CN108753445A - A kind of technique of supercritical carbon dioxide extraction walnut oil - Google Patents
A kind of technique of supercritical carbon dioxide extraction walnut oil Download PDFInfo
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- CN108753445A CN108753445A CN201810544139.0A CN201810544139A CN108753445A CN 108753445 A CN108753445 A CN 108753445A CN 201810544139 A CN201810544139 A CN 201810544139A CN 108753445 A CN108753445 A CN 108753445A
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- 235000019498 Walnut oil Nutrition 0.000 title claims abstract description 29
- 239000008170 walnut oil Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003815 supercritical carbon dioxide extraction Methods 0.000 title claims description 8
- 241000758789 Juglans Species 0.000 claims abstract description 46
- 235000009496 Juglans regia Nutrition 0.000 claims abstract description 46
- 235000020234 walnut Nutrition 0.000 claims abstract description 46
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 17
- 235000019198 oils Nutrition 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000016709 nutrition Nutrition 0.000 abstract description 5
- 239000004615 ingredient Substances 0.000 abstract description 3
- 230000035764 nutrition Effects 0.000 abstract description 2
- 231100000572 poisoning Toxicity 0.000 abstract description 2
- 230000000607 poisoning effect Effects 0.000 abstract description 2
- 235000019495 Pecan oil Nutrition 0.000 abstract 1
- 239000010470 pecan oil Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000036541 health Effects 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 239000002398 materia medica Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000001151 other effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 2
- 208000004998 Abdominal Pain Diseases 0.000 description 1
- 208000002881 Colic Diseases 0.000 description 1
- 206010010144 Completed suicide Diseases 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010062717 Increased upper airway secretion Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000000133 brain stem Anatomy 0.000 description 1
- 230000003185 calcium uptake Effects 0.000 description 1
- 210000004720 cerebrum Anatomy 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000000378 dietary effect Effects 0.000 description 1
- 235000011869 dried fruits Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003779 hair growth Effects 0.000 description 1
- 208000014617 hemorrhoid Diseases 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- -1 linoleic acid, leukotrienes Chemical class 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 208000026435 phlegm Diseases 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000004491 retinal development Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings, cooking oils
- A23D9/02—Other edible oils or fats, e.g. shortenings, cooking oils characterised by the production or working-up
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
- A23J1/14—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from leguminous or other vegetable seeds; from press-cake or oil-bearing seeds
- A23J1/142—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from leguminous or other vegetable seeds; from press-cake or oil-bearing seeds by extracting with organic solvents
-
- 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
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
-
- 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
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
- C11B1/104—Production of fats or fatty oils from raw materials by extracting using super critical gases or vapours
-
- 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
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
- C11B1/108—Production of fats or fatty oils from raw materials by extracting after-treatment, e.g. of miscellae
-
- 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
-
- 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
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
- C11B3/10—Refining fats or fatty oils by adsorption
-
- 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
- C11B3/16—Refining fats or fatty oils by mechanical means
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Biochemistry (AREA)
- Medicines Containing Plant Substances (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a kind of supercritical carbon dioxide extract walnut oil technique, it by walnut kernel by peeling, baking, crushing, extraction, separation and etc. be made pecan oil.Present invention process and equipment flowsheet are simple, using supercritical extract, it is energy saving, safe and pollution-free, prevent the murder by poisoning in extraction process to human body and the pollution problem to environment, it can ensure that various nutritional ingredients are not destroyed in expressing process compared with traditional handicraft, it is genuine to make oily smell natural faint scent, green and healthy, nutrition is comprehensive.
Description
Technical field
The present invention relates to a kind of extracting methods of walnut oil, and walnut oil is extracted more particularly to a kind of supercritical carbon dioxide
Technological process, belong to food processing field.
Background technology
China possesses extremely abundant petal resource, and walnut kernel is recognized both at home and abroad very early as health care dried fruit product
Know, it is walnut kernel sweet in flavor and neutral in nature, gentle, have the function of kidney-replenishing blood-nourishing, moistening lung Dingchuan, relax bowel.Walnut kernel or one simultaneously
The cosmetic good merchantable brand of taste blacking hair and nourishing face, moisturizing health care.Walnut kernel has the function of strong kidney blood-nourishing, so, long term usage walnut can enable head
It is glossy to send out pitch-black, and to graying of hair, to send out withered not flourish has good curative effect.Ancient medicine man is early for the medical value of walnut kernel
It is recognized, they think that informal dress walnut kernel makes us to eat, and bone and flesh is moist, the black pool of beard and hair, Xuemaitong profit.《Sheng Nong's herbal classic》
Walnut is classified as long term usage to make light of one's life by commiting suicide QI invigorating, the top grade promoted longevity.The Tang Dynasty Meng's numerous writes《Dietetic materia medica》Middle description, eating walnut kernel can be with
Profit blood vessels are led in appetizing, keep bone and flesh fine and smooth.The works such as Song Dynasty Liu's writing brush《Kaibao Bencao》Middle description, walnut kernel " the order fertilizer of food is strong, moistens flesh,
Black beard and hair, the small water of more food profits, goes five hemorrhoid." Ming Dynasty's Li Shizhen work《Compendium of Materia Medica》It describes, walnut kernel has " benefiting qi and nourishing blood, moisturizing
Phlegm, the beneficial gate of vitality, place three is burnt, and warm lung ease constipation controls the cold of insufficiency type and breathes with cough, and waist foot aches again, trusted subordinate's colic, bloody flux intestines wind " and other effects.
Walnut kernel oil content is 55%~70%, and walnut oil accounts for about rich in unsaturated fatty acid such as linoleic acid, leukotrienes
90% or more, walnut oil is the essence of walnut, and there is brain tonic and intelligence development, cerebrum tonifying to improve one's memory, brain and nervous system is promoted to send out
It educates, promotes retinal development, calcium uptake is promoted to help skeleton development, protection stomach, relax bowel, moisten the bottom of heart, promote hair
Growth prevents and alleviates skin eczema, enhancing development, balance metabolism and other effects, so walnut kernel and oil are precious
Drug and health products.
?《Chinese food structural reform and development planning outline》In, walnut oil is listed in advocates the edible of popularization energetically
Oil, the method for preparing walnut oil now mainly have squeezing method production technology and organic solvent lixiviation process production technology, squeezing method life
The crude oil impurity of production. art production is more, need to be handled through high temperature and chemical method, and high-temperature time is long, product formation mode acid oil
Fat is unfavorable for health；Steam distillation grease, which is easy hydrolysis, makes unsaturated fatty acid have the generation of polymer, easily causes oil
The loss and destruction of the nutritional benefits substance such as middle vitamin E, carrotene, phytosterol and trace element, make protein denaturation,
Its water-soluble protein content is decreased obviously, and reduces the nutritive value and functional characteristic of walnut oil itself；Organic solvent leaches
The crude oil of method production technology production has organic solvent residual, is harmful to human health.
Invention content
It is an object of the invention to the deficiency for background technology, a kind of supercritical carbon dioxide extraction walnut oil is provided
Technique.
The present invention is achieved through the following technical solutions：
A kind of technique of supercritical carbon dioxide extraction walnut oil, it is made by following steps：
1), walnut after separation of hull from kernel, selects walnut kernel, walnut kernel is put into the hot water of 86 DEG C of temperature through rejuvenator broken shell
In, hot water is discharged after impregnating 8 minutes, is cooled down with cold water and rinses walnut kernel, while removing attached skin；
2) walnut kernel of peeling is toasted 3~5 hours at a temperature of 50~60 DEG C, or be put into frying pan, frying 25
~30 minutes, temperature was 95~105 DEG C；
3) walnut kernel made from step 2 is put into pulverizer and crushes 30~50 mesh fineness；
4) by the walnut kernel input extraction kettle after crushing, spe medium carbon dioxide is entered into extraction after flowmeter measures
It is 40~45 DEG C to take kettle, control supercritical extract temperature, and supercritical extract pressure is 36~40Mpa, carbon dioxide flow 300
~550 ls/h, then extraction time 2~3 hours starts release, pressure is made to be gradually decrease to normal pressure in stress-relief process, raw
At the mixture of degreasing walnut benevolence, liquid carbon dioxide and walnut oil；
5) mixture that step 4 is extracted to obtained degreasing walnut benevolence, liquid carbon dioxide and walnut oil is put into fluid point
From in device, 15~20Mpa of control separating pressure, 50~70 DEG C of separation temperature, walnut oil is separated from oil-liquid separator；
6) walnut oil made from step 5 is entered into decoloration oil tank, the vacuum degree for the oil tank that decolourizes is maintained at 550~600mm mercury
Column, oil temperature are maintained at 85~95 DEG C, and the activated carbon of walnut weight of oil 0.6% is added, and are filtered off after decolourizing 30 minutes under stiring
Except impurity is to get finished product；
Further, in the step 6, mixing speed is maintained at 55~65r/min, and filtration temperature is maintained at 60~65
℃。
Further, in the step 6, removal impurity can be handled with supercentrifuge.
The advantage of the invention is that：
1, Processes and apparatus flow is simple, energy saving, safe and pollution-free using supercritical extract, can be true compared with traditional handicraft
The various nutritional ingredients in expressing process are protected not to be destroyed, it is genuine to make oily smell natural faint scent, it is green and healthy,
Nutrition is comprehensive.
2, the residual of solvent toxicity under traditional extraction conditions is effectively prevented, while being also prevented in extraction process to people
The murder by poisoning of body and pollution problem to environment, while extraction temperature is low, can preferably retained product bioactive ingredients, extraction
It is albumen powder after walnut kernel drying after walnut oil.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below.
A kind of technique of supercritical carbon dioxide extraction walnut oil, it is made by following steps：
1), walnut after separation of hull from kernel, selects walnut kernel, walnut kernel is put into the hot water of 86 DEG C of temperature through rejuvenator broken shell
In, hot water is discharged after impregnating 8 minutes, is cooled down with cold water and rinses walnut kernel, while removing attached skin；
2) walnut kernel of peeling is toasted 3~5 hours at a temperature of 50~60 DEG C, or be put into frying pan, frying 25
~30 minutes, temperature was 95~105 DEG C；
3) walnut kernel made from step 2 is put into pulverizer and crushes 30~50 mesh fineness；
4) by the walnut kernel input extraction kettle after crushing, spe medium carbon dioxide is entered into extraction after flowmeter measures
It is 40~45 DEG C to take kettle, control supercritical extract temperature, and supercritical extract pressure is 36~40Mpa, carbon dioxide flow 300
~550 ls/h, then extraction time 2~3 hours starts release, pressure is made to be gradually decrease to normal pressure in stress-relief process, raw
At the mixture of degreasing walnut benevolence, liquid carbon dioxide and walnut oil；
5) mixture that step 4 is extracted to obtained degreasing walnut benevolence, liquid carbon dioxide and walnut oil is put into fluid point
From in device, 15~20Mpa of control separating pressure, 50~70 DEG C of separation temperature, walnut oil is separated from oil-liquid separator；
6) walnut oil made from step 5 is entered into decoloration oil tank, the vacuum degree for the oil tank that decolourizes is maintained at 550~600mm mercury
Column, oil temperature are maintained at 85~95 DEG C, and the activated carbon of walnut weight of oil 0.6% is added, and are filtered off after decolourizing 30 minutes under stiring
Except impurity is to get finished product；
Further, in the step 6, mixing speed is maintained at 55~65r/min, and filtration temperature is maintained at 60~65
℃。
Further, in the step 6, removal impurity can be handled with supercentrifuge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (3)
1. a kind of technique of supercritical carbon dioxide extraction walnut oil, which is characterized in that it is made by following steps：
1), walnut after separation of hull from kernel, is selected walnut kernel, walnut kernel is put into the hot water of 86 DEG C of temperature through rejuvenator broken shell, soaks
Hot water is discharged after 8 minutes for bubble, is cooled down with cold water and rinses walnut kernel, while removing attached skin；
2) walnut kernel of peeling is toasted 3~5 hours at a temperature of 50~60 DEG C, or be put into frying pan, frying 25~30
Minute, temperature is 95~105 DEG C；
3) walnut kernel made from step 2 is put into pulverizer and crushes 30~50 mesh fineness；
4) by the walnut kernel input extraction kettle after crushing, spe medium carbon dioxide is entered into extraction after flowmeter measures
Kettle, control supercritical extract temperature be 40~45 DEG C, supercritical extract pressure be 36~40Mpa, carbon dioxide flow be 300~
550 ls/h, then extraction time 2~3 hours starts release, pressure is made to be gradually decrease to normal pressure in stress-relief process, generates
The mixture of degreasing walnut benevolence, liquid carbon dioxide and walnut oil；
5) mixture that step 4 is extracted to obtained degreasing walnut benevolence, liquid carbon dioxide and walnut oil is put into oil-liquid separator
In, 15~20Mpa of control separating pressure, 50~70 DEG C of separation temperature, walnut oil is separated from oil-liquid separator；
6) walnut oil made from step 5 is entered into decoloration oil tank, the vacuum degree for the oil tank that decolourizes is maintained at 550~600mm mercury column, oil
Temperature is maintained at 85~95 DEG C, and the activated carbon of walnut weight of oil 0.6% is added, and removal of impurities is filtered off after decolourizing 30 minutes under stiring
Matter is to get finished product.
2. a kind of technique of supercritical carbon dioxide extraction walnut oil according to claim 1, it is characterised in that：The step
In rapid 6, mixing speed is maintained at 55~65r/min, and filtration temperature is maintained at 60~65 DEG C.
3. a kind of technique of supercritical carbon dioxide extraction walnut oil according to claim 1, it is characterised in that：The step
In rapid 6, removal impurity can be handled with supercentrifuge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544139.0A CN108753445A (en) | 2018-05-31 | 2018-05-31 | A kind of technique of supercritical carbon dioxide extraction walnut oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544139.0A CN108753445A (en) | 2018-05-31 | 2018-05-31 | A kind of technique of supercritical carbon dioxide extraction walnut oil |
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| Publication Number | Publication Date |
|---|---|
| CN108753445A true CN108753445A (en) | 2018-11-06 |
Family
ID=64000842
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|---|---|---|---|
| CN201810544139.0A Pending CN108753445A (en) | 2018-05-31 | 2018-05-31 | A kind of technique of supercritical carbon dioxide extraction walnut oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439429A (en) * | 2018-12-18 | 2019-03-08 | 贵州航天乌江机电设备有限责任公司 | A kind of supercritical extraction method of walnut oil |
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2018
- 2018-05-31 CN CN201810544139.0A patent/CN108753445A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439429A (en) * | 2018-12-18 | 2019-03-08 | 贵州航天乌江机电设备有限责任公司 | A kind of supercritical extraction method of walnut oil |
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