CN109105713A - A kind of preparation method and system of food preservative - Google Patents
A kind of preparation method and system of food preservative Download PDFInfo
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- CN109105713A CN109105713A CN201810857367.3A CN201810857367A CN109105713A CN 109105713 A CN109105713 A CN 109105713A CN 201810857367 A CN201810857367 A CN 201810857367A CN 109105713 A CN109105713 A CN 109105713A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, 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
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3472—Compounds of undetermined constitution obtained from animals or plants
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Abstract
The invention belongs to antistaling agent fields, disclose the preparation method and system of a kind of food preservative, and the preparation system of food preservative is provided with salt acid compartment, and salt acid compartment has reaction kettle by piping connection；The reaction kettle passes through piping connection sodium chlorite room and mixing chamber；Sodium chlorite room passes through piping connection to mixing chamber；Mixing chamber has surfactant room and finished room by piping connection；Finished room has sodium dihydrogen phosphate room by piping connection, and is equipped with solenoid valve on pipeline between the two；PH detection device is installed in finished room；The pH detection device has control circuit by connection；Control circuit passes through connection to solenoid valve.The present invention prepares the simple process of food preservative, and cost is relatively low, manufactured food preservative robust consistent, safe and non-toxic, can be used for multiple fields.
Description
Technical field
The invention belongs to antistaling agent field more particularly to the preparation methods and system of a kind of food preservative.
Background technique
Currently, the prior art commonly used in the trade is such that
Food preservative refers to for preventing food in storage, the process of circulation, becomes due to caused by microbial reproduction
Matter, or since storage sales terms are not good at, food interior quality occurs deterioration, color decline and extends food to improve storage life
The food additives used in food with value.The aqueous solution of chlorine dioxide of common chlorine dioxide generator production is easy
It decomposes, property is unstable, and concentration is not able to maintain；The food preservative stability that stability chlorine dioxide produces
Very poor, action time does not continue.
Currently, various processed foods are varied, but all there are problems that a fresh-keeping and storage, how to guarantee more
Prolonged quality and flavor, which will not degenerate, solves this problem it is necessary to use different antistaling agents.It selects suitable fresh-keeping
Agent will not only consider Costco Wholesale, fresh-keeping effect, while be also contemplated that its safety, enhance food additives safety this
It is to become a urgent problem.
The seed of Chinese medicine fenugreek system leguminous plant fenugreek (Trigonella foenum-graecum L), You Mingxiang
Bean or pea are the distinguishing products of Xinjiang Uygur Autonomous Regions, as common condiment in civil wheaten food, have long history, point
Cloth is extensive, and commonly a kind of medicinal and edible plants, Uygur medicine think that it has for resourceful and Chinese medicine and Uygur medicine
Consciousness regaining, the effect of promoting longevity.It is sweet, warm-natured with its fruit medicine in traditional medicine, have kidney-replenishing, dispellieg cold and dampness,
The effect of pain that relieves the pain, cures mainly kidney deficiency and trembles with fear, hernia abdominal pain, impotence, the swelling and hanging down of either of the testes, cold and pain in the lower abdomen, the diseases such as disturbance of lower legs due to pathogenic cold and dampness.
Fenugreek seed is made of kind of a skin, endosperm and cotyledon, and mesosperm accounts for the 10%~15% of seed weight, embryo
Cream accounts for the 35%~40% of seed weight, and cotyledon accounts for the 45%~55% of seed weight.Fenugreek is rich in fenugreek cotyledon
The small molecules part group such as oily, protein and saponin(e, flavones, alkaloid, non-protein propylhomoserin.
Mainly contain unsaturated fatty acid in fenugreek oil, accounts for fatty acid total amount 78.91%, wherein linoleic acid plus linolenic acid
Content it is very high, account for 43.60% and 34.72% respectively, and be 78.32%.Unsaturated fatty acid has in reduction blood lipid
Triglycerides and anti-oxidant, free radical resisting, effect antitumor, enhancing is immune, the more higher easier prevention thrombus shape of content
At.Linoleic acid has the function of being similar to vitamin E, can play the role of prevention of arterial and harden.Linoleic acid is required fat
Acid cannot be synthesized in human body, can only be absorbed from food.Therefore the exploitation tool of fenugreek seed oil has very important significance.
The fenugreek oil of purification is rich in unsaturated fatty acid (being higher than 80%), and wherein linoleic acid plus linolenic acid total amount reaches
50% or more.Unsaturated fatty acid have reducing blood lipid, inhibit platelet aggregation, prevent artery sclerosis, is anti-inflammatory, anticancer, enhancing are exempted from
The physiological actions such as epidemic disease function, therefore can be used as health-care oil.
Vegetable protein equal size is 16.97% in fenugreek, is a kind of green, safety health food, can also be used as height
Shelves animal feed.If extracting fenugreek without economic benefit, but by comprehensive utilization only as the processing such as single plant albumen
Albumen can reduce cost, increase economic benefit.
Small molecule part group shows different bioactivity and pharmacological effect because of its structure feature difference, can make
For important medical industry raw material.
Currently, fenugreek is oily, protein and small molecule part group are prepared with two process routes, method one: with Hu Lu
Graecum seed is raw material, is there is crushing, is extracted, and fenugreek powder and fenugreek oil are first isolated, after fenugreek powder passes through extraction again,
Protein is discarded, small molecule part group, last glue obtained combination of fenugreek gum after alcohol precipitation, dry are successively separated.
The shortcomings that method one:
1., since endosperm fraction does not remove first, causing extraction fluid viscosity big using fenugreek seed as raw material, having to be subsequent
The extraction of effect substance brings difficulty.
2. protein is not utilized effectively by as waste material.
3. being finally separating fenugreek gum, the quality of its glue, no economic advantages are influenced.
Method two: using remainder after fenugreek degumming as raw material, being crushed, and is extracted, preparation fenugreek oil, after mentioning oil
Filter residue extracts small molecule part group through acidolysis, and remainder is as animal feed.
The shortcomings that method two:
1. using remainder after degumming as raw material, due to being mixed with endosperm fraction, it is big, easy to reunite to lead to extract system viscosity,
Difficulty is brought to the exploitation of downstream product.
2. fenugreek is oily and protein delivery rate is low and is not utilized effectively.
3. direct acidolysis destroys protein, for remainder as animal feed, mouthfeel is very poor, is not comprehensively utilized,
And water consumption is big, and environmental pressure is big.
With the continuous improvement of living standards and health consciousness be increasingly enhanced, people want sterile products
Ask also higher and higher.In numerous sterile products, forth generation disinfectant based on chlorine dioxide (ClO2), because having
High-efficiency broad spectrum sterilizing ability, nontoxic, noresidue, and it is free from environmental pollution the advantages that, in health care, food processing, guarantor
It has been widely used in the fields such as fresh, drinking water disinfection, cold water process, daily detergent.Through stability titanium dioxide
The chicken of chlorine processing can effectively extend storage period at a temperature of 5 DEG C.It is 40~60ppm stability chlorine dioxide in concentration
In, dipping can efficiently control poultry body microbial contamination in 5 minutes.Prawn is after capture, due to the work of internal tyrosinase
With after 48 hours, the positions, that is, blackening such as shrimp head, abdomen and uropodium so as to cause the blackening of shrimp entirety, is gone bad.But use 40ppm
Stability chlorine dioxide impregnates the prawn of capture 10~20 minutes, then fresh-keeping with the ice cube of 20ppm stability chlorine dioxide,
With regard to obtaining satisfied fresh-keeping effect, it is allowed to keep original color during storing in 7~10 days.Foreign countries will also stablize
Property chlorine dioxide be used for dairy disinfection.Stable type suspension bridge is included in food additives and prevents by China GB-2760 within 1996
Rotten agent, use scope are preserving fruit and vegetable utilizing, fish processing.ClO2 is classified as food processing aid simultaneously by the standard.
The Chlorine dioxide production of market production mainly has two major class: first is that producing chlorine dioxide with chlorine dioxide generator
Aqueous solution, the chlorine dioxide property in the aqueous solution is active, can decompose under the action of room temperature and daylight, property pole is not
Stablize, concentration is not able to maintain, it is necessary to which in place to use now-making-now-using, and first input cost is higher, limits and much answers
Use field.There are also it is a kind of be exactly the usually used stability chlorine dioxide of people, producing principle is by ClO2 gas using inhaling
It receives liquid to absorb, the mixed solution of generation chlorite ion's state (ClO2-), in the mixed liquor and there is no molecular staties
ClO2, and the only precursor containing chlorine dioxide, must be added after acidic activator is activated when in use can just release
Real ClO2 is released, moreover, the chlorine dioxide stability after activation is also very poor, concentration can only also maintain very short time, need
It is ready-to-use, and action time cannot continue, therefore troublesome in poeration, and dangerous, significantly limit making for chlorine dioxide
Use range.
Existing market be badly in need of a kind of top grade, multichannel, highly reliable, centralized management, decentralised control the remote behaviour of intelligence
Make the preparation system of food preservative.Currently, control switch is mostly mechanical switch, switch is distributed scattered, inconvenient, shadow
Ring using effect.It is greatly limited, it is difficult to promote.Also there is small part using radio control technology, though it overcomes above
Disadvantage, but since receiver control number is few, integral installation is more dispersed；Panel button falls behind, and is easy pollution；Remote-transmitter
Device volume is excessive, inconvenient to carry；Control setting is complicated, and adjustment is inconvenient；Control the defects of number is few, and security and stability is poor.
In conclusion problem of the existing technology is:
The aqueous solution of chlorine dioxide of common chlorine dioxide generator production is easily decomposed, and property is unstable, and concentration is not
It is able to maintain；The food preservative stability that stability chlorine dioxide produces is also very poor, and action time does not continue.
Existing mechanical switch is distributed scattered, inconvenient problem.
Fenugreek chemical component mainly has trigonelline, choline, niacinamide etc..Fenugreek tincture and medicinal extract, which are applied, to be eaten
It can inhibit pungent irritation during product are fresh-keeping, cover miscellaneous gas.Relevant report about fenugreek polysaccharide is concentrated mainly at present
Medical aspect, the application in food fresh keeping, has not been reported yet.
Polysaccharide is polymerized by a large amount of monosaccharide, and containing a large amount of hydroxyl, a large amount of hydroxyl can be formed with hydrone
Hydrogen bond, to make polysaccharide that there is stronger moisture holding capacity.
Currently, in China's food preservative industry in order to maintain preservation, the moisture content in transport, mainly using propylene glycol and
The polyhydroxy substances such as sorbierite are antistaling agent, but maintenance of the existing antistaling agent for food fresh keeping product moisture content, improvement
It is not satisfactory.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of preparation method of food preservative and systems.
The invention is realized in this way a kind of preparation method of the fenugreek seed extract extracted from plant fenugreek, packet
It includes:
Prepare fenugreek seed crude oil: the smashed fenugreek seed powder of pulverizer of learning from else's experience, stone under 70-90 DEG C of constant temperature and pressure
Oily ether extracts 2-4 hour, filters extract, and filter residue is extracted with petroleum ether secondary again respectively, merges extracting solution three times, first time
Filter residue otherwise processed；Extracting solution concentration and recovery solvent, obtains fenugreek seed crude oil；Multistage filtering is carried out, fenugreek seed essence is obtained
Oil, it is spare；
The preparation of FLB total sponin extract:
The first step, the ethanol water application infusion process for being first 40% to 95% through concentration by the dry coarse powder of fenugreek
Or after percolation or circumfluence method are extracted, recycling ethyl alcohol obtains liquid extract；
Second step, liquid extract is diluted with water 3 to 6 times after in suspension, and contacted with moderately polar macroreticular resin,
Using resin adsorption, when the FLB total sponin content in the suspension after absorption is lower than 1%, by the suspension after absorption
It is separated with the macroreticular resin for being adsorbed with fenugreek seed extract；
Third step is washed with the aqueous solution that the pH value adjusted by inorganic base is 7.5 to 13.0 and is adsorbed with fenugreek seed extract
Macroreticular resin, when in cleaning solution containing 0.1% to 1% FLB total sponin stop washing；Then absorption is washed with water
There is the macroreticular resin of fenugreek seed extract, until the pH value of efflux stops washing when close neutral；
4th step, with can be big after the eluent parsing washing of FLB total sponin of the Dissociative adsorption on macroreticular resin
Hole resin, using resin adsorption, resolution temperature is room temperature to 50 DEG C；
5th step, parsing FLB total sponin after eluent it is concentrated, vacuum drying after both FLB total sponin mention
Object is taken, drying temperature is room temperature to 60 DEG C；It is spare；
The preparation of fenugreek crude polysaccharide extract:
A, it crushes: weighed fenugreek is ground into the fenugreek powder of 30~80 mesh；
B, homogenate extraction: the fenugreek powder that step a is obtained is added in flash extracter, and fenugreek silty amount is added
20~40 times of distilled water, is then extracted using flash extracter, and first time extracting solution is obtained；
C, it is centrifugated: the first time extracting solution that step b is obtained being centrifuged, is obtained on first time after centrifugation
Clear liquid；
D, it extracts residue obtained after step c centrifugation, be centrifugated once again according to above-mentioned steps b, c method, obtain the
Secondary supernatant merges gained supernatant twice；
E, flash concentration: the supernatant that step d is obtained is concentrated using flash inspissator, is concentrated after concentration
Liquid；
F, ethanol precipitation: it is 50~90% that dehydrated alcohol to system concentration of alcohol is added in the concentrate that step e is obtained
Alcohol precipitation is carried out, stands 20~36h under the conditions of 4 DEG C；Then 10~25min is centrifuged at 8000~12000r/min, after centrifugation
To fenugreek Thick many candies；
G, the water that 3~6 times of quality are added in the fenugreek Thick many candies that step f is obtained is dissolved, it is slightly more obtains fenugreek
Sugar aqueous solution, using Sevage method deproteination matter, the fenugreek polysaccharide solution after deproteination matter according to step e, f successively
Carry out flash concentration, alcohol precipitation, be then allowed to stand centrifuging and taking its precipitating, gained precipitating by freeze-drying obtain purification fenugreek it is more
Sugar；It is spare；
Mixing: the fenugreek seed essential oil, FLB total sponin extract, fenugreek crude polysaccharide extract of preparation are pressed into matter
Amount is mixed than 5:1:1, obtains fenugreek seed extract.
Further, moderately polar macroreticular resin is the middle polarity containing ester group or cyano of styrene type copolymer
Resin is adsorbed, structure is macroreticular structure；
Eluent be polar organic solvent aqueous solution miscible with water, aqueous ph value be 5.0 to 9.5, organic solvent with
The volume ratio of water is 10: 70~80: 10.
Further, extraction conditions in step b are as follows: temperature be 50~80 DEG C, 2 are extracted under 15000~20000r/min~
4min；
The condition being centrifugated in step c are as follows: under the conditions of 2~4 DEG C, 8000~10000r/min be centrifuged 10~
35min；
Condition when being concentrated in step e are as follows: vacuum degree is 0.06~0.095MPa, and temperature is 60 DEG C~85 DEG C, when concentration
Between be 20~35s.
The fenugreek seed extract extracted from plant fenugreek is utilized another object of the present invention is to provide a kind of
Preparation method preparation food preservative.
Another object of the present invention is to provide a kind of preparation method of food preservative, the system of the food preservative
Preparation Method includes:
1) under conditions of 50-65 DEG C, by fenugreek seed extract, potassium sorbate, D-sorbite, amino acid, chitin,
Sodium salt, citric acid, the food grade surfactant containing 1.5~5.8wt% are added to concentration the two of 30mg/L~600mg/L
It in chlorine monoxid aqueous solution and the pH adjusting agent and metal chlorite that are dissolved in aqueous solution of chlorine dioxide, and stirs and evenly mixs, obtains
Mixed solution；
2) Extracted From Oil-tea-cake extract extracts: being extracted, is filtered to Extracted From Oil-tea-cake at 70~95 DEG C with ethanol solution, collected
Filtrate obtains extracting solution, and extracting solution obtains Extracted From Oil-tea-cake extract through evaporating solvent, drying；
3) mixed solution obtained in step 1) is cooled to 20-30 DEG C, bacteriostatic agent, biological preservative, oil is then added
Tea seed cake extract, stirs and evenly mixs, and obtains food preservative.
Further, the pH adjusting agent controls the aqueous solution and keeps acid, and pH adjusting agent and metal chlorite contain
Amount should sufficiently achieve within the time of a year and a half, and order is reacted by metal chlorite with the hydrogen ion of pH adjusting agent slow release
The amount of generated chlorine dioxide is equal to the chlorine dioxide by gradually volatilizing in the aqueous solution；
The pH adjusting agent uses food grade phosphoric acid sodium dihydrogen, and metal chlorite uses sodium chlorite；
The sodium salt is sodium chloride；
The bacteriostatic agent is nucleoprotamine.
Further, the biological preservative is Rosmarinic acid.
The food grade surfactant uses food grade sucrose aliphatic ester；
The food preservative also includes the defoaming agent of 1~4.5wt%, and the defoaming agent uses silicone resin.
Further, aqueous solution of chlorine dioxide and be dissolved in aqueous solution of chlorine dioxide the preparation method comprises the following steps:
The pH value of previously prepared aqueous solution of chlorine dioxide is adjusted to neutrality, then be added into the aqueous solution of chlorine dioxide
Phosphorus is added in the aqueous solution of chlorine dioxide backward in sodium chlorite or its aqueous solution, food grade surfactant and defoaming agent
Acid dihydride sodium or its aqueous solution, until finished product food preservative is formed, contained sodium dihydrogen phosphate and chlorous acid in the food preservative
The amount of sodium, which should sufficiently achieve to enable within the time of a year and a half, is reacted by sodium chlorite with the hydrogen ion of sodium dihydrogen phosphate slow release
The amount of generated chlorine dioxide is approximately equal to the chlorine dioxide by gradually volatilizing in the aqueous solution；
After sodium dihydrogen phosphate is added into aqueous solution of chlorine dioxide, aqueous solution of chlorine dioxide is stablized into 2h, is surveyed thereafter
The pH value of the fixed aqueous solution of chlorine dioxide and the amount of contained chlorine dioxide, if the pH value of aqueous solution of chlorine dioxide not 5.5 ±
In the range of 0.9 and/or the concentration of contained chlorine dioxide is more than 600mg/L, then repeats to add into the aqueous solution of chlorine dioxide
Sodium dihydrogen phosphate or aqueous solution, until pH value=5.5 ± 0.9 of aqueous solution of chlorine dioxide.
Further, the amino acid is alanine and/or tyrosine；
Extracted many times are carried out to Extracted From Oil-tea-cake with ethanol solution, are filtered, filtrate merges to obtain extracting solution；
Re-evaporation solvent after decolourizing to the extracting solution；
The time that ethanol solution extracts Extracted From Oil-tea-cake is 2.5~4h.
Another object of the present invention is to provide a kind of food preservative is composed of the following components by weight；Fenugreek
2~6 parts of extract, 2~5 parts of Extracted From Oil-tea-cake extract, 0.25~1.0 part of potassium sorbate, D-sorbite are 2~3 parts, amino acid 1
~3 parts, 0.5~1 part of chitin, 0.5~2 part of sodium salt, 0.5~1.0 part of citric acid, 0.2~0.5 part of bacteriostatic agent, biological antiseptic
0.1~0.5 part of agent, 0.1~0.5 part of the food grade surfactant containing 1.5~5.8wt%, concentration are in 30mg/L~600mg/
50~60 parts of the aqueous solution of chlorine dioxide of L and 1~2 part of the pH adjusting agent and metal chlorous acid being dissolved in aqueous solution of chlorine dioxide
1~3 part of salt.
Another object of the present invention is to provide a kind of preparation systems of food preservative to be provided with
Salt acid compartment；
Salt acid compartment has reaction kettle by piping connection；
Reaction kettle passes through piping connection sodium chlorite room and mixing chamber；
Sodium chlorite room passes through piping connection to mixing chamber；
Mixing chamber has surfactant room and finished room by piping connection；
Finished room has sodium dihydrogen phosphate room by piping connection, installs on the pipeline that finished room, sodium dihydrogen phosphate room connect
There is solenoid valve；
PH detection device is installed in finished room；
PH detection device has control circuit by connection；
Control circuit passes through connection to solenoid valve；
Liquid pH value in the mixing chamber is neutral；
The pH value 5.5 ± 0.9 of liquid in the finished room.
In conclusion advantages of the present invention and good effect are as follows:
The present invention prepares the simple process of food preservative, and cost is relatively low, and manufactured food preservative performance stabilization is held
Long, safe and non-toxic, it can be used for multiple fields.
In order to adapt to the thought that people advocate nature, health, the food preservative of development and application highly effective and safe, which has become, works as
This life circle food preservative important field of research.It is confirmed according to relevant information, it is natural to protect in the food of people's long-term consumption
The toxicity of fresh dose of ingredient is well below artificial synthesized antistaling agent.Therefore, drawn from the research that nature seeks crude antistaling agent
Play the great attention of scientists from all over the world.A large amount of crude antistaling agent products of various countries' exploitation, the popular welcome by people.
Extracted From Oil-tea-cake extract is a kind of substance extracted from Extracted From Oil-tea-cake, and property safe to the human body is high, wherein being rich in: table does not have
Infanticide catechin, Epigallo-catechin gallate (EGCG), L-Epicatechin gallate, catechin and Tea Saponin.These objects
Matter has preferable antioxygenic property and stronger antibacterial characteristics.Research has shown that, distinctive oil tea Tea Saponin it is appropriate using pair
Many microorganisms have stronger bacteriostasis property, and property safe to the human body is higher.
Many food preservatives are extracted from chemical synthesis or in the root, stem, leaf of plant at present, and directly benefit
Natural food preservative is prepared with a variety of active ingredients in agriculture and forestry organic waste material and does not see relevant report also, these are mainly
The complexity of complexity and extract component based on extraction process leads to the raising of cost.The present invention utilizes Extracted From Oil-tea-cake for the first time, warp
The efficient acquisition active constituent of simple and effective extraction process is crossed, to prepare food preservative.
Food preservative of the invention is extracted the low natural active matter of toxicity from agriculture and forestry organic waste material, will not be in people
Body generates chemical residual, will not generate harm to human health, manufacture craft is simple, and production cost is appropriate.The present invention utilizes oil
Tea seed cake water extract prepares food preservative, and it is convenient to prepare, and significant effect is non-toxic, meets the regulation of food safety.
Food preservative good antimicrobial effect of the invention, raw material are easy to get；The food preservative simple production process, condition
Mildly, easy to operate, it is at low cost；Food preservative is safe, it is of good preservation effect, effectively extend the shelf life, eaten especially for protide
Product, it is applied widely.
Invention enhances the ranges to signal collection；Protector is set, data protection safety is improved；Again it opens
Machine will not lose related data, compared with existing mechanical switch, be more convenient, be more intelligent.
The present invention extracts fenugreek polysaccharide, can shorten extraction time, improves recovery rate；
Extraction process of the present invention is easy, and equipment operation is low with maintenance cost, be conducive to keep the structural intergrity of polysaccharide with
Bioactivity；
The present invention uses Sevage method isolating protein, obtains higher degree polysaccharide, and whole process mild condition uses
Raw materials and reagents it is cheap and easy to get, it is easy to operate, and be convenient for fairly large production；
It was proved that fenugreek polysaccharide of the present invention is obvious (being detailed in attached drawing 2,3) to the humectation effect of food.
Fenugreek seed essential oil prepared by the present invention, FLB total sponin extract, fenugreek crude polysaccharide extract are carrying out
While food fresh keeping, and food are beneficial to human body component and provide auxiliary to guarantee and for health care provide advantage more.
Detailed description of the invention
Fig. 1 is the preparation system schematic diagram of food preservative provided in an embodiment of the present invention.
In figure: 1, salt acid compartment；2, sodium chlorite room；3, reaction kettle；4, surfactant room；5, mixing chamber；6, finished product
Room；7, PH detection device；8, control circuit；9, sodium dihydrogen phosphate room；10, solenoid valve.
Fenugreek polysaccharide obtained by the present invention, propylene glycol and water are added be applied in food respectively by Fig. 2, in low moisture environments
Lower food water-cut trend figure.
Fenugreek polysaccharide obtained by the present invention, propylene glycol and water are added be applied in food respectively by Fig. 3, in high humidity environment
Lower food water-cut trend figure.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached
Detailed description are as follows for figure.
As shown in Figure 1, the preparation system of food preservative provided in an embodiment of the present invention according to, comprising:
Salt acid compartment 1；2 reaction kettle of sodium chlorite room, surfactant room 4, mixing chamber 5, finished room 6, pH detection device 7,
Control circuit 8, sodium dihydrogen phosphate room 9, solenoid valve 10.
Salt acid compartment 1 has reaction kettle 3 by piping connection；The reaction kettle 3 is by piping connection sodium chlorite room 2 and mixes
Close room 5；The sodium chlorite room 2 passes through piping connection to mixing chamber 5；The mixing chamber 5 has surface-active by piping connection
Agent room 4 and finished room 6；The finished room 6 has sodium dihydrogen phosphate room 9 by piping connection, and installs on pipeline between the two
There is solenoid valve 10；PH detection device 7 is installed in the finished room 6；The pH detection device 7 has control by connection
Circuit 8；The control circuit 8 passes through connection to solenoid valve 10.
The present invention reacts the liquid in salt acid compartment 1 and sodium chlorite room 2 in reaction kettle 3, and in mixing chamber 5
Middle its pH value of adjusting is about neutrality.Again from taking sodium chlorite to be added in mixing chamber 5 in sodium chlorite room 2, it is mixed to get water-soluble
Liquid.Surfactant and defoaming agent in surfactant room 4 are added in mixing chamber 5, mixed liquor is then passed through into pipeline
It is sent into finished room 6.PH detection device detects the pH value of liquid in finished room 6, if pH value is just controlled not in the range of requiring
Solenoid valve 10 processed is opened, and enters the sodium dihydrogen phosphate in sodium dihydrogen phosphate room in finished room.PH detection device detects pH simultaneously
The variation of value, when meeting the requirements, control circuit 8, which just controls, closes solenoid valve 10.
Below with reference to concrete analysis, the invention will be further described.
Control circuit of the invention includes rectifier, protector, filter；The rectifier is arranged in current control
The upper end of unit, the protector are connected between rectifier and filter；The filter is arranged under rectifier
Side；
It includes three-phase diode bridge, converter and controller that the rectification implement body, which uses, and controller is whole for obtaining
The input voltage, input current, the output voltage that flow device conversion section obtains the amplitude and 6 times of power frequencies of desired alternating current
Sinusoidal voltage, rectifier means pass through at its upper end and radiator, transformer part of lower end respectively, pass through two
Mounting base is fixed in protection shell, and filter part is fixed on a heat sink, and rectifier means pass through busbar and transformer
Component connection has the radiator fan being fixed in protection shell left side plate, in transformer part on the left of rectifier means
There are the terminal box being fixed in protection shell right end plate and electric connector in right side, is fixed with temperature sensor, left end on radiator
The surface of plate is fixed with fan mounting base；
The protector mainly includes mosaic piece, protector main body and shielding cover, mosaic piece have it is substantially tubular, with
At least one bellows that at least partly covering is held in the electric wire between mosaic piece is kept, mosaic piece includes one
A or two ribs, bellowss, a pair of of rib include upright end；Upright end be curved to it is close to each other along the groove of bellows, if
One or more supporting shaft portions that axis extends along the longitudinal direction of mosaic piece are set, the cardinal extremity of the upright end of rib is set
At or near and/or rib it is mutually continuous by the peripheral wall of supporting shaft portion and one or two mosaic piece, mosaic piece can be with
At least one bellows being mounted on harness engages, and installation groove, expansion plate, engagement legs and elasticity is arranged in mosaic piece
Plate, expansion plate have basic square, and engagement legs include at least one protrusion, when expansion plate is at least partially inserted into appearance
When receiving in part, it can mutually cooperate with expansion plate and sandwich guide plate, multiple protruding portion point mutually cooperates with expansion plate and sandwiched
Guide plate, elastic plate extend at the interior location of mosaic piece substantially along the peripheral surface of mosaic piece, and the surface of elastic plate is set
The outer surface for being equipped with surface outstanding and branch portion flushes protector main body with mosaic piece, bottom wall, spaced walls each other substantially
Become a pair of upstanding wall relative to each other with erectting from the bottom wall, the inner surface of bottom wall and the inner surface of a pair of upstanding wall are formed
Accommodating groove is accommodated with one or more cable in accommodating groove, and shielding cover is engaged with protector main body to cover accommodating groove,
Protector main body also has protuberant bar, and protuberant bar is prominent from the inner surface of bottom wall towards shielding cover, is formed in the pair of vertical wall
Between so as to along direction extension intersect with a pair of upstanding wall, side between each of protuberant bar and a pair of upstanding wall
In boundary part, protuberant bar is extended across the inner surface of bottom wall, the cloth of discharge direction and one or more cable in discharge direction
Set direction and intersect perpendicular to each of the direction of cloth set direction direction, spaced walls are erect from bottom wall, and are arranged in institute
State between a pair of upstanding wall, it is opposite with a pair of upstanding wall, protuberant bar have a vertical wall being formed in a pair of upstanding wall with
Second between the first protuberant bar and another vertical wall being formed in a pair of upstanding wall and spaced walls between spaced walls is prominent
Item is played, in each of first protuberant bar boundary part adjacent with a vertical wall and the first protuberant bar and spaced walls phase
In adjacent boundary part.
Liquid pH value in the mixing chamber is neutral.
The pH value 5.5 ± 0.9 of liquid in the finished room.
Below with reference to concrete analysis, the invention will be further described.
The preparation method of the fenugreek seed extract provided in an embodiment of the present invention extracted from plant fenugreek, comprising:
Prepare fenugreek seed crude oil: the smashed fenugreek seed powder of pulverizer of learning from else's experience, stone under 70-90 DEG C of constant temperature and pressure
Oily ether extracts 2-4 hour, filters extract, and filter residue is extracted with petroleum ether secondary again respectively, merges extracting solution three times, first time
Filter residue otherwise processed；Extracting solution concentration and recovery solvent, obtains fenugreek seed crude oil；Multistage filtering is carried out, fenugreek seed essence is obtained
Oil, it is spare；
The preparation of FLB total sponin extract:
The first step, the ethanol water application infusion process for being first 40% to 95% through concentration by the dry coarse powder of fenugreek
Or after percolation or circumfluence method are extracted, recycling ethyl alcohol obtains liquid extract；
Second step, liquid extract is diluted with water 3 to 6 times after in suspension, and contacted with moderately polar macroreticular resin,
Using resin adsorption, when the FLB total sponin content in the suspension after absorption is lower than 1%, by the suspension after absorption
It is separated with the macroreticular resin for being adsorbed with fenugreek seed extract；
Third step is washed with the aqueous solution that the pH value adjusted by inorganic base is 7.5 to 13.0 and is adsorbed with fenugreek seed extract
Macroreticular resin, when in cleaning solution containing 0.1% to 1% FLB total sponin stop washing；Then absorption is washed with water
There is the macroreticular resin of fenugreek seed extract, until the pH value of efflux stops washing when close neutral；
4th step, with can be big after the eluent parsing washing of FLB total sponin of the Dissociative adsorption on macroreticular resin
Hole resin, using resin adsorption, resolution temperature is room temperature to 50 DEG C；
5th step, parsing FLB total sponin after eluent it is concentrated, vacuum drying after both FLB total sponin mention
Object is taken, drying temperature is room temperature to 60 DEG C；It is spare；
The preparation of fenugreek crude polysaccharide extract:
A, it crushes: weighed fenugreek is ground into the fenugreek powder of 30~80 mesh；
B, homogenate extraction: the fenugreek powder that step a is obtained is added in flash extracter, and fenugreek silty amount is added
20~40 times of distilled water, is then extracted using flash extracter, and first time extracting solution is obtained；
C, it is centrifugated: the first time extracting solution that step b is obtained being centrifuged, is obtained on first time after centrifugation
Clear liquid；
D, it extracts residue obtained after step c centrifugation, be centrifugated once again according to above-mentioned steps b, c method, obtain the
Secondary supernatant merges gained supernatant twice；
E, flash concentration: the supernatant that step d is obtained is concentrated using flash inspissator, is concentrated after concentration
Liquid；
F, ethanol precipitation: it is 50~90% that dehydrated alcohol to system concentration of alcohol is added in the concentrate that step e is obtained
Alcohol precipitation is carried out, stands 20~36h under the conditions of 4 DEG C；Then 10~25min is centrifuged at 8000~12000r/min, after centrifugation
To fenugreek Thick many candies；
G, the water that 3~6 times of quality are added in the fenugreek Thick many candies that step f is obtained is dissolved, it is slightly more obtains fenugreek
Sugar aqueous solution, using Sevage method deproteination matter, the fenugreek polysaccharide solution after deproteination matter according to step e, f successively
Carry out flash concentration, alcohol precipitation, be then allowed to stand centrifuging and taking its precipitating, gained precipitating by freeze-drying obtain purification fenugreek it is more
Sugar；It is spare；
Mixing: the fenugreek seed essential oil, FLB total sponin extract, fenugreek crude polysaccharide extract of preparation are pressed into matter
Amount is mixed than 5:1:1, obtains fenugreek seed extract.
Moderately polar macroreticular resin is that adsorbing containing the middle polarity of ester group or cyano for styrene type copolymer is set
Rouge, structure are macroreticular structure；
Eluent be polar organic solvent aqueous solution miscible with water, aqueous ph value be 5.0 to 9.5, organic solvent with
The volume ratio of water is 10: 70~80: 10.
Extraction conditions in step b are as follows: be 50~80 DEG C, extract 2~4min under 15000~20000r/min in temperature；
The condition being centrifugated in step c are as follows: under the conditions of 2~4 DEG C, 8000~10000r/min be centrifuged 10~
35min；
Condition when being concentrated in step e are as follows: vacuum degree is 0.06~0.095MPa, and temperature is 60 DEG C~85 DEG C, when concentration
Between be 20~35s.
The preparation method that the embodiment of the present invention provides a kind of food preservative includes:
1) under conditions of 50-65 DEG C, by fenugreek seed extract, potassium sorbate, D-sorbite, amino acid, chitin,
Sodium salt, citric acid, the food grade surfactant containing 1.5~5.8wt% are added to concentration in the dioxy of 30mg/L~600mg/L
Change in chlorine water solution and the pH adjusting agent and metal chlorite that are dissolved in aqueous solution of chlorine dioxide, and stir and evenly mix, is mixed
Close solution；
2) Extracted From Oil-tea-cake extract extracts: being extracted, is filtered to Extracted From Oil-tea-cake at 70~95 DEG C with ethanol solution, collected
Filtrate obtains extracting solution, and extracting solution obtains Extracted From Oil-tea-cake extract through evaporating solvent, drying.
3) mixed solution obtained in step 1) is cooled to 20-30 DEG C, bacteriostatic agent, biological preservative, oil is then added
Tea seed cake extract, stirs and evenly mixs, and obtains food preservative.
The pH adjusting agent controls the aqueous solution and keeps acid, and the content of pH adjusting agent and metal chlorite should foot
To reach within the time of a year and a half, order, which is reacted by metal chlorite with the hydrogen ion of pH adjusting agent slow release, to be generated
The amount of chlorine dioxide is equal to the chlorine dioxide by gradually volatilizing in the aqueous solution；
The pH adjusting agent uses food grade phosphoric acid sodium dihydrogen, and metal chlorite uses sodium chlorite；
The sodium salt is sodium chloride；
The bacteriostatic agent is nucleoprotamine.
The biological preservative is Rosmarinic acid.
The food grade surfactant uses food grade sucrose aliphatic ester；
The food preservative also includes the defoaming agent of 1~4.5wt%, and the defoaming agent uses silicone resin.
Aqueous solution of chlorine dioxide and be dissolved in aqueous solution of chlorine dioxide the preparation method comprises the following steps:
The pH value of previously prepared aqueous solution of chlorine dioxide is adjusted to neutrality, then be added into the aqueous solution of chlorine dioxide
Phosphorus is added in the aqueous solution of chlorine dioxide backward in sodium chlorite or its aqueous solution, food grade surfactant and defoaming agent
Acid dihydride sodium or its aqueous solution, until finished product food preservative is formed, contained sodium dihydrogen phosphate and chlorous acid in the food preservative
The amount of sodium, which should sufficiently achieve to enable within the time of a year and a half, is reacted by sodium chlorite with the hydrogen ion of sodium dihydrogen phosphate slow release
The amount of generated chlorine dioxide is approximately equal to the chlorine dioxide by gradually volatilizing in the aqueous solution；
After sodium dihydrogen phosphate is added into aqueous solution of chlorine dioxide, aqueous solution of chlorine dioxide is stablized into 2h, is surveyed thereafter
The pH value of the fixed aqueous solution of chlorine dioxide and the amount of contained chlorine dioxide, if the pH value of aqueous solution of chlorine dioxide not 5.5 ±
In the range of 0.9 and/or the concentration of contained chlorine dioxide is more than 600mg/L, then repeats to add into the aqueous solution of chlorine dioxide
Sodium dihydrogen phosphate or aqueous solution, until pH value=5.5 ± 0.9 of aqueous solution of chlorine dioxide.
The amino acid is alanine and/or tyrosine；
Extracted many times are carried out to Extracted From Oil-tea-cake with ethanol solution, are filtered, filtrate merges to obtain extracting solution；
Re-evaporation solvent after decolourizing to the extracting solution；
The time that ethanol solution extracts Extracted From Oil-tea-cake is 2.5~4h.
It is composed of the following components by weight that the embodiment of the present invention provides a kind of food preservative；Fenugreek seed extract 2~
6 parts, 2~5 parts of tea seed cake extract, 0.25~1.0 part of potassium sorbate, D-sorbite be 2~3 parts, amino acid 1~3 part, crust
Plain 0.5~1 part, 0.5~2 part of sodium salt, 0.5~1.0 part of citric acid, 0.2~0.5 part of bacteriostatic agent, biological preservative 0.1~0.5
Part, 0.1~0.5 part of the food grade surfactant containing 1.5~5.8wt%, concentration 30mg/L~600mg/L titanium dioxide
50~60 parts of chlorine water solution and 1~2 part of pH adjusting agent being dissolved in aqueous solution of chlorine dioxide and 1~3 part of metal chlorite.
The invention will be further described combined with specific embodiments below.
Embodiment 1
It is composed of the following components by weight that the embodiment of the present invention provides a kind of food preservative；Fenugreek seed extract 2
Part, 4 parts of Extracted From Oil-tea-cake extract, 0.55 part of potassium sorbate, D-sorbite are 2.5 parts, 2 parts of amino acid, 0.75 part of chitin, sodium
0.5~2 part of salt, 0.5~1.0 part of citric acid, 0.2~0.5 part of bacteriostatic agent, 0.1~0.5 part of biological preservative, containing 1.5~
0.1~0.5 part of the food grade surfactant of 5.8wt%, concentration 30mg/L~600mg/L aqueous solution of chlorine dioxide 50
~60 parts and 1~2 part of pH adjusting agent being dissolved in aqueous solution of chlorine dioxide and 1~3 part of metal chlorite.
Embodiment 2
It is composed of the following components by weight that the embodiment of the present invention provides a kind of food preservative；Fenugreek seed extract 6
Part, 2 parts of Extracted From Oil-tea-cake extract, 0.25 part of potassium sorbate, D-sorbite are 2 parts, amino acid 1 part, 0.5 part of chitin, sodium salt
0.5~2 part, 0.5~1.0 part of citric acid, 0.2~0.5 part of bacteriostatic agent, 0.1~0.5 part of biological preservative, containing 1.5~
0.1~0.5 part of the food grade surfactant of 5.8wt%, concentration 30mg/L~600mg/L aqueous solution of chlorine dioxide 50
~60 parts and 1~2 part of pH adjusting agent being dissolved in aqueous solution of chlorine dioxide and 1~3 part of metal chlorite.
Embodiment 3
It is composed of the following components by weight that the embodiment of the present invention provides a kind of food preservative；Fenugreek seed extract 4
Part, 5 parts of Extracted From Oil-tea-cake extract, 1.0 parts of potassium sorbate, D-sorbite be 3 parts, 3 parts of amino acid, 1 part of chitin, sodium salt 0.5~
2 parts, 0.5~1.0 part of citric acid, 0.2~0.5 part of bacteriostatic agent, 0.1~0.5 part of biological preservative, containing 1.5~5.8wt%'s
0.1~0.5 part of food grade surfactant, concentration are in 50~60 parts of the aqueous solution of chlorine dioxide of 30mg/L~600mg/L and molten
1~2 part of pH adjusting agent in aqueous solution of chlorine dioxide and 1~3 part of metal chlorite.
Below with reference to concrete analysis, the invention will be further described.
Fenugreek polysaccharide obtained by the present invention, propylene glycol and water are added be applied in food respectively by Fig. 2, in low moisture environments
Lower food water-cut trend figure.
Fenugreek polysaccharide obtained by the present invention, propylene glycol and water are added be applied in food respectively by Fig. 3, in high humidity environment
Lower food water-cut trend figure.
The test of physics humid keeping performance:
It is to investigate fenugreek polysaccharide to the physics humid keeping performance of food, the fenugreek polysaccharide that the present invention is extracted and the third two
Alcohol, water carry out physics humid keeping performance contrast test respectively.It weighs suitable food to be placed in pallet, being put into temperature is (22 ± 1)
DEG C, humidity be (60 ± 2) % climatic chamber in balance 96h, weigh a certain amount of fenugreek polysaccharide of the present invention and propylene glycol
The aqueous solution that mass fraction is 5% is prepared respectively, is applied on blank food by spray pattern, it is placed in temperature together
Degree is (22 ± 1) DEG C, the low moisture environments that humidity is (40 ± 2) % and temperature are (22 ± 1) DEG C, the height that humidity is (80 ± 2) %
In wet environment.As the result is shown: fenugreek polysaccharide of the present invention as humectant envionmental humidity it is lower [humidity be (40 ±
2) %] in the environment of, propylene glycol (being detailed in attached drawing 2) is better than to the moisture-retaining capacity of food；In ambient humidity, higher [humidity is
(80 ± 2) %] in the environment of, the food water increasing degree for adding fenugreek polysaccharide humectant of the present invention, which is less than, adds the third two
Alcohol sample (is detailed in attached drawing 3), shows that fenugreek polysaccharide has the dampproof effect under high humidity environment.
2, sense organ humid keeping performance is tested:
It makes even the Henan after weighing apparatus [temperature is (22 ± 1) DEG C, relative humidity is (60% ± 2%), balance 96h], Shandong
Each several pieces of C3F thin material food are prepared fenugreek polysaccharide of the present invention using 20% ethanol water (volume ratio) as solvent
The solution for being 1% at mass fraction, takes 0.100g, 0.500g, 1.000g, 5.000g, 10.000g, 20.000g above-mentioned respectively
Solution, uniformly spray is added in the six parts of Henan 100g C3F single-tobacco-typed cigarettes and the C3F single-tobacco-typed cigarette food in six parts of Shandong 100g respectively, with food
After product device rolls into food, it is placed in temperature and is (22 ± 1) DEG C, balances 96h in the climatic chamber that humidity is (60 ± 2) %, comment
It inhales.Not add the blank food of sugar juice as control, control cigarette sample equally temperature be (22 ± 1) DEG C, humidity for (60 ±
2) 96h is balanced in the climatic chamber of %.
As the result is shown: fenugreek polysaccharide of the present invention, which is embodied in the main function of food, makes food become mellow and full soft, increases
Qiang Huitian sense, promotes comfortable taste degree, reduces miscellaneous gas and irritation etc.；When additive amount is smaller, effect is unobvious,
The phenomenon that smoking result is preferable when additive amount is reached 0.05~1 ‰, will appear spine sense increase more than 1 ‰.Therefore, originally
The fenugreek polysaccharide that invention is extracted is as humectant in application, the additive amount that polysaccharide is suitable for is food quality in food
0.005~0.1%.
The above is only the preferred embodiments of the present invention, and is not intended to limit the present invention in any form,
Any simple modification made to the above embodiment according to the technical essence of the invention, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (10)
1. a kind of preparation method of the fenugreek seed extract extracted from plant fenugreek, which is characterized in that described from plant Hu
The preparation method of fenugreek seed extract that Lu Bazhong is extracted includes:
Prepare fenugreek seed crude oil: the smashed fenugreek seed powder of pulverizer of learning from else's experience, petroleum ether mentions under 70-90 DEG C of constant temperature and pressure
It takes 2-4 hours, filters extract, filter residue is extracted with petroleum ether secondary again respectively, merges extracting solution three times, first time filter residue is separately
Processing；Extracting solution concentration and recovery solvent, obtains fenugreek seed crude oil；Multistage filtering is carried out, fenugreek seed essential oil is obtained, it is spare；
The preparation of FLB total sponin extract:
The first step, ethanol water application infusion process or diacolation first by the dry coarse powder of fenugreek through concentration for 40% to 95%
After method or circumfluence method are extracted, recycling ethyl alcohol obtains liquid extract；
Second step, liquid extract is diluted with water 3 to 6 times after in suspension, and contacted with moderately polar macroreticular resin, using tree
Rouge absorption, when the FLB total sponin content in the suspension after absorption be lower than 1% when, by after absorption suspension be adsorbed with
The macroreticular resin of fenugreek seed extract separates；
Third step is washed with the aqueous solution that the pH value adjusted by inorganic base is 7.5 to 13.0 and is adsorbed with the big of fenugreek seed extract
Hole resin stops washing when in cleaning solution containing 0.1% to 1% FLB total sponin；Then it is washed with water and is adsorbed with recklessly
The macroreticular resin of reed bar extract, until the pH value of efflux stops washing when close neutral；
4th step, with can macropore tree after the eluent parsing washing of FLB total sponin of the Dissociative adsorption on macroreticular resin
Rouge, using resin adsorption, resolution temperature is room temperature to 50 DEG C；
5th step, parsing FLB total sponin after eluent it is concentrated, vacuum drying after both FLB total sponin extract,
Drying temperature is room temperature to 60 DEG C；It is spare；
The preparation of fenugreek crude polysaccharide extract:
A, it crushes: weighed fenugreek is ground into the fenugreek powder of 30~80 mesh；
B, homogenate extraction: the fenugreek powder that step a is obtained is added in flash extracter, and fenugreek silty amount 20~40 is added
Distilled water again, is then extracted using flash extracter, obtains first time extracting solution；
C, it is centrifugated: the first time extracting solution that step b is obtained being centrifuged, first time supernatant is obtained after centrifugation；
D, residue obtained after being centrifuged step c to extract, be centrifugated once again according to above-mentioned steps b, c method, it obtains second
Supernatant merges gained supernatant twice；
E, flash concentration: the supernatant that step d is obtained is concentrated using flash inspissator, concentrate is obtained after concentration；
F, ethanol precipitation: it is 50~90% progress that dehydrated alcohol to system concentration of alcohol is added in the concentrate that step e is obtained
Alcohol precipitation stands 20~36h under the conditions of 4 DEG C；Then it is centrifuged 10~25min at 8000~12000r/min, is obtained after centrifugation recklessly
Reed bar Thick many candies；
G, the water that 3~6 times of quality are added in the fenugreek Thick many candies that step f is obtained is dissolved, obtains fenugreek Thick many candies water
Solution, using Sevage method deproteination matter, the fenugreek polysaccharide solution after deproteination matter is successively dodged according to step e, f
Formula concentration, alcohol precipitation, are then allowed to stand its precipitating of centrifuging and taking, and gained precipitating obtains purification fenugreek polysaccharide by freeze-drying；It is spare；
Mixing: by the fenugreek seed essential oil of preparation, FLB total sponin extract, fenugreek crude polysaccharide extract in mass ratio 5:
1:1 is mixed, and obtains fenugreek seed extract.
2. the preparation method of the fenugreek seed extract extracted from plant fenugreek as described in claim 1, which is characterized in that
Moderately polar macroreticular resin is styrene type copolymer containing the middle polarity of ester group or cyano absorption resin, and structure is big
Hole reticular structure；
Eluent is polar organic solvent aqueous solution miscible with water, and aqueous ph value is 5.0 to 9.5, organic solvent and water
Volume ratio is 10: 70~80: 10；
Extraction conditions in step b are as follows: be 50~80 DEG C, extract 2~4min under 15000~20000r/min in temperature；
The condition being centrifugated in step c are as follows: 10~35min is centrifuged under the conditions of 2~4 DEG C, 8000~10000r/min；
Condition when being concentrated in step e are as follows: vacuum degree is 0.06~0.095MPa, and temperature is 60 DEG C~85 DEG C, and concentration time is
20~35s.
3. a kind of food prepared by the preparation method using the fenugreek seed extract extracted from plant fenugreek described in claim 1
Savor antistaling agent.
4. a kind of preparation method of food preservative as claimed in claim 3, which is characterized in that the preparation of the food preservative
Method includes:
1) under conditions of 50-65 DEG C, by fenugreek seed extract, potassium sorbate, D-sorbite, amino acid, chitin, sodium salt,
Citric acid, the food grade surfactant containing 1.5~5.8wt% are added to concentration in the chlorine dioxide of 30mg/L~600mg/L
It in aqueous solution and the pH adjusting agent and metal chlorite that are dissolved in aqueous solution of chlorine dioxide, and stirs and evenly mixs, obtains mixing molten
Liquid；
2) Extracted From Oil-tea-cake extract extracts: being extracted, is filtered to Extracted From Oil-tea-cake at 70~95 DEG C with ethanol solution, collected filtrate and obtain
Extracting solution, extracting solution obtain Extracted From Oil-tea-cake extract through evaporating solvent, drying；
3) mixed solution obtained in step 1) is cooled to 20-30 DEG C, bacteriostatic agent, biological preservative, Extracted From Oil-tea-cake is then added
Extract stirs and evenly mixs, and obtains food preservative.
5. the preparation method of food preservative as claimed in claim 4, which is characterized in that it is water-soluble that the pH adjusting agent controls this
Liquid keeps acid, and the content of pH adjusting agent and metal chlorite should sufficiently achieve within the time of a year and a half, enables by metal
Chlorite reacted with the hydrogen ion of pH adjusting agent slow release generated chlorine dioxide amount be equal to by the aqueous solution gradually
The chlorine dioxide volatilized；
The pH adjusting agent uses food grade phosphoric acid sodium dihydrogen, and metal chlorite uses sodium chlorite；
The sodium salt is sodium chloride；
The bacteriostatic agent is nucleoprotamine.
6. the preparation method of food preservative as claimed in claim 4, which is characterized in that the biological preservative is rosemary
Acid.
The food grade surfactant uses food grade sucrose aliphatic ester；
The food preservative also includes the defoaming agent of 1~4.5wt%, and the defoaming agent uses silicone resin.
7. the preparation method of food preservative as claimed in claim 4, which is characterized in that aqueous solution of chlorine dioxide and be dissolved in two
Chlorine monoxid aqueous solution the preparation method comprises the following steps:
The pH value of previously prepared aqueous solution of chlorine dioxide is adjusted to neutrality, then chlorous acid is added into the aqueous solution of chlorine dioxide
Biphosphate is added in the aqueous solution of chlorine dioxide backward in sodium or its aqueous solution, food grade surfactant and defoaming agent
Sodium or its aqueous solution, until finished product food preservative is formed, the amount of contained sodium dihydrogen phosphate and sodium chlorite in the food preservative
It should sufficiently achieve to enable being reacted by sodium chlorite with the hydrogen ion of sodium dihydrogen phosphate slow release within the time of a year and a half and be generated
The amount of chlorine dioxide is approximately equal to the chlorine dioxide by gradually volatilizing in the aqueous solution；
After sodium dihydrogen phosphate is added into aqueous solution of chlorine dioxide, aqueous solution of chlorine dioxide is stablized into 2h, measurement should thereafter
The amount of the pH value of aqueous solution of chlorine dioxide and contained chlorine dioxide, if the pH value of aqueous solution of chlorine dioxide not 5.5 ± 0.9 model
In enclosing and/or the concentration of contained chlorine dioxide is more than 600mg/L, then repeats to add biphosphate into the aqueous solution of chlorine dioxide
Sodium or aqueous solution, until pH value=5.5 ± 0.9 of aqueous solution of chlorine dioxide.
8. the preparation method of food preservative as claimed in claim 4, which is characterized in that the amino acid be alanine and/
Or tyrosine；
Extracted many times are carried out to Extracted From Oil-tea-cake with ethanol solution, are filtered, filtrate merges to obtain extracting solution；
Re-evaporation solvent after decolourizing to the extracting solution；
The time that ethanol solution extracts Extracted From Oil-tea-cake is 2.5~4h.
9. food preservative prepared by a kind of preparation method of food preservative as claimed in claim 4, which is characterized in that described
Food preservative is composed of the following components by weight；2~6 parts of fenugreek seed extract, 2~5 parts of Extracted From Oil-tea-cake extract, sorbic acid
0.25~1.0 part of potassium, D-sorbite are 2~3 parts, amino acid 1~3 part, 0.5~1 part of chitin, 0.5~2 part of sodium salt, lemon
Sour 0.5~1.0 part, 0.2~0.5 part of bacteriostatic agent, 0.1~0.5 part of biological preservative, the food-grade surface containing 1.5~5.8wt%
0.1~0.5 part of activating agent, concentration 30mg/L~600mg/L 50~60 parts of aqueous solution of chlorine dioxide and be dissolved in chlorine dioxide
1~2 part of pH adjusting agent in aqueous solution and 1~3 part of metal chlorite.
10. a kind of preparation system of the food preservative of the preparation method of food preservative as claimed in claim 4, feature exist
In the preparation system of the food preservative is provided with
Salt acid compartment；
Salt acid compartment has reaction kettle by piping connection；
Reaction kettle passes through piping connection sodium chlorite room and mixing chamber；
Sodium chlorite room passes through piping connection to mixing chamber；
Mixing chamber has surfactant room and finished room by piping connection；
Finished room has sodium dihydrogen phosphate room by piping connection, is equipped with electricity on the pipeline that finished room, sodium dihydrogen phosphate room connect
Magnet valve；
PH detection device is installed in finished room；
PH detection device has control circuit by connection；
Control circuit passes through connection to solenoid valve；
Liquid pH value in the mixing chamber is neutral；
The pH value 5.5 ± 0.9 of liquid in the finished room.
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| CN105105280A (en) * | 2015-09-10 | 2015-12-02 | 中南林业科技大学 | Food preservative |
| CN105764184A (en) * | 2016-03-17 | 2016-07-13 | 宁波市江东精诚自动化设备有限公司 | Wireless intelligent dimming switch |
| CN106081345A (en) * | 2016-06-23 | 2016-11-09 | 俞锃 | A kind of compound fruits and vegetables fresh-keeping paper |
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