpium Granati, grinding into fine powder with multiple mills, extracting phenols in pericarpium Granati powder with methanol, reacting for 24 hr, centrifuging to obtain supernatant, and freeze drying with rotary evaporator.
4. The process for producing the active plant enzyme according to claim 1, wherein in the step (3), the selenium-rich culture medium comprises 2% of glucose, 3% of beef powder, namely yeast powder (1:2), 0.6% of dipotassium hydrogen phosphate, 0.01% of magnesium sulfate, 0.004% of manganese sulfate monohydrate, 0.1% of tween-80 and 3-5 μ g/mL of selenium, and the conditions for selenium-rich culture of the mixed strain are as follows: the strain inoculation amount is 3-7%, the culture temperature is 37 ℃, and the culture time is 20-24 hours.
5. The process for producing an active plant ferment according to claim 1, wherein in the step (3), the compound strain is a mixture of lactobacillus including two or more of lactobacillus casei, lactobacillus rhamnosus, lactobacillus paracasei, lactobacillus acidophilus, lactobacillus gasseri, lactobacillus reuteri, lactobacillus bulgaricus and lactobacillus plantarum.
6. The process for producing active plant enzyme according to claim 1, wherein the step of modifying the mixed strain with delignified wheat bran in step (3) comprises the following steps: boiling wheat bran in NaOH solution to remove lignin, carrying out autoclaving on the delignified wheat bran, carrying out adsorption embedding on the delignified wheat bran and mixed strains in an MRS broth culture medium, and then cleaning the delignified wheat bran with sterile 1/4 strength ringer's solution for later use.
7. The process according to claim 6, wherein the mixed bacterial strain is extracted from MRS broth by adsorption-embedding method: placing the strain mixed liquor in a sterilized test tube, centrifuging, removing supernatant, washing particles with distilled water, centrifuging again until the biomass is dried to constant weight, and then using for adsorption embedding.
8. The process for producing the active plant enzyme according to claim 1, wherein in the step (3), the co-fermentation is carried out under conditions of adding NaOH, adjusting pH of the substrate to 4-5, fermenting at 30 ℃ for 24h, fermenting at 4 ℃ for 28 days, and fermenting at room temperature for 365 days.
9. The process for producing active plant ferment of claim 1, wherein the step (1) of pre-treating the plant and the pulp with pectinase comprises the following steps: crushing peeled fructus Punicae Granati, adding 20-40mg/L pectinase, adding sterilized deionized water, pasteurizing the prepared plant juice at 5min/80 deg.C, and cooling to room temperature.
10. The process for producing an active plant enzyme according to claim 1, wherein the specific process for powdering the fermentation product in step (3) comprises: collecting fermentation liquor and product, filtering, homogenizing under 20-25MPa with high pressure homogenizer, atomizing the fermentation liquor with spray drier, and separating the dried product from air to obtain the composite strain active plant ferment.
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