CN101760297A - Method for carrying out solid-liquid separation on plant oil or modified grease thereof - Google Patents
Method for carrying out solid-liquid separation on plant oil or modified grease thereof Download PDFInfo
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Abstract
The invention provides a method for carrying out solid-liquid separation on plant oil or modified grease thereof to enriching nutrient substances therein. The method comprises the following steps: (a) first dry fractionation: promoting crystal growth of plant oil, modified grease thereof, namely a raw oil (a) under normal pressure at crystal growth temperature of -5 DEG C to 35 DEG C to obtain mixture of solid oil and liquid oil; carrying out filter pressing on the obtained mixture under a pressure of 1-4 bar to obtain liquid oil with enriched nutrient substances.The method of the invention imposes low requirements on production equipment and features safety and low processing cost, and is suitable for being popularized; in addition, the obtained solid oil through solid-liquid separation can be widely applied to the food industry, especially the candy industry and fried food industry, while the liquid oil contains high-content unsaponifiable substance which contains high-content biological active ingredients, so that the liquid oil can be widely applied to household chemical industry and pharmaceuticals industry.
Description
Technical field
The invention provides a kind of method of solid-liquid separation, specifically, provide a kind of vegetables oil or its modified grease are carried out the method for solid-liquid separation with enrichment nutritive substance wherein.
Background technology
Shea butter (shea butter) contains triterpene substance, plant sterol and the vitamin-E that is no less than 4% (the contained ratio of general vegetables oil is less than 1%), these materials all are unsaponifiables, so people weigh the content of these materials usually with unsaponifiable matter content.
These unsaponifiables have splendid maintenance, anti-inflammatory, with the effect of skin healing, the people of the most suitable baby and supersensitivity skin uses.Specific as follows: (1) is used as cosmetic base: shea butter is considered to be the most effective natural skin wetting Agent for Printing Inks and amendment, thereby is applied in cosmetic cream, emulsion, anhydrous cream frost and other trimmings; (2) be used for sun care preparations: shea butter is rich in triterpene substance, is used for the injury that sun care preparations can prevent that uviolizing from causing skin; (3) be used for the face protection frost: shea butter can promote the circulation of cell regeneration and capillary vessel, is used for the skin care product tool and prevents effect with delaying decrepitude of skin; (4) be used for hair preparation: shea butter has stronger lock outlet capacity, and skin is had good avidity, can repair epithelium and dry easily broken hair internal organizational structure, the hair of drying, damaged is got well, and it is moist and bright to give hair; (5) vitamin A in the shea butter all has important improvement effect to dispeling of many skin defects such as fold, eczema etc.; To curing skin allergy, chapped skin, skin ulcer, all kinds of skin inflammation, insect bite and skin burn etc. the improvement effect is arranged all.
Based on above reason, shea butter is widely used in the daily chemical products such as " overlord ", " silk is precious ", " Uniliver ", " Man Xiulei steps on ".For example, the attraction of a shampoo of " Uniliver " Hazeline brand extracts shea butter and the natural elite of Semen Sesami Nigrum exactly, at problems such as withered, knotting, difficult combs, is hair injection abundant nutrition especially, progressively nurses one's health and continues to improve hair quality.
Similarly, shea butter also has similar purposes in pharmaceutical industries.
But, only use shea butter that a deficiency is arranged.Shea butter is solid at normal temperatures, if addition too high (for example surpassing 6%), it is thick and heavy to seem.Therefore, its addition in some daily chemical products (as body wash) can only maintain low ratio, and the corresponding content of unsaponifiables in these daily chemical products is just not high yet, causes the human consumer to use DeGrain behind the product at last.
In order to solve this deficiency, available technology adopting divide and put forward technology shea butter is divided into liquid oils and solid oil, get liquid oils and add in the daily chemical products.Done following two benefits like this: (1) liquid oils is liquid in the normal state, has reduced thick and heavy sense, and daily use chemicals company can add more in products such as body wash; (2) unsaponifiable matter content increases substantially in the liquid oils, adds same liquid oils in daily chemical products, and unsaponifiable matter content can increase substantially, and the effect after the human consumer uses also significantly improves.
Similarly, sunflower seed oil, vegetable seed wet goods be nutritive substance such as rich in vitamin E, sterol also, also can put forward technology by branch and come the enrichment nutritive substance.
It all is to carry through twice solvent branch achieving the goal that present existing branch is put forward technology, needs to use objectionable impurities-acetone.As described in patent documentation WO 99/63031, EP 1084215 and US 6552208, it is as follows that branch is put forward step: (1) mixes 100ml shea butter and 500ml acetone, and (0.5 ℃/minute) cools to 4 ℃ of growing the grains at a slow speed, press filtration, distillation acetone; (2) get 100g liquid oils F1 (promptly, the liquid oils of carrying in one minute) and 400ml acetone mix, cool to-12 ℃ for-0.5 ℃/minute from 10 ℃ with cooling rate earlier, ℃/minute cool to-20 ℃ of growing the grains with cooling rate-0.1 again from-12 ℃, press filtration, distillation acetone is got liquid oils F2 (that is, two road branches carry liquid oils) again.
The weak point of above-mentioned art methods is: the working condition harshness that (1) solvent branch is carried (needs-15 ℃ to-20 ℃ heat insulation liquid), cost height; (2) solvent is inflammable and explosive, and equipment claimed is explosion-proof, and factory, personnel are had potential safety hazard; (3) evaporating solvent need expend a lot of energy, and many solvent evaporation devices, has increased manufacturing cost.
For above-mentioned reasons, the domestic solvent branch that do not build up is as yet carried factory at present, and the technology of mentioning in the above-mentioned patent documentation also can't be applied.
Therefore, this area press for develop a kind of new, to production unit require lower, safety, tooling cost lower, be fit to the solid-liquid separating method promoted, especially divide extracting method, can from vegetables oil or its modified grease, produce the liquid oils that is rich in unsaponifiables.
Summary of the invention
The invention provides a kind of dry method fractionation technology that adopts vegetables oil or its modified grease are carried out the novel method of solid-liquid separation with enrichment nutritive substance wherein, thereby solved problems of the prior art.
On the one hand, the invention provides and a kind of vegetables oil or its modified grease are carried out the method for solid-liquid separation with enrichment nutritive substance wherein, this method may further comprise the steps:
(a) the first road dry method branch is carried:
Under-5 ℃ to 35 ℃ growing the grain temperature, to vegetables oil or its modified grease, promptly stock oil (a ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust (bar), the mixture of gained is carried out press filtration, the liquid oils of nutritive substance that obtained enrichment.
Preferably, this liquid oils accounts for 65 weight % or higher of stock oil (a ') gross weight.
One preferred embodiment in, this method also comprises:
(b) the second road dry method branch is carried:
Under-5 ℃ to 20 ℃ growing the grain temperature, to the enrichment that obtains in the step (a) liquid oils of nutritive substance, promptly stock oil (b ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.
Preferably, this liquid oils accounts for 68 weight % or higher of stock oil (b ') gross weight.
Another preferred embodiment in, this method also comprises:
(c) the 3rd road dry method branch is carried:
Under-5 ℃ to 10 ℃ growing the grain temperature, to the enrichment that obtains in the step (b) liquid oils of nutritive substance, promptly stock oil (c ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.
Preferably, this liquid oils accounts for 76 weight % or higher of stock oil (c ') gross weight.
Another preferred embodiment in, this method also comprises: at the step (a) and (b) with before the one or more steps (c), in stock oil (a '), (b ') and/or (c '), add crystal seed, wherein, described crystal seed comprises hydrogenated products and the wax of described stock oil (a '), (b ') and/or (c ').
Another preferred embodiment in, this method also comprises: at the step (a) and (b) with before the one or more steps (c), stock oil (a '), (b ') and/or (c ') are carried out pre-treatment, and wherein, described pre-treatment comprises hydrogenation, mixing and transesterify.
Another preferred embodiment in, described vegetables oil is selected from shea butter, rapeseed oil, soybean oil, jojoba oil, lanolin, raisin seed oil, Oenothera oil, linseed oil and sunflower seed oil.
Another preferred embodiment in, the enrichment of gained the unsaponifiable matter content in the liquid oils of nutritive substance be 3-30 weight %, in the weight of described liquid oils.
Another preferred embodiment in, the normal pressure growing the grain in the described step (a) carries out under 5-30 ℃.
Another preferred embodiment in, described vegetables oil is a shea butter.
Embodiment
The present inventor finds after having passed through extensive and deep research, by adopting the dry method fractionation technology that vegetables oil or its modified grease are carried out solid-liquid separation, exempt existing solvent branch and carried the middle objectionable impurities-acetone that adopts, making solid part and liquid portion in the grease self separate, is a kind of, safety lower to the production unit requirement, technology that tooling cost is lower; And the present invention can adopt together, two roads or three road dry method fractionation technologies, has obtained the higher liquid oils of nutritive substance enrichment degree thereby separate.Based on above-mentioned discovery, the present invention is accomplished.
In a first aspect of the present invention, provide a kind of vegetables oil or its modified grease have been carried out the method for solid-liquid separation with enrichment nutritive substance wherein, this method may further comprise the steps:
(a) the first road dry method branch is carried:
Under the growing the grain temperature of-5 ℃ to 35 ℃ (can select to be fit to the growing the grain temperature of different oil according to different oil, down with), to vegetables oil or its modified grease, promptly stock oil (a ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
At 1-40 crust, preferably under the pressure of 5 crust, the mixture of gained is carried out press filtration, the liquid oils of nutritive substance that obtained enrichment.This liquid oils can account for 65 weight % or higher of stock oil (a ') gross weight.Wherein, separate the solid oil that obtains and to be widely used for food service industry, particularly confectionery industry and frying industry; Liquid oils is owing to contain high-load unsaponifiables, and this unsaponifiables contains high-load bioactive ingredients, so liquid oils can be widely used for daily use chemicals and pharmaceutical industries.
Preferably, this method also comprises:
(b) the second road dry method branch is carried:
Under-5 ℃ to 20 ℃ growing the grain temperature, to the enrichment that obtains in the step (a) liquid oils of nutritive substance, promptly stock oil (b ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
At 1-40 crust, preferably under the pressure of 15 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.This liquid oils can account for 68 weight % or higher of stock oil (b ') gross weight.
Preferably, this method also comprises:
(c) the 3rd road dry method branch is carried:
Under-5 ℃ to 10 ℃ growing the grain temperature, to the enrichment that obtains in the step (b) liquid oils of nutritive substance, promptly stock oil (c ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
At 1-40 crust, preferably under the pressure of 30 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.This liquid oils can account for 76 weight % or higher of stock oil (c ') gross weight.
Preferably, this method also comprises: at the step (a) and (b) with before the one or more steps (c), in stock oil (a '), (b ') and/or (c '), add crystal seed to help growing the grain, wherein, described crystal seed comprises the hydrogenant grease, the deep hydrogenation product of for example described stock oil (a '), (b ') and/or (c '), and wax; The addition of described crystal seed is about 5 weight % (can decide as the case may be, be generally the 0.2-15 weight % of corresponding step stock oil), in the weight of described stock oil (a '), (b ') or (c ').
Preferably, at the step (a) and (b) with before the one or more steps (c), stock oil (a '), (b ') and/or (c ') are carried out pre-treatment, wherein, described pre-treatment comprises hydrogenation (comprise all kinds of branches propose), mixes (stock oil itself and other greasy mixing) and transesterify (stock oil itself and other greasy transesterify comprise at random and directed inter-esterification).
Preferably, the vegetables oil that uses among the present invention can be selected from shea butter, rapeseed oil, soybean oil, jojoba oil, lanolin, raisin seed oil, Oenothera oil, linseed oil and sunflower seed oil, preferred shea butter.
The enrichment of using the inventive method to separate to obtain the unsaponifiable matter content in the liquid oils of nutritive substance be 3-30 weight %, preferably 8.6-16.9 weight % is in the weight of described liquid oils.
Major advantage of the present invention is:
Adopt the dry method fractionation technology that vegetables oil or its modified grease are carried out solid-liquid separation, exempt existing solvent branch and carried the middle objectionable impurities-acetone that adopts, make solid part and liquid portion in the grease self separate, be a kind of, safety lower, tooling cost to the production unit requirement lower, be fit to the technology promoted; And the present invention can adopt together, two roads or three road dry method fractionation technologies, has obtained the higher liquid oils of nutritive substance enrichment degree thereby separate.
Embodiment
Further set forth the present invention below in conjunction with specific embodiment.But, should be understood that these embodiment only are used to the present invention is described and do not constitute limitation of the scope of the invention.The test method of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Except as otherwise noted, all per-cent and umber are by weight.
Embodiment 1: shea butter is carried out three road dry method branches carry
(i) the first road dry method branch is carried: earlier shea butter (available from Ghana special grease Industrial Co., Ltd (GHANA SPECIALTY FATS INDUSTRIES LIMITED)) is carried out the normal pressure growing the grain, concrete steps and processing condition are as shown in the table:
| Step | Temperature (℃) | Temperature fall time (minute) | Constant temperature time (minute) | This step total time (minute) | Stirring velocity (rpm) |
| ??1 | ??55 | ??-- | ??-- | ??80 | ??50 |
| ??2 | ??30 | ??10 | ??50 | ??60 | ??50 |
| ??3 | ??28 | ??10 | ??200 | ??100 | ??20 |
| ??4 | ??24 | ??10 | ??100 | ??110 | ??15 |
| Step | Temperature (℃) | Temperature fall time (minute) | Constant temperature time (minute) | This step total time (minute) | Stirring velocity (rpm) |
| ??5 | ??23 | ??10 | ??60 | ??100 | ??15 |
After crystallization, grease becomes the mixture of solid oil and liquid oils, next by press filtration solid oil is separated with liquid oils.This road step growing the grain temperature is 23 ℃-24 ℃ among this embodiment.
Press filtration 5 bar pressures.The liquid oils that obtains (" F1-embodiment 1 ") accounts for 65 weight % of stock oil weight.
(ii) the second road dry method branch is carried: the liquid oils of using the first road dry method branch to carry is raw material, and adds 5% the crystal seed account for liquid oils weight that the first road branch puies forward, and this crystal seed can be the deep hydrogenation product of the liquid oils that the first road branch carries.Concrete steps and processing condition are as shown in the table:
| Step | Temperature (℃) | Temperature fall time (minute) | Constant temperature time (minute) | This step total time (minute) | Stirring velocity (rpm) |
| ??1 | ??30 | ??-- | ??-- | ??80 | ??50 |
| ??2 | ??20 | ??10 | ??50 | ??60 | ??50 |
| ??3 | ??17 | ??10 | ??200 | ??120 | ??20 |
| ??4 | ??15 | ??10 | ??100 | ??120 | ??15 |
| ??5 | ??13 | ??10 | ??60 | ??160 | ??15 |
After the crystallization, grease becomes the mixture of solid oil and liquid oils, next by press filtration solid oil is separated with liquid oils.This road step growing the grain temperature is 13 ℃-15 ℃ among this embodiment.
Press filtration 15 bar pressures.The liquid oils that obtains (" F2-embodiment 1 ") accounts for 68 weight % of this step raw material weight.
(iii) the 3rd road dry method branch is carried: the liquid oils of using the second road dry method branch to carry is raw material, and adds 5% the crystal seed account for liquid oils weight that the second road branch puies forward, and this crystal seed can be the deep hydrogenation product of the liquid oils that the second road branch carries.Concrete steps and processing condition are as shown in the table:
| Step | Temperature (℃) | Temperature fall time (minute) | Constant temperature time (minute) | This step total time (minute) | Stirring velocity (rpm) |
| ??1 | ??18 | ??-- | ??-- | ??80 | ??50 |
| ??2 | ??10 | ??10 | ??50 | ??60 | ??50 |
| Step | Temperature (℃) | Temperature fall time (minute) | Constant temperature time (minute) | This step total time (minute) | Stirring velocity (rpm) |
| ??3 | ??6 | ??10 | ??200 | ??120 | ??20 |
| ??4 | ??4 | ??10 | ??100 | ??120 | ??15 |
| ??5 | ??2 | ??10 | ??60 | ??160 | ??15 |
After the crystallization, grease becomes the mixture of solid oil and liquid oils, next by press filtration solid oil is separated with liquid oils.This road step growing the grain temperature is 2 ℃-4 ℃ among this embodiment.
Press filtration 30 bar pressures.The liquid oils that obtains (" F3-embodiment 1 ") accounts for 76 weight % of this step raw material weight.
After three road dry method branches were carried, the total yield of " F3-embodiment 1 " was 33.6%,, accounted for 33.6% of shea butter that is.
Shown in the concrete following Table I of experimental result.
Embodiment 2: shea butter is carried out two road dry method branches carry
Similar described in crystallisation step and the embodiment 1, different is adopts two road dry method branches to carry, and wherein the last growing the grain temperature carried of the first road dry method branch is 20 ℃, and the last growing the grain temperature that the second road dry method branch is carried is 2 ℃ (can add the hydrogenant grease as crystal seed).
Embodiment 3:
With the liquid oils that the first road dry method branch is carried or the second road dry method branch is carried among the embodiment 1 is raw material, also can directly buy Butyrospermum Parkii grease (shea olein) (available from Ghana special grease Industrial Co., Ltd) is raw material, carry out the dry method branch and carry, wherein, the growing the grain temperature is 0 ℃ (can add crystal seed).
Embodiment 4:
With the liquid oils that the first road dry method branch is carried or the second road dry method branch is carried among the embodiment 1 is raw material, also can directly buy Butyrospermum Parkii grease (available from Ghana special grease Industrial Co., Ltd) is raw material, earlier with raw material hydrogenation (fusing point to 30 ℃ about), the dry method branch is carried again, wherein, the growing the grain temperature that the first road dry method branch is carried is 18 ℃, obtains liquid oils " F1-embodiment 4 ", the growing the grain temperature that the second road dry method branch is carried is 9 ℃, obtains liquid oils " F2-embodiment 4 ".
Shown in the concrete following Table I of experimental result.
Comparative example:
According to patent documentation WO 99/63031, EP 1084215 and US 6552208, it is as follows that branch is put forward step: (1) mixes 100ml shea butter and 500ml acetone, and (0.5 ℃/minute) cools to 4 ℃ of growing the grains, press filtration at a slow speed, distillation acetone obtains liquid oils " F1-comparative example "; (2) getting 100g liquid oils " F1-comparative example " and 400ml acetone mixes, earlier cool to-12 ℃ for-0.5 ℃/minute from 10 ℃, ℃/minute cool to-20 ℃ of growing the grains, press filtration with cooling rate-0.1 again from-12 ℃ with cooling rate, distillation acetone is got liquid oils " F2-comparative example " again.
Shown in the concrete following Table I of experimental result.
Table I
| F1-embodiment 1 | F2-embodiment 1 | F3-embodiment 1 | F1-embodiment 4 | F2-embodiment 4 | The F1-comparative example | The F2-comparative example | |
| Unsaponifiable matter content (%) | ??8.6 | ??12.3 | ??16.8 | ??12.6 | ??16.9 | ??10.2 | ??16.2 |
| Total yield (%) | ??65 | ??44.2 | ??33.6 | ??63 | ??41.6 | ??52 | ??34.8 |
Can find out significantly that from last Table I dry method branch of the present invention is carried and both reached the effect that the acetone branch is put forward in the prior art, the harm of having avoided acetone to bring again.
Application examples: sun care preparations is used formula examples (weight %)
The concrete prescription of sun care preparations is as shown in the table:
| Shea butter two road branches are put forward liquid oils | ??2-6 |
| Zinic stearas | ??1 |
| Microcrystalline Wax | ??1 |
| ??C 16-18Acid ester in the different ninth of the ten Heavenly Stems | ??15 |
| The p-methoxycinnamic acid monooctyl ester | ??6 |
| Citric acid | ??0.02 |
| Glycerine | ??5 |
| Sal epsom | ??0.5 |
| Essence | In right amount |
| Water | To 100 |
All quote in this application as a reference at all documents that the present invention mentions, just quoted as a reference separately as each piece document.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. one kind is carried out the method for solid-liquid separation with enrichment nutritive substance wherein to vegetables oil or its modified grease, and this method may further comprise the steps:
(a) the first road dry method branch is carried:
Under-5 ℃ to 35 ℃ growing the grain temperature, to vegetables oil or its modified grease, promptly stock oil (a ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust, the mixture of gained is carried out press filtration, the liquid oils of nutritive substance that obtained enrichment.
2. the method for claim 1 is characterized in that, this method also comprises:
(b) the second road dry method branch is carried:
Under-5 ℃ to 20 ℃ growing the grain temperature, to the enrichment that obtains in the step (a) liquid oils of nutritive substance, promptly stock oil (b ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.
3. method as claimed in claim 2 is characterized in that, this method also comprises:
(c) the 3rd road dry method branch is carried:
Under-5 ℃ to 10 ℃ growing the grain temperature, to the enrichment that obtains in the step (b) liquid oils of nutritive substance, promptly stock oil (c ') carries out the normal pressure growing the grain, obtains the mixture of solid oil and liquid oils; And
Under the pressure of 1-40 crust, the mixture of gained is carried out press filtration, with the liquid oils of nutritive substance that obtained enrichment.
4. as each described method among the claim 1-3, it is characterized in that, this method also comprises: at the step (a) and (b) with before the one or more steps (c), in stock oil (a '), (b ') and/or (c '), add crystal seed, wherein, described crystal seed comprises hydrogenated products and the wax of described stock oil (a '), (b ') and/or (c ').
5. as each described method among the claim 1-3, it is characterized in that, this method also comprises: at the step (a) and (b) with before the one or more steps (c), stock oil (a '), (b ') and/or (c ') are carried out pre-treatment, wherein, described pre-treatment comprises hydrogenation, mixing and transesterify.
6. method as claimed in claim 4, it is characterized in that this method also comprises:, stock oil (a '), (b ') and/or (c ') are carried out pre-treatment at the step (a) and (b) with before the one or more steps (c), wherein, described pre-treatment comprises hydrogenation, mixing and transesterify.
7. as each described method among the claim 1-3, it is characterized in that described vegetables oil is selected from shea butter, rapeseed oil, soybean oil, jojoba oil, lanolin, raisin seed oil, Oenothera oil, linseed oil and sunflower seed oil.
8. as each described method among the claim 1-3, it is characterized in that, the enrichment of gained the unsaponifiable matter content in the liquid oils of nutritive substance be 3-30 weight %, in the weight of described liquid oils.
9. as each described method among the claim 1-3, it is characterized in that the normal pressure growing the grain in the described step (a) carries out under 5-30 ℃.
10. method as claimed in claim 7 is characterized in that described vegetables oil is a shea butter.
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| CN102321500A (en) * | 2011-08-24 | 2012-01-18 | 河南工业大学 | Efficient method for producing high-quality antifreeze tea oil |
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| CN102321500A (en) * | 2011-08-24 | 2012-01-18 | 河南工业大学 | Efficient method for producing high-quality antifreeze tea oil |
| CN102719311A (en) * | 2012-03-23 | 2012-10-10 | 天津龙威粮油工业有限公司 | Dry fractionation method for palm oil |
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| CN106367202B (en) * | 2015-07-22 | 2019-10-15 | 中粮营养健康研究院有限公司 | Shorten cotton seed oil and proposes the purposes of the method for time, the fractionation method of cottonseed oil and deep hydrogenation vegetable oil as crystallization-promoter |
| CN109315568A (en) * | 2017-12-26 | 2019-02-12 | 丰益(上海)生物技术研发中心有限公司 | Fat or oil composition, its purposes and the food containing fat or oil composition |
| CN110915943A (en) * | 2019-12-18 | 2020-03-27 | 天津农学院 | Method for extracting beef oil |
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