CN109233990A - Wheat-germ oil - Google Patents
Wheat-germ oil Download PDFInfo
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- CN109233990A CN109233990A CN201811016949.5A CN201811016949A CN109233990A CN 109233990 A CN109233990 A CN 109233990A CN 201811016949 A CN201811016949 A CN 201811016949A CN 109233990 A CN109233990 A CN 109233990A
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- wheat
- germ oil
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- demulsification
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Organic Chemistry (AREA)
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The present invention relates to wheat-germ oils, extracting method includes wheat embryo enzymatic hydrolysis pre-treatment, complex enzyme zymohydrolysis, centrifuge separation, demulsification, centrifuge separation, wherein be demulsified step are as follows: silica, ultrapure water, sodium hydroxide are added into oily phase, pH is adjusted to alkalinity, then high speed disperser high speed shear is used, must be demulsified liquid, spare.It has the beneficial effect that the present invention, using disodium ethylene diamine tetraacetate and polyoxyethylene (20) sorbitanmonolaureate, increases permeability in enzymolysis process, promotes the macromoleculars such as grease, protein in wheat embryo to permeate from cell, discharge；Using centrifugation-three step of demulsification-centrifugation demulsification method, cooperative gain being generated using sodium hydroxide and silica and high speed disperser and is acted on, emulsification is broken, solve the hardly possible that is demulsified in enzymatic isolation method, the problem more than grease impurities improves grease extraction efficiency and oil product purity.Present invention process is simple and convenient to operate, and improves the economic benefit of wheat-germ oil.
Description
Technical field
The present invention relates to embryo oil extractive technique fields, more particularly, to wheat-germ oil.
Background technique
Wheat embryo accounts for about the 2-3% of entire wheat weight, is the byproduct produced during refined flour, contains 8-12%
Quality plant fat, 30% protein, at the same be rich in natural multi-vitamins E, be content of vitamin E highest in nature
Food, have very high edible value and health-care effect.The processing and utilization rate of wheat embryo is very low at present, less than wheat embryo
The 5% of yield is a kind of wasting of resources.
Wheat-germ oil is using wheat embryo as a kind of grain germ of waste oil, it has concentrated the nutritious extract of wheat
China is rich in vitamin E, linoleic acid, linolenic acid, sweet eight carbon alcohol and a variety of physiological activity components, is valuable functional food, has
The laudatory title of " liquid golden ".Vitamin E especially in wheat-germ oil is the various high-purity day of tetra- seed type of α, β, γ, δ
Right vitamin E has antisterility, anti-aging, promotes human metabolism, enhance physical strength and memory, reduces cholesterol, prevention and treatment
Artery sclerosis improves blood circulation, the function of enhancing human immunity；So wheat-germ oil becomes most by the welcome of object
One of vegetable oil.But fat content is considerably less in wheat embryo, 2 tons of wheats just extract 1 kilogram of wheat-germ oil, so small
Wheat germ oil is very smart expensive.
Currently, the extracting method of wheat-germ oil mainly has mechanical pressing method, organic solvent lixiviation process, supercritical fluid extraction
It follows the example of and aqueous enzymatic method.Mechanical pressing method is easy to operate, safety, but oil yield is lower, and only 5% or so, and oil-proofness is poor；
Organic solvent lixiviation process, oil yield have that dissolvent residual and solvent are inflammable up to 8-10%, obtained by both methods
Wheat-germ oil all have to pass through the purification steps such as degumming, decoloration, depickling, deodorization, the wheat embryo that can be just commercialized
Oil；Supercritical CO2Extraction cost of investment is big, and working condition requires height, cannot use on a small scale；Aqueous enzymatic method reaction condition temperature
With safe green.But above-mentioned technology attainable recovery rate all do not achieve the effect that it is more satisfactory.
Combined-enzyme method extracts vegetable oil and is chiefly used in cocoa, maize, vegetable seed, soybean and sunflower etc. in foreign countries, and obtains
Good effect.It is enzyme --- the cellulase, pectin using degradable plant cell wall that combined-enzyme method, which extracts vegetable oil,
Enzyme etc. destroys the cell wall of oil crops, releases the grease content in plant cell under mild reaction conditions,
To improve a kind of new oil extracting process of vegetable oil recovery rate.Compared with traditional oil extracting process, because prepared by complex enzyme enzyme process
Vegetable fat is released in a mild condition, therefore has preferable quality.But in enzymatic isolation method extraction process, grease emulsifying is existing
As serious, after reacting a period of time, the macromolecular substances such as grease, protein are distributed in water phase into the cell from wheat embryo.By
In the polarity and stickiness of grease itself and the presence of hydrophilelipophile albumen (surface reactive material), so that original immiscible
Grease, water connect together, and are not easy to be completely separated, and form oil emulsion.It is non-oil due to containing oil component and water, albumen etc. in oil emulsion
Ingredient influences oil quality, if carrying out the oil in demulsification recycling emulsion, the economic effect of aqueous enzymatic extraction can be improved
Benefit.
The prior art such as Authorization Notice No. is the Chinese invention patent of CN102757857B, discloses a kind of combined-enzyme method and mentions
Take the extracting method of wheat-germ oil, comprising the following steps: crush wheat embryo；Under conditions of pH is 4-6, first with acidity
Protease hydrolyzed wheat embryo, enzyme deactivation add cellulase and amylase enzymolysis, and the vigor ratio of cellulase and amylase is
5:3 obtains wheat embryo hydrolysis slurry, separates oil mutually up to wheat-germ oil.But the attainable recovery rate of technology institute is still
Do not achieve the effect that fine grained that is more satisfactory, and pulverizing, easily causes particle agglomeration, influence the extraction of enzyme.
Summary of the invention
The purpose of the present invention is to provide a kind of simple process, no chemical solvent residual, demulsification is convenient, extraction efficiency,
Rate and purity are higher, the extracting method of the few wheat-germ oil of pigment residue.
The present invention in view of the above technology in the problem of mentioning, the technical solution taken are as follows:
The extracting method of wheat-germ oil, including wheat embryo enzymatic hydrolysis pre-treatment, complex enzyme zymohydrolysis, centrifuge separation, demulsification,
Centrifuge separation, specific steps are as follows:
Wheat embryo digests pre-treatment: by weight, 90-110 parts of wheat embryos being taken to crush, crosses 60-100 mesh, be put into
50-70min is heated in 100-120 DEG C of autoclave, is taken out, and 360-550 parts of ultrapure waters are added, it is 25-35 minutes ultrasonic, obtain pre-treatment
Solution, it is spare；If wheat embryo crushing is meticulous, fine powder is easy agglomeration, sticks together, and is not easy to be uniformly mixed with enzyme preparation, such as
Fruit is excessively thick, then is not easy to digest；
Complex enzyme zymohydrolysis: the pH value of pretreatment solution is adjusted to 4.5-5.5, complex enzyme 2.0-3.0 parts, ethylenediamine tetraacetic is added
5-15 parts of acetic acid disodium, sorbitanmonolaureate 5-15 parts of polyoxyethylene (20), in 40-50 DEG C of water-bath, constant temperature digests 5-
7h is warming up to 85-100 DEG C, and enzyme deactivation 5-15min, taking-up cools, and obtains wheat embryo hydrolysis slurry, spare；Ethylenediamine tetra-acetic acid two
The presence of sodium and polyoxyethylene (20) sorbitanmonolaureate can remove the cation of cell surface, dissolve out cell table
A part of lipopolysaccharides segment in face makes cell wall, cell membrane form hole, the macromoleculars such as intracellular grease, protein is promoted to release
It puts and is distributed in water faster；Disodium ethylene diamine tetraacetate and polyoxyethylene (20) sorbitanmonolaureate and reactant
Complex enzyme generates the effect of cooperative gain in system, increases the permeability of cell, promotes grease, protein in wheat embryo cell
Equal macromolecular substances are dissolved out and are distributed in water phase, improve cell enzymatic hydrolyzation；
Centrifuge separation: wheat embryo is hydrolyzed into pulp centrifuged separation, centrifugation rate 4000r/min is centrifuged 5-15min.It receives
Oil-collecting phase, it is spare；
Demulsification: 10-20 parts of silica being added into oily phase, and 25-35 minutes ultrasonic, then 360-550 parts of addition is ultrapure
Water, sodium hydroxide, ultrasonic vibration 15-25min adjust pH to 9.0-10.0, then by solution high speed disperser in 15000-
20-40s is sheared under 25000r/min must be demulsified liquid, spare；In enzymolysis process, due to the polarity of wheat embryo grease itself and glutinous
Property and hydrophilelipophile albumen (surface reactive material) dispersion in water so that original immiscible grease, water were connected in one
It rises, is not easy to be completely separated, form emulsion；The presence of sodium hydroxide and silica makes reaction system become alkalinity, association by acidity
With the shear action of high speed disperser, break emulsion layer, so that emulsion is separated into water phase and oily phase again, to recycle emulsion
In oil component, while the non-oil component such as abandon water, protein not only increases oil product purity, more improves conbined enzymolysis
The extraction efficiency for extracting wheat-germ oil, improves the economic benefit of the technique；
Centrifuge separation: by demulsification liquid centrifuge separation, centrifugation rate 4000r/min is centrifuged 5-15min.Oily phase is collected, is obtained small
Wheat germ oil.
Preferably, the mass ratio of wheat germ powder and water is preferably 1 in above-mentioned wheat embryo enzymatic hydrolysis pre-treatment step:
4-6, more preferably 1:5.If solid-liquid ratio is greater than 1:4, wheat embryo and water undercompounding, enzyme deactivation cannot be reached and adjust pH
The effect of value；If solid-liquid ratio is less than 1:6, in centrifuge separation since excess moisture will cause production and the waste of raw material.
Preferably, complex enzyme used is acid protease and cellulase, and its ratio be 4- in complex enzyme zymohydrolysis step
6:1。
Compared with the prior art, the advantages of the present invention are as follows: 1) present invention in enzymolysis process use ethylenediamine tetra-acetic acid
Disodium and polyoxyethylene (20) sorbitanmonolaureate increase permeability, promote grease, protein etc. in wheat embryo
Macromolecular is permeated from cell, is discharged, dispersion；2) it using centrifugation-three step of demulsification-centrifugation demulsification method, solves in enzymatic isolation method
Demulsification is difficult, and the problem more than grease impurities provides a kind of effective method for the refining of wheat-germ oil.Entire refining process technique
It is simple and convenient to operate, improves the economic benefit of wheat-germ oil；3) present invention is demulsified three times using centrifugation-demulsification-centrifugation,
In second of demulsification step, cooperative gain is generated using sodium hydroxide and silica and high speed disperser and is acted on, cream is broken
Change, improve grease extraction efficiency and oil product purity, compared with general centrifugation demulsification, obtained oil product impurity is few, purity is high, and color is bright
Degree is high.
Specific embodiment
The present invention program is described further below by embodiment:
Embodiment 1:
The extracting method of wheat-germ oil, including wheat embryo enzymatic hydrolysis pre-treatment, complex enzyme zymohydrolysis, centrifuge separation, demulsification,
Centrifuge separation, specific steps are as follows:
1) wheat embryo digests pre-treatment: by weight, 100 parts of wheat embryos being taken to crush, crosses 60-100 mesh, be put into
It heats 60 minutes, takes out in 110 DEG C of autoclaves, 500 parts of ultrapure waters are added, ultrasound 30 minutes obtains pretreatment solution, spare；
2) complex enzyme zymohydrolysis: the pH value of pretreatment solution is adjusted to 5.0,2.5 parts of complex enzyme, ethylenediamine tetra-acetic acid two is added
10 parts of sodium, 10 parts of sorbitanmonolaureate of polyoxyethylene (20), in 45 DEG C of water-baths, constant temperature digests 6h, is warming up to 90 DEG C, goes out
Enzyme 10min, taking-up cool, and obtain wheat embryo hydrolysis slurry, spare；
3) it is centrifugated: wheat embryo being hydrolyzed into pulp centrifuged separation, centrifugation rate 4000r/min is centrifuged 10min.It receives
Oil-collecting phase, it is spare；
4) it is demulsified: 15 parts of silica being added into oily phase, then 500 parts of ultrapure waters, hydroxides are added in ultrasound 30 minutes
Sodium, ultrasonic vibration 20min adjust pH to 9.0, then shear solution at 15000-25000r/min with high speed disperser
30s must be demulsified liquid, spare；
5) be centrifugated: by demulsification liquid centrifuge separation, centrifugation rate 4000r/min is centrifuged 10min.Oily phase is collected, is obtained small
Wheat germ oil.
In the present embodiment complex enzyme zymohydrolysis step, complex enzyme used is acid protease and cellulase, and its ratio be 5:
1。
Embodiment 2:
The extracting method of wheat-germ oil, including wheat embryo enzymatic hydrolysis pre-treatment, complex enzyme zymohydrolysis, centrifuge separation, demulsification,
Centrifuge separation, specific steps are as follows:
1) wheat embryo digests pre-treatment: by weight, 90 parts of wheat embryos being taken to crush, crosses 60-100 mesh, be put into 100
It heats 50 minutes, takes out in DEG C autoclave, 360 parts of ultrapure waters are added, ultrasound 25 minutes obtains pretreatment solution, spare；
2) complex enzyme zymohydrolysis: the pH value of pretreatment solution is adjusted to 4.5,2.0 parts of complex enzyme, ethylenediamine tetra-acetic acid two is added
5 parts of sodium, 5 parts of sorbitanmonolaureate of polyoxyethylene (20), in 40 DEG C of water-baths, constant temperature enzymatic hydrolysis 5 is warming up to 85 DEG C, enzyme deactivation
5min, taking-up cool, and obtain wheat embryo hydrolysis slurry, spare；
3) it is centrifugated: wheat embryo being hydrolyzed into pulp centrifuged separation, centrifugation rate 4000r/min is centrifuged 5min.It collects
Oily phase, it is spare；
4) it is demulsified: 10 parts of silica being added into oily phase, then 360 parts of ultrapure waters, hydroxides are added in ultrasound 25 minutes
Sodium, ultrasonic vibration 15min adjust pH to 9.0, then shear solution at 15000-25000r/min with high speed disperser
20s must be demulsified liquid, spare；
5) be centrifugated: by demulsification liquid centrifuge separation, centrifugation rate 4000r/min is centrifuged 5min.Oily phase is collected, is obtained small
Wheat germ oil.
In the present embodiment complex enzyme zymohydrolysis step, complex enzyme used is acid protease and cellulase, and its ratio be 4:
1。
Embodiment 3:
The extracting method of wheat-germ oil, including wheat embryo enzymatic hydrolysis pre-treatment, complex enzyme zymohydrolysis, centrifuge separation, demulsification,
Centrifuge separation, specific steps are as follows:
1) wheat embryo digests pre-treatment: by weight, 110 parts of wheat embryos being taken to crush, crosses 60-100 mesh, be put into
It heats 70 minutes, takes out in 120 DEG C of autoclaves, 550 parts of ultrapure waters are added, ultrasound 35 minutes obtains pretreatment solution, spare；
2) complex enzyme zymohydrolysis: the pH value of pretreatment solution is adjusted to 5.5,3.0 parts of complex enzyme, ethylenediamine tetra-acetic acid two is added
15 parts of sodium, 15 parts of sorbitanmonolaureate of polyoxyethylene (20), in 50 DEG C of water-baths, constant temperature digests 7h, is warming up to 100 DEG C,
Enzyme deactivation 15min, taking-up cool, and obtain wheat embryo hydrolysis slurry, spare；
3) it is centrifugated: wheat embryo being hydrolyzed into pulp centrifuged separation, centrifugation rate 4000r/min is centrifuged 5-15min.
Oily phase is collected, it is spare；
4) it is demulsified: 20 parts of silica being added into oily phase, then 550 parts of ultrapure waters, hydroxides are added in ultrasound 35 minutes
Sodium, ultrasonic vibration 25min adjust pH to 10.0, then shear solution at 15000-25000r/min with high speed disperser
40s must be demulsified liquid, spare；
5) be centrifugated: by demulsification liquid centrifuge separation, centrifugation rate 4000r/min is centrifuged 15min.Oily phase is collected, is obtained small
Wheat germ oil.
In the present embodiment complex enzyme zymohydrolysis step, complex enzyme used is acid protease and cellulase, and its ratio be 6:
1。
Comparative example 1:
Disodium ethylene diamine tetraacetate, polyoxyethylene (20) sorbitol anhydride Dan Yue are not added in the preparation step of complex enzyme zymohydrolysis
Cinnamic acid ester, rest part and embodiment 1 are completely the same.
Comparative example 2:
It is not added with silica, sodium hydroxide in demulsification step, rest part and embodiment 1 are completely the same.
Comparative example 3:
Disodium ethylene diamine tetraacetate, polyoxyethylene (20) sorbitol anhydride mono laurate are not added in complex enzyme zymohydrolysis step
Ester, does not carry out demulsification step and final step step with centrifugal separation, rest part and embodiment 1 are completely the same.
Embodiment 4:
Embodiment 1 is set as test group, comparative example 1, comparative example 2, comparative example 3 are set to control group 1,2 and of control group
Control group 3 detects the oil extracting rate of embodiment and comparative example and the quality of extracted wheat-germ oil, as a result such as Tables 1 and 2 institute
Show.
Wheat-germ oil yield:
In formula: m1For oil quality of dissociating, g；m2For crude fat quality total in plumule, g.
Wheat-germ oil attributional analysis: by measuring main fatty acid component content, wheat embryo oil quality is analyzed, specifically
Method are as follows: 1) sample esterification: taking about 8mg oil sample, and the n-hexane of 6mL is added, and 160 μ L methyl acetates add 400 μ L's
NaOCH3/CH3OH methylates 20min at room temperature, is subsequently placed in household freezer 10min, the grass of 240 μ L is rapidly added after taking-up
Acid, centrifugation discards precipitating, and solution is passed through anhydrous Na 2SO4 layers to adsorb moisture therein；2) chromatography detects: using Agilent
7890A gas chromatographic analysis esterification sample uses fid detector, the microsyringe of 10 μ L；Gas chromatographic column is HP-
INNOWAX Fused-silica capillary column (30m × 0.25mm, 0.25 μm of film thickness)；Detection parameters: injection port, 250 DEG C, pressure
24.52psi, 1.0 μ L of sample introduction, does not shunt, and carrier gas is nitrogen (99.9%), and column pressure is 24.52psi；Using temperature programming, starting
Temperature 50 C keeps this temperature 1min, rises to 200 DEG C with 25 DEG C/min, keeps 5min, then rise to 230 DEG C with 3 DEG C/min, protects
Hold 18min；Fid detector, 280 DEG C, combustion gas is hydrogen, air, and flow velocity is respectively 40.0mL/min, 450.0mL/min, carrier gas
For nitrogen (99.9%), flow velocity 30.0mL/min.
The oil extracting rate and correlation merit of 1 wheat-germ oil of table
| Group | Oil extracting rate (%) | Acid value (mg/g) | Peroxide value (meg/kg) | Anisidine value |
| Test group | 85 | 0.19 | 0.9012 | 0.3073 |
| Embodiment 2 | 75 | 0.23 | 1.3353 | 0.3153 |
| Embodiment 3 | 78 | 0.21 | 1.3367 | 0.3221 |
| Control group 1 | 62 | 0.23 | 1.4987 | 0.3554 |
| Control group 2 | 70 | 0.25 | 1.5231 | 0.3491 |
| Control group 3 | 52 | 0.22 | 1.6583 | 0.3895 |
2 wheat-germ oil fatty acid composition of table and content
Pass through above comparative experiments, it can be deduced that such conclusion: wheat is increased using disodium ethylene diamine tetraacetate
The permeability of sprout cell, polyoxyethylene (20) sorbitanmonolaureate promote the dispersion of grease, protein macromolecule, improve
The hydrolysis result of complex enzyme, while silica, sodium hydroxide are used, it acts synergistically with high speed disperser, can effectively avoid cream
Change, recycle the lubricant component in emulsion layer, and remove impurity component, improves oil extracting rate and oil product purity.
Routine operation in operating procedure of the invention is well known to those skilled in the art, herein without repeating.
Technical solution of the present invention is described in detail in embodiment described above, it should be understood that the above is only
For specific embodiments of the present invention, it is not intended to restrict the invention, all any modifications made in spirit of the invention,
Supplement or similar fashion substitution etc., should all be included in the protection scope of the present invention.
Claims (9)
1. the extracting method of wheat-germ oil, including the pre-treatment of wheat embryo enzymatic hydrolysis, complex enzyme zymohydrolysis, centrifuge separation, demulsification, from
Heart separation, it is characterised in that: the demulsification step are as follows: silica, ultrapure water, hydrogen is added to being centrifugated in resulting oily phase
Sodium oxide molybdena is uniformly mixed, and adjusting pH to alkalinity is sheared with high speed disperser, obtains demulsification liquid, spare.
2. the extracting method of wheat-germ oil according to claim 1, it is characterised in that: in the demulsification step, pH tune
For section to 9.0-10.0, high speed disperser dispersion rate is 15000-25000r/min, shear time 20-40s.
3. the extracting method of wheat-germ oil according to claim 1, it is characterised in that: place before the wheat embryo enzymatic hydrolysis
Manage step are as follows: it takes wheat embryo to crush, sterilizing, takes out and ultrapure water ultrasound is added, obtain pretreatment solution, it is spare.
4. the extracting method of wheat-germ oil according to claim 3, it is characterised in that: the wheat germ powder and water
Mass ratio is 1:4-6.
5. the extracting method of wheat-germ oil according to claim 1, it is characterised in that: the complex enzyme zymohydrolysis step
Are as follows: the pH value of pretreatment solution is adjusted to 4.5-5.5, and complex enzyme, disodium ethylene diamine tetraacetate, polyoxyethylene (20) sorb is added
Alcohol acid anhydride monolaurate, enzymatic hydrolysis, heat up enzyme deactivation, and taking-up cools, and obtains wheat embryo hydrolysis slurry, spare.
6. the extracting method of wheat-germ oil according to claim 5, it is characterised in that: by weight, described compound
Enzyme additive amount is 2.0-3.0 parts, and complex enzyme is acid protease and cellulase, and its ratio be 4-6:1, hydrolysis temperature 40-
50 DEG C, enzymolysis time 5-7h.
7. the extracting method of wheat-germ oil according to claim 5, it is characterised in that: by weight, the second two
Amine tetraacethyl disodium additive amount is 5-15 parts, and polyoxyethylene (20) sorbitanmonolaureate additive amount is 5-15 parts.
8. the extracting method of wheat-germ oil according to claim 1, it is characterised in that: the step with centrifugal separation are as follows:
Wheat embryo is hydrolyzed into pulp centrifuged separation, centrifugation rate 4000r/min is centrifuged 5-15min, collects oily phase.
9. wheat-germ oil made from the extracting method of the described in any item wheat-germ oils of claim 1-8.
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| CN201811016949.5A CN109233990A (en) | 2018-09-03 | 2018-09-03 | Wheat-germ oil |
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ID=65059927
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773902A (en) * | 2021-08-31 | 2021-12-10 | 海南黎草纪新生物科技有限公司 | Extraction method for camellia seeds |
| CN117730976A (en) * | 2024-01-05 | 2024-03-22 | 东莞市华井生物科技有限公司 | Preparation technology of old brine essential oil and product |
-
2018
- 2018-09-03 CN CN201811016949.5A patent/CN109233990A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773902A (en) * | 2021-08-31 | 2021-12-10 | 海南黎草纪新生物科技有限公司 | Extraction method for camellia seeds |
| CN113773902B (en) * | 2021-08-31 | 2023-09-01 | 海南黎草纪新生物科技有限公司 | Extraction method for camellia seeds |
| CN117730976A (en) * | 2024-01-05 | 2024-03-22 | 东莞市华井生物科技有限公司 | Preparation technology of old brine essential oil and product |
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Application publication date: 20190118 |