CN107788517A - A kind of method for strengthening ferment effect using lactobacillus bulgaricus - Google Patents

A kind of method for strengthening ferment effect using lactobacillus bulgaricus Download PDF

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CN107788517A
CN107788517A CN201710972121.6A CN201710972121A CN107788517A CN 107788517 A CN107788517 A CN 107788517A CN 201710972121 A CN201710972121 A CN 201710972121A CN 107788517 A CN107788517 A CN 107788517A
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ferment
lactobacillus
gluconacetobacter
saccharomycete
bulgaricus
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CN107788517B (en
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方芳
朱茂伟
李益烽
李巧玉
陈坚
堵国成
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Beijing Zimeitang Biotechnology Co ltd
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Jiangnan University
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L33/00Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2400/00Lactic or propionic acid bacteria
    • A23V2400/11Lactobacillus
    • A23V2400/123Bulgaricus
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    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12RINDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
    • C12R2001/00Microorganisms ; Processes using microorganisms
    • C12R2001/01Bacteria or Actinomycetales ; using bacteria or Actinomycetales
    • C12R2001/225Lactobacillus

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Abstract

The invention discloses a kind of method for strengthening ferment effect using lactobacillus bulgaricus, belong to fermented food technical field.The present invention is by adding saccharomyces cerevisiae N85 into fruit and vegetable materials, gluconacetobacter Q1 and lactobacillus delbruockii subspecies bulgaricus B1, enhance the beneficial function of ferment, the ferment reducing power of preparation is set to improve 43.3% compared to control group, DPPH clearance rates have also brought up to 93.09% from 88.25%, lactic acid content improves 36.1%, and acetic acid content improves 35.2%.Prolease activity improves 11.9% compared to control group, adds the content of volatile materials, and ethyl acetate content improves 85.1%, and pentyl acetate content improves 89.1%, ferment is had special fruit flavor, and improves ferment bacteriostasis.

Description

A kind of method for strengthening ferment effect using lactobacillus bulgaricus
Technical field
The present invention relates to a kind of method for strengthening ferment effect using lactobacillus bulgaricus, belongs to fermented food technology neck Domain.
Background technology
Plant enzyme is using plants such as veterinary antibiotics as raw material, through multiple-microorganisms such as saccharomycete, acetic acid bacteria, lactobacillus A kind of microorganism formulation containing abundant enzyme, vitamin, mineral matter and a variety of secondary metabolites that co-fermentation forms.Plant Thing ferment is also referred to as ferment.Ferment is different from common enzyme preparation, due to promote to digest, relax bowel, it is anti-oxidant, antibacterial, Suppress the multiple functions such as tumour, be a kind of health product with very high market value.Existing many natural plant enzymes have Many restrictive factors, such as easy dye miscellaneous bacteria, mouthfeel or have a poor flavour, fermentation period length, it is difficult to product quality is controlled, by environment shadow Sound is larger.Therefore, product oxidation resistance is improved, the taste and flavor of ferment is improved, strengthens the ferment preparation side of bacteriostasis Method, it is more beneficial for the industrialized production of ferment.
The content of the invention
First purpose of the present invention is to provide method that is a kind of while improving pectase function factor and flavor, described Method is that inoculation yeast bacterium, gluconacetobacter and lactic acid bacteria are fermented in using fruits and vegetables as the ferment of raw material.
In one embodiment of the invention, the saccharomyces cerevisiae is saccharomyces cerevisiae (Saccharomyces Cerevisiae) N85, gluconacetobacter (Gluconacetobacter xylinus) Q1 and Lactobacillus delbrueckii are sub- Kind (Lactobacillus delbrueckii subsp.bulgaricus strain) B1, B2.
Second purpose is to provide a kind of probiotics ferment, is inoculation yeast bacterium, glucose vinegar using vegetables and fruit as raw material Bacillus and lactic acid bacteria co-fermentation are prepared.
In one embodiment of the invention, the probiotics ferment is the inoculation wine brewing using vegetables and fruit as raw material Yeast, gluconacetobacter and Lactobacillus delbrueckii co-fermentation are prepared.
In one embodiment of the invention, the vegetables and fruit include dragon fruit, apple, tomato and soya bean,
In one embodiment of the invention, the saccharomyces cerevisiae is saccharomyces cerevisiae (Saccharomyces Cerevisiae) N85, gluconacetobacter are xylose gluconacetobacter (Gluconacetobacter xylinus) Q1, lactobacillus For lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus strain) B1 Or lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus strain) B2。
In one embodiment of the invention, the saccharomyces cerevisiae N85 is industrialization bacterial strain, it has been disclosed that was inscribed in 2016 For《The research of metabolic engineering brewing yellow rice wine yeast low yield urethanes》Paper in.
In one embodiment of the invention, the gluconacetobacter Q1 is preserved in China on July 23rd, 2014 Type Tissue Collection, deposit number are CCTCC M 2014353.
In one embodiment of the invention, the lactobacillus delbruockii subspecies bulgaricus B1 is June 26 in 2017 It is preserved in China typical culture collection center day, deposit number is CCTCC M 2017370, and preservation address Wuhan, China is military Chinese university.
In one embodiment of the invention, the lactobacillus delbruockii subspecies bulgaricus B2 is from Inner Mongol agricultural Key lab of the dairy products biotechnology Ministry of Education of university lactic acid bacteria culturers resources bank (LABCC), numbering LABCC IMAU20094 DBTE ML12-2-2。
In one embodiment of the invention, the ferment is prepared according to the following steps:(1) with dragon fruit, apple, western red Persimmon and soya bean are raw material, add the glucose that material quality percentage is 15~20%, adding material quality percentage is 100% water, is stirred;(2) by volume, 1% saccharomycete and 2% acetic acid bacteria are inoculated with, is placed in 35~37 DEG C Incubated, stirring in every 20~24 hours once, is fermented to the 3rd~4 day, the lactic acid bacteria of inoculation 3~5%, 28~30 DEG C of constant temperature Closed culture, ferment and terminated fermentation to the 12nd~15 day.
Third object of the present invention is to provide a kind of preparation method of ferment effect, and methods described comprises the following steps: (1) using dragon fruit, apple, tomato and soya bean as raw material, the glucose that material quality percentage is 15~20% is added, then add Enter the water that material quality percentage is 100%, stir;(2) by volume, 1% saccharomycete and 2% vinegar are inoculated with Sour bacterium, be placed in 35~37 DEG C it is incubated, every 20~24 hours stirring once, ferment to the 3rd~4 day, be inoculated with 5% lactic acid Bacterium, 30 DEG C of constant-temperature enclosed cultures, ferment and terminated fermentation by the 15th day.
In one embodiment of the invention, the saccharomycete, acetic acid bacteria or the bacterial concentration of lactic acid bacteria are 1~9.9 ×107CFU/mL。
In one embodiment of the invention, the saccharomycete is saccharomyces cerevisiae (Saccharomyces cerevisiae)N85。
In one embodiment of the invention, the acetic acid bacteria is gluconacetobacter (Gluconacetobacter xylinus)Q1。
In one embodiment of the invention, the lactic acid bacteria is lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus strain) B1 or lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus strain)B2。
In one embodiment of the invention, the step is specific as follows:(1) with dragon fruit, apple, tomato and Huang Beans etc. are raw material, after being cleaned with hot water, are air-dried, and be cut into small pieces shape, several fruits and vegetables of the quality such as precise, and uniformly mixing, puts Enter in round;(2) glucose that material quality percentage is 12~15% is added, adding fruit quality percentage is 100% water, is stirred;(3) saccharomycete and 2% acetic acid bacteria of addition 1%, 37 DEG C of incubated, holdings are placed in One-way exhaust, and stirring in 24 hours is once;The concentration of bacterium solution is 107CFU/mL;(4) fermentation added 5% breast by the 4th day Sour bacterium, 30 DEG C of constant-temperature enclosed cultures;The concentration of bacterium solution is 107CFU/mL;(5) fermentation terminated fermentation by the 15th day.
Beneficial effect:The present invention is by adding saccharomyces cerevisiae (Saccharomyces cerevisiae) into fruit and vegetable materials N85, gluconacetobacter (Gluconacetobacter) Q1 and lactobacillus delbruockii subspecies bulgaricus (Lactobacillus Delbrueckii subsp.bulgaricus strain) B1, the beneficial function of ferment is enhanced, reducing power compares control group Improve 43.3%, DPPH clearance rates and also brought up to 93.09% from 88.25%, lactic acid content improves 36.1%, and acetic acid contains Amount improves 35.2%.Prolease activity improves 11.9% compared to control group, adds the content of volatile materials, acetic acid Ethyl ester content improves 85.1%, and pentyl acetate content improves 89.1%, ferment is had special fruit flavor, and improve Ferment bacteriostasis, can effectively suppress bacillus subtilis, Escherichia coli and Human fetal cardiomyocytes.
Biomaterial preservation
One plant of lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus Strain) B1 is preserved in China typical culture collection center on June 26th, 2017, and deposit number is CCTCC M 2017370, preservation address Wuhan, China, Wuhan University.
Brief description of the drawings
Fig. 1 is tyrosine concentration standard curve.
Embodiment
In embodiment, yellow rice wine industry is disclosed with saccharomyces cerevisiae (Saccharomyces cerevisiae) N85 It is entitled in 2016《The research of metabolic engineering brewing yellow rice wine yeast low yield urethanes》Paper in.Glucose vinegar Bacillus (Gluconacetobacter) Q1, it is preserved in China typical culture collection center, preservation on July 23rd, 2014 Numbering is CCTCCM2014353;Lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii Subsp.bulgaricus strain) B1 screened from cheese, has been preserved in Chinese Typical Representative culture guarantor on June 26th, 2017 Tibetan center, deposit number CCTCCM2017370;Lactobacillus delbruockii subspecies bulgaricus (Lactobacillus Delbrueckii subsp.bulgaricus strain) B2 is in the religion of Agricultural University of the Inner Mongol dairy products biotechnology Preservation in Yu Bu key labs lactic acid bacteria culturers resources bank (LABCC), deposit number are LABCC IMAU20094 DBTE ML12-2-2。
The thalline condition of culture that the embodiment of table 1 is related to
Organic acidity test:Ferment enzyme liquid to be measured is taken, after diluting ten times with ultra-pure water, using syringe by liquid assimilating, is led to After crossing organic acid filter membrane, inject in liquid phase bottle.And calibrated using nitration mixture standard specimen.Use the high performance liquid chromatography of Agilent 1200 Instrument, carry out the measurement of kinds of organic acids and quantity.
DPPH radical scavenging activities determine:Ferment sample is diluted 5 times, takes 2mL samples to be added to 2mL0.1mg/mL's In DPPH- ethanol solutions, fully mix, 25 DEG C of lucifuges react 30min, using deionized water as reference solution, under the conditions of 517nm Absorbance is determined, blank group replaces sample with 2mL absolute ethyl alcohols.
DPPH clearance rates (/ %)=[1- (A1-A2)/A0]×100
In formula:A0For the absorbance of blank group, A1For the absorbance of sample solution, A2For the absorbance of sample copy bottom tube.
The measure of reducing power:It is measured using potassium ferricyanide reducing process.Ferment sample to be measured is diluted 5 times, takes 1mL dilute Release sample to be added in the test tube equipped with 1mL phosphate buffers (0.2mol/L, pH6.6), it is 1% to add 2mL mass fractions The potassium ferricyanide, 50 DEG C of water-bath accurate response 30min are placed in, add the trichloroacetic acid that 2mL mass fractions are 10%, 3000r/ Min centrifuges 10min, takes 2ml supernatants immediately, adds ferric trichloride and 1mL deionized waters that 1mL mass fractions are 0.5%, quiet After putting 5min, absorbance is determined under the conditions of 700nm, absorbance is bigger, shows that reducing power is stronger, and same measure repeats two It is secondary.
The measure of prolease activity:The measure of tyrosine standard curve:Take 6 test tubes to draw 0 respectively, 20,40,60,80, 100ug/mL tyrosine solution 1mL, each sodium carbonate liquor 5ml for adding 0.4mol/L, add and diluted 3 times of forint examination Agent 1mL.Shake up, be placed in 40 DEG C of water-bath insulation color development 20min, absorbance is determined under the conditions of wavelength 660nm.Measure three It is secondary, average.Using absorbance as ordinate, tyrosine concentration is abscissa, draws standard curve.1mL is added in test tube Ferment enzyme liquid, it is placed in 40 DEG C of water-baths and preheats 5 minutes, then adds 1mL2% casein solution, accurate clock reaction 10min, 2mL 0.4mol/L solution of trichloroacetic acid is added immediately, is filtered after 15min with filter paper, is taken 1mL filtrates, add 5mL0.4mol/L sodium carbonate liquor and 1mL Folin reagents, 40 DEG C of insulation color development 20min, it is close to determine light under wavelength 660nm Angle value.Tyrosine concentration can be converted into according to standard curve.Prolease activity unit definition:At 40 DEG C, under the conditions of pH3.6, often The enzyme amount that minute caseinhydrolysate discharges 1 microgram tyrosine is defined as 1 protease unit.
In formula:
X is the tyrosine concentration in reaction solution;
V is reaction solution cumulative volume (mL);
T is the reaction time (min);
N is enzyme liquid extension rate;
W is enzyme liquid volume (mL).
The measure of bacteriostasis:It is measured using Odontothrips loti.Sterilized agar medium is heated to melt completely Change, be poured in culture dish, get over 20mL per ware, 4~6 Oxford cups are put in every ware media surface after solidification.Meanwhile it will go out Semisolid culturemedium (bacterium culture medium) heating of bacterium is melted completely, is dispensed into sterilized 50mL centrifuge tubes, often pipe is about 20mL.Treat that semisolid culturemedium is cooled to 45 DEG C or so, be respectively connected to extension rate as 103、104、105、106Bacterium solution 100uL, after being well mixed, carefully pour into and put well in the culture dish of Oxford cup, to avoid pouring into culture medium in Oxford cup.Wait to train After supporting base solidification, Oxford cup is carefully taken out, idle loop circular one by one is formed on culture dish, is added in idle loop 100uL measuring samples or control sample, in 37 DEG C of 16~18h of quiescent culture.
Volatile materials determines:It is measured using GC-MS.
Embodiment 1
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality The glucose of percentage 15%, the water that vegetables and fruits material quality percentage is 100% is added, is stirred.
2. inoculating strain:
Activated strains:Saccharomyces cerevisiae N85, gluconacetobacter Q1 are taken out from -80 DEG C of refrigerators, streak inoculation is in corresponding respectively Culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:By volume, 1mL bacterium solutions/100g fruits and vegetables quality saccharomyces cerevisiae N85 and 2mL bacterium solution/100g fruits and vegetables matter is added The gluconacetobacter Q1 of amount, 37 DEG C of constant-temperature enclosed fermentations are placed in, stirring in every 24 hours is once.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
Embodiment 2
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality Percentage is 15% glucose, adds the water that vegetables and fruits material quality percentage is 100%, stirs.
2. inoculating strain:
Activated strains:By saccharomyces cerevisiae N85 and lactobacillus delbruockii subspecies bulgaricus B1, taken out from -80 DEG C of refrigerators, line It is inoculated in corresponding culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:Add the saccharomyces cerevisiae N85 of 1mL bacterium solutions/100g fruits and vegetables quality, be placed in 37 DEG C it is incubated, keep unidirectional Exhaust, and stirring in 24 hours is once.Ferment by the 4th day, the Lactobacillus delbrueckii Bao Jiali of addition 5mL bacterium solutions/100g fruits and vegetables quality Subspecies B1,30 DEG C of constant-temperature enclosed fermentations.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
Embodiment 3.
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality Percentage is 15% glucose, adds the water that vegetables and fruits material quality percentage is 100%, stirs.
2. inoculating strain:
Activated strains:By saccharomyces cerevisiae N85 and lactobacillus delbruockii subspecies bulgaricus B2, taken out from -80 DEG C of refrigerators, line It is inoculated in corresponding culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:Add the saccharomyces cerevisiae N85 of 1mL bacterium solutions/100g fruits and vegetables quality, be placed in 37 DEG C it is incubated, keep unidirectional Exhaust, and stirring in 24 hours is once.Ferment by the 4th day, the Lactobacillus delbrueckii Bao Jiali of addition 5mL bacterium solutions/100g fruits and vegetables quality Subspecies B2,30 DEG C of constant-temperature enclosed fermentations.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
Embodiment 4.
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality Percentage is 15% glucose, adds the water that vegetables and fruits material quality percentage is 100%, stirs.
2. inoculating strain:
Activated strains:By saccharomyces cerevisiae N85, gluconacetobacter Q1 and lactobacillus delbruockii subspecies bulgaricus B1, from -80 DEG C Refrigerator takes out, and streak inoculation is in corresponding culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:Add the Portugal of saccharomyces cerevisiae N85 and 2mL bacterium solution/100g fruits and vegetables quality of 1mL bacterium solutions/100g fruits and vegetables quality Sweet and sour bacillus Q1,37 DEG C of incubated, holding one-way exhausts are placed in, and stirring in 24 hours is once.Ferment by the 4th day, add 5mL The lactobacillus delbruockii subspecies bulgaricus B1 of bacterium solution/100g fruits and vegetables quality, 30 DEG C of constant-temperature enclosed fermentations.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
Embodiment 5.
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality Percentage is 15% glucose, adds the water that vegetables and fruits material quality percentage is 100%, stirs.
2. inoculating strain:
Activated strains:By saccharomyces cerevisiae N85, gluconacetobacter Q1 and lactobacillus delbruockii subspecies bulgaricus B2, from -80 DEG C Refrigerator takes out, and streak inoculation is in corresponding culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:Add the Portugal of saccharomyces cerevisiae N85 and 2mL bacterium solution/100g fruits and vegetables quality of 1mL bacterium solutions/100g fruits and vegetables quality Sweet and sour bacillus Q1,37 DEG C of incubated, holding one-way exhausts are placed in, and stirring in 24 hours is once.Ferment by the 4th day, add 5mL The lactobacillus delbruockii subspecies bulgaricus B2 of bacterium solution/100g fruits and vegetables quality, 30 DEG C of constant-temperature enclosed fermentations.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
Reference examples
1. prepared by ferment raw material:After dragon fruit, apple, tomato and soya bean are cleaned with hot water, the work of cleaning is placed in Typhoon is done, and be cut into small pieces shape;Each 100g of every kind of fruits and vegetables is weighed, uniformly mixing, is put into round, adds vegetables and fruits material quality Percentage is 15% glucose, adds the water that vegetables and fruits material quality percentage is 100%, stirs.
2. inoculating strain:
Activated strains:Saccharomyces cerevisiae N85 is taken out from -80 DEG C of refrigerators, streak inoculation is in corresponding culture medium.
Obtain thalline:Single bacterium colony on picking solid medium is inoculated into fluid nutrient medium, and culture to logarithm respectively is given birth to For a long time, 10000rpm centrifuges 10min and abandons supernatant, with sterile saline with physiological saline:Bacterium solution 1:1 ratio is resuspended, and makes bacterium It is dense up to 1~5 × 107CFU/mL。
Inoculation:The saccharomyces cerevisiae N85 of 1mL bacterium solutions/100g fruits and vegetables quality is added, is placed in 37 DEG C of constant-temperature enclosed fermentations, is kept One-way exhaust, and stirring in 24 hours is once.
3. obtain ferment enzyme liquid:Ferment and terminated fermentation by the 15th day, centrifuged through 10000r/min, supernatant is enzyme liquid.
The ferment prepared to embodiment 1~5 and reference examples carries out inoxidizability, organic acid content, protease activity, antibacterial energy Power and volatile materials measure.
Inoxidizability ability measurement result is as shown in table 2, the ferment after lactobacillus delbruockii subspecies bulgaricus B1 reinforcings, Oxidation resistance improves, and wherein reducing power improves 43.3%, DPPH clearance rates and brought up to 93.09% by 88.25%, and adds Common lactobacillus delbruockii subspecies bulgaricus B2 ferment reducing power raising amount and DPPH clearance rates is only 21.2% He 91.07%.
The inoxidizability ability of ferment under the different embodiments of table 2
Organic acid content testing result is as shown in table 3, the ferment after lactobacillus delbruockii subspecies bulgaricus B1 reinforcings, has Machine acid content increases before being relatively not added with, and wherein lactic acid content improves 36.1%, and acetic acid content improves 35.2%;Add Add the acetic acid of lactobacillus delbruockii subspecies bulgaricus B2 ferment and lactic acid content to show as reducing, be unfavorable for product storage and Guarantee the quality.
The organic acid content (g/L) of ferment under the different embodiments of table 3
Protease activity measurement result is as shown in table 4, tyrosine standard curve such as Fig. 1, sub- through Lactobacillus delbrueckii Ferment after kind B1 reinforcings, protease activity improve 11.9%.
The protease activity of ferment under the different embodiments of table 4
Bacteriostasis measurement result is as shown in table 5, the ferment after lactobacillus delbruockii subspecies bulgaricus B1 reinforcings, performance Going out the inhibitory action to bacillus subtilis, Escherichia coli and Human fetal cardiomyocytes, antibacterial circle diameter is respectively 15.3mm, 16.6mm 14.3mm;And the ferment for adding lactobacillus delbruockii subspecies bulgaricus B2 does not have bacteriostasis.
The bacteriostasis (d/mm) of ferment under the different embodiments of table 5
Volatile materials measurement result is as shown in table 6, the ferment after lactobacillus delbruockii subspecies bulgaricus B1 reinforcings, waves In volatile material, ethanol content reduces 20.1%, and suitable more crowds eat, and ethyl acetate content improves 85.1%, second Sour pentyl ester content improves 89.1%, adds fruit aroma;Add the ferment second of common lactobacillus delbruockii subspecies bulgaricus Alcohol content adds 6.0% compared to lactobacillus delbruockii subspecies bulgaricus B1, and ethyl acetate content reduces 70.9%, flavor It is bad.
The volatile matter content (g/L) of ferment under the different embodiments of table 6.
Although the present invention is disclosed as above with preferred embodiment, it is not limited to the present invention, any to be familiar with this skill The people of art, without departing from the spirit and scope of the present invention, it can all do various change and modification, therefore the protection model of the present invention Enclose being defined of being defined by claims.

Claims (10)

  1. It is 1. a kind of while improve pectase feature and the method for flavor, it is characterised in that methods described be to using fruits and vegetables as Inoculation yeast bacterium, gluconacetobacter and lactobacillus are fermented in the ferment of raw material.
  2. 2. according to the method for claim 1, it is characterised in that the saccharomycete is saccharomyces cerevisiae;The gluconacetobacter For xylose gluconacetobacter;The lactobacillus is lactobacillus delbruockii subspecies bulgaricus.
  3. 3. according to the method for claim 1, it is characterised in that the saccharomycete is saccharomyces cerevisiae N85, the glucose vinegar bar Bacterium is xylose gluconacetobacter Q1;The lactobacillus is lactobacillus delbruockii subspecies bulgaricus (Lactobacillus Delbrueckii subsp.bulgaricus strain) B1, it is preserved in Chinese Typical Representative culture on June 26th, 2017 Collection, deposit number are CCTCC M 2017370, preservation address Wuhan, China, Wuhan University.
  4. 4. a kind of ferment, it is characterised in that formed using vegetables and/or fruit as raw material through microbial fermentation, contain thalline quantity ≥1×108Saccharomycete, gluconacetobacter and lactobacillus.
  5. 5. ferment according to claim 4, it is characterised in that the raw material includes dragon fruit, apple, tomato or soya bean At least one of.
  6. 6. the ferment according to claim 4 or 5, it is characterised in that be prepared according to the following steps:(1) added into raw material former Expect the glucose, the water of material quality 90~110% that mass percent is 15~20%, stir;(2) by volume, connect The saccharomycete and 1~2% gluconacetobacter of kind of step (1) mixed liquor 0.5~1%, are placed in 35~37 DEG C of cultures, and every 20~24 Hour stirring once, is fermented to the 3rd~4 day, the lactobacillus of inoculation 3~5%, 28~30 DEG C of anaerobic cultures, ferment to the 12nd~ Terminate fermentation within 15 days;The saccharomycete, gluconacetobacter and or lactobacillus concentration be 1.0 × 107~9.9 × 109CFU/mL。
  7. 7. ferment according to claim 6, it is characterised in that saccharomycete is saccharomyces cerevisiae N85, and gluconacetobacter is xylose Gluconacetobacter Q1, lactobacillus are lactobacillus delbruockii subspecies bulgaricus B1 or lactobacillus delbruockii subspecies bulgaricus B2.
  8. 8. a kind of preparation method of ferment, it is characterised in that methods described comprises the following steps:(1) it is former to fruit and/or vegetables The glucose, the water with raw material phase homogenous quantities that material quality percentage is 15~20% are added in material, is stirred;(2) body is pressed Product meter, the saccharomycete and 1~2% gluconacetobacter of inoculation step (1) mixed liquor 0.5~1%, is placed in 35~37 DEG C of cultures, Stirring in every 20~24 hours once, is fermented to the 3rd~4 day, the lactobacillus delbruockii subspecies bulgaricus B1 of inoculation 3~5%, 28~ 30 DEG C of anaerobic cultures, ferment and terminated fermentation to the 12nd~15 day;The saccharomycete, gluconacetobacter and or Lactobacillus delbrueckii protect plus Leah subspecies B1 concentration is 1.0 × 107~9.9 × 109CFU/mL;The lactobacillus is lactobacillus delbruockii subspecies bulgaricus B1, China typical culture collection center is preserved on June 26th, 2017, deposit number is CCTCC M 2017370, is protected Hide address Wuhan, China, Wuhan University.
  9. 9. the food containing claim 4-5, the extract of 7 any ferment or concentrate.
  10. 10. one plant of lactobacillus delbruockii subspecies bulgaricus (Lactobacillus delbrueckii subsp.bulgaricus Strain) B1, it is characterised in that be preserved in China typical culture collection center on June 26th, 2017, deposit number is CCTCC M 2017370, preservation address Wuhan, China, Wuhan University.
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