CN115261148B - Application of eutectic solvent in grease dehydration - Google Patents
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- CN115261148B CN115261148B CN202211044310.4A CN202211044310A CN115261148B CN 115261148 B CN115261148 B CN 115261148B CN 202211044310 A CN202211044310 A CN 202211044310A CN 115261148 B CN115261148 B CN 115261148B
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/04—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fats or fatty oils
- C11C3/10—Ester interchange
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Abstract
The invention discloses an application of a eutectic solvent in grease dehydration, wherein a hydrogen bond acceptor of the eutectic solvent is betaine, zinc chloride or proline, and a hydrogen bond donor is levulinic acid, malic acid, lactic acid, acetamide, hexanediol, glucose or fructose; the grease is liquid grease, solid grease or mixed grease. The natural eutectic solvent constructed by the invention is used as a strong polar solvent to destroy a microemulsion system in which grease exists, so that moisture is released from the grease, and meanwhile, the solvent is used as a medium to have a dehydration function, the dehydration process is not needed to be carried out by vacuum filtration, and the cost is reduced, so that the technical teaching does not exist in the prior art. The method can be quickly separated from the oil phase, the dehydration process is quickened, the dehydration time can be shortened to be within 1h, the product is easy to separate and purify, the solvent system can be recycled in a plurality of batches, the production cost is reduced, and the method has better economical efficiency and environmental protection.
Description
Technical Field
The invention belongs to the field of grease processing, and particularly relates to application of a eutectic solvent in grease dehydration.
Background
Baked fats and oils are one of the essential raw materials for the production of baked goods, and they play a very important role in baked goods. At present, the grease used for baking food in the market is mainly universal plastic fat such as margarine, shortening, butter and the like, and the base oil is hydrogenated oil, refined animal fat, refined vegetable fat or a simple mixture of the two. The existing general plastic fat for baked food has the problems of high saturation, high trans-fat and the like. At the same time, the world health organization also publishes a thorough 'cleaning plan' of trans-fat, namely after 2023, all foods are forbidden to add trans-fat, which is a bottleneck problem of high-quality development of the current baked food industry.
Transesterification is one of the oil and fat modification techniques, and is favored in the preparation of zero-trans-plastic fats. The base oil and fat can make up the deficiency of natural oil and fat through transesterification reaction, and the base oil and fat product with better plasticity and consistency can be processed, so that more healthy and nutritional edible oil and fat can be used as special baking oil and fat for baking foods, and the quality and nutrition of the baking foods are integrally improved.
The current methods for catalyzing transesterification can be divided into chemical catalysis transesterification and enzymatic catalysis transesterification, and the methods have extremely high requirements on the moisture content in a catalytic system and mainly are characterized in that: on one hand, the chemical catalytic transesterification catalyst usually adopts sodium methoxide with super strong alkali, so that sodium hydroxide and methanol are easily generated by reaction with moisture, and the sodium methoxide loses catalytic capability due to trace moisture and simultaneously saponification phenomenon is generated; on the other hand, the enzyme catalysis transesterification catalyst is generally lipase, and because the lipase has catalysis versatility, trace water in a catalysis system is extremely easy to cause the lipase to catalyze grease to generate hydrolysis reaction, so that a large amount of free fatty acid is formed, and the subsequent grease deacidification and refining procedures are increased. Therefore, the grease must be dehydrated before the raw oil of baked grease is prepared by transesterification reaction, so as not to deactivate the catalyst or induce hydrolysis side reaction, and influence the quality of the product.
In the prior art, when the baking raw oil is subjected to transesterification pretreatment, the moisture is usually removed by vacuum, heating is assisted, the treatment time is long, the energy consumption is high, grease is easily oxidized by heating, and the quality of the baking base grease is finally affected.
Disclosure of Invention
The invention aims to provide the application of the eutectic solvent in grease dehydration, and the peroxide value and acid value of grease are reduced while the grease is dehydrated.
The aim of the invention is achieved by the following technical scheme:
the application of the eutectic solvent in grease dehydration;
the eutectic solvent is characterized in that a hydrogen bond acceptor is betaine, zinc chloride or proline, and a hydrogen bond donor is levulinic acid, malic acid, lactic acid, acetamide, hexanediol, glucose or fructose;
the grease is liquid grease, solid grease or liquid-solid mixed grease (hereinafter referred to as mixed grease); the liquid/solid refers to the state of grease at room temperature;
the liquid grease is soybean oil, rapeseed oil, peanut oil or rice bran oil (rice oil);
the solid grease is lard, palm oil or coconut oil.
Preferably, when the grease is liquid grease, the hydrogen bond acceptor/donor combination of the eutectic solvent is betaine/malic acid, betaine/lactic acid or proline/lactic acid, and the dehydration efficiency of the liquid grease is higher under the combination;
further preferably, the liquid oil is rapeseed oil, and the peroxide value of the oil is reduced while the dehydration efficiency is improved.
Preferably, when the grease is solid grease, the hydrogen bond acceptor of the eutectic solvent is proline or betaine, the hydrogen bond donor is levulinic acid or lactic acid, and the dehydration efficiency of the solid grease is higher under the combination.
Preferably, when the grease is mixed grease, the hydrogen bond acceptor of the eutectic solvent is proline or betaine, the hydrogen bond donor is malic acid, and under the combination, the dehydration efficiency of the solid grease is higher;
further preferably, in the mixed oil, the volume ratio of the liquid oil to the solid oil is 3:7-7:3, so that not only the dehydration efficiency of the mixed oil is improved, but also the peroxide value and the acid value of the mixed oil are reduced.
The application of the eutectic solvent in grease dehydration comprises the following steps:
mixing the eutectic solvent with grease, carrying out water bath reaction for 0.5-1 h at 50-60 ℃, centrifuging after dehydration is finished, wherein the upper oil phase is the dehydrated grease, the lower oil phase is the eutectic solvent, and recycling the oil phase;
for liquid grease or solid grease, the water bath temperature is preferably 60 ℃; for mixed grease, the water bath temperature is preferably 55 ℃;
preferably, the mass ratio of the grease to the eutectic solvent is 20:1-10:1.
The eutectic solvent is prepared by the following method:
mixing a hydrogen bond donor and a hydrogen bond acceptor, and heating in a water bath until a transparent liquid is formed;
preferably, the molar ratio of the hydrogen bond donor to the hydrogen bond acceptor is 2:1 to 1:1.
Preferably, the heating temperature in the water bath is 80-100 ℃.
The invention uses the eutectic solvent for grease dehydration, which is obviously characterized in that the grease is destroyed by the strong polar natural eutectic solvent to contain a water microemulsion system, so that water is released from the microemulsion system, the natural eutectic solvent with excellent hydrophilicity has hydrogen bond interaction, a new hydrogen bond network is formed by solvent components and water molecules, the water molecules in the grease are rapidly captured and extracted in a solvent phase, the dehydration process is continued, the solvent phase is rapidly separated from an oil phase, the multi-batch utilization of the solvent is realized, and the cost is reduced.
Meanwhile, the eutectic solvent has strong polarity, can finish rapid dehydration in a short time, reduces the contact time of grease and air, effectively reduces the oxidation of grease, and meanwhile, the grease oxidation products are generally small polar molecules such as peroxy free radicals, aldehydes and the like, and can extract the grease oxidation products during the dehydration process, so that the peroxide value of the grease is inhibited from rising during the dehydration process. The eutectic solvent has special dissolving capacity, and certain solvent systems have certain extraction effect on free fatty acid in grease, so that the content of the free fatty acid in the grease is reduced, and the acid value of the grease is reduced.
Compared with the prior art, the invention has the following advantages and effects:
(1) The natural eutectic solvent constructed by the invention is used as a strong polar solvent to destroy a microemulsion system in which grease exists, so that moisture is released from the grease, and meanwhile, the solvent is used as a medium to have a dehydration function, the dehydration process is not needed to be carried out by vacuum filtration, and the cost is reduced, so that the technical teaching does not exist in the prior art.
(2) The dehydrated oil and fat has extremely low water content, can be directly used for subsequent transesterification catalysis, has no side reaction, and has small oil loss and good oil product stability.
(3) The method can be quickly separated from the oil phase, the dehydration process is quickened, the dehydration time can be shortened to be within 1h, the product is easy to separate and purify, the solvent system can be recycled in a plurality of batches, the production cost is reduced, and the method has better economical efficiency and environmental protection.
(4) The natural eutectic solvent is a solvent formed by food source components such as choline derivatives, organic acids and the like, has the advantages of safety, no toxicity, low cost, biodegradability and the like, has simple process and strong continuous operation when being applied to dehydration treatment in baking grease, and has application potential of replacing the traditional dehydrating agent in the grease processing field.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto.
Information about edible fats and oils and natural eutectic solvents in the following examples is as follows:
(1) The acid value and peroxide value of the edible oil in the examples are shown in Table 1 below.
TABLE 1 initial acid value, peroxide value and moisture content of edible oil
(2) Levulinic acid, malic acid, lactic acid, acetamide, hexanediol, glucose, fructose, proline, betaine, and zinc chloride are all purchased from Shanghai Ala Biochemical technologies, inc., and zinc chloride, malic acid, glucose, fructose, proline, acetamide, betaine are solid powders at room temperature and levulinic acid, lactic acid, and hexanediol are liquids.
Example 1
Zinc chloride and acetamide are weighed and mixed according to the mol ratio of 1:1, the total mass is 5g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 1h to form transparent liquid (namely eutectic solvent). Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed soybean oil/70 g of lard, 50g of soybean oil/50 g of lard, 70g of soybean oil/30 g of lard, adding into the solvent (namely eutectic solvent), heating in a water bath until the grease is completely melted, stirring the mixture in the water bath at 50 ℃ for reacting for 1h at 250rpm, centrifuging, and taking the upper grease to measure the moisture, peroxide value, acid value and grease yield index for detection and analysis.
The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 2
Zinc chloride and hexanediol are weighed and mixed according to the mol ratio of 1:2, the total mass is 10g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 1h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed soybean oil/70 g of palm oil, 50g of soybean oil/50 g of palm oil and 70g of soybean oil/70 g of palm oil in different reaction kettles, heating in a water bath until the oil is completely melted, reacting the mixture in the water bath at 60 ℃ at 200rpm for 1h, centrifuging, and taking upper-layer oil to measure the moisture, peroxide value, acid value and oil yield index for detection and analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 3
Weighing betaine and glucose according to a molar ratio of 1:1, the mixture is added into a round bottom flask in turn, and the mixture is placed in a water bath with continuous stirring at 100 ℃ for 1h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed soybean oil/70 g of coconut oil, 50g of soybean oil/50 g of coconut oil, 70g of soybean oil/30 g of coconut oil in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture in the water bath at 50 ℃ at 300rpm for 1h, centrifuging, and taking upper grease to measure the moisture, peroxide value, acid value and grease yield index for detection and analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 4
Weighing betaine and fructose, mixing according to a molar ratio of 1:1, adding 10g of total mass into a round bottom flask in sequence, and placing in a water bath at 100 ℃ and continuously stirring for 1h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rapeseed oil/70 g of lard, 50g of rapeseed oil/50 g of lard, 70g of rapeseed oil/30 g of lard in different reaction kettles, adding the mixture into the solvent, heating in a water bath until the grease is completely melted, stirring the mixture in the water bath at 60 ℃ for reacting for 1h at 250rpm, centrifuging, and taking upper grease for measuring the moisture, peroxide value, acid value and grease yield index detection analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 5
Weighing betaine and malic acid, mixing according to a molar ratio of 1:1, adding 10g of total mass into a round bottom flask sequentially, and placing in a water bath at 80 ℃ and continuously stirring for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rapeseed oil/70 g of palm oil, 50g of rapeseed oil/50 g of palm oil, 70g of rapeseed oil/30 g of palm oil in different reaction kettles, adding the mixture into the solvent, heating in a water bath until the grease is completely melted, reacting the mixture for 0.5h at a water bath stirring speed of 300rpm at 50 ℃, centrifuging, and taking upper grease for measuring the moisture, peroxide value, acid value and grease yield index detection analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 6
Proline and malic acid are weighed and mixed according to the molar ratio of 1:1, the total mass is 5g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 1h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rapeseed oil/70 g of coconut oil, 50g of rapeseed oil/50 g of coconut oil and 30g of rapeseed oil/30 g of coconut oil in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture at the temperature of 60 ℃ in the water bath at 250rpm for 1h, centrifuging, and taking upper grease to measure the moisture, peroxide value, acid value and grease yield index, detecting and analyzing. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 7
Proline and levulinic acid are weighed and mixed according to the molar ratio of 1:2, the total mass is 10g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil in different reaction kettles, mixing 30g of peanut oil/70 g of lard oil, 50g of peanut oil/50 g of lard oil, adding 30g of peanut oil/70 g of lard oil into the solvent, heating in a water bath until the grease is completely melted, reacting the mixture for 0.5h under stirring in the water bath at 60 ℃ at 200rpm, centrifuging, and taking upper grease to measure the moisture, peroxide value, acid value and grease yield index, and detecting and analyzing. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 8
Weighing betaine and levulinic acid, mixing according to the mol ratio of 1:1, adding 5g of total mass into a round bottom flask in sequence, and placing in 80 ℃ and continuously stirring in a water bath for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil in different reaction kettles, mixing 30g of peanut oil/70 g of palm oil, 50g of peanut oil/50 g of palm oil, adding 30g of peanut oil/70 g of palm oil into the solvent, heating in a water bath until the grease is completely melted, stirring the mixture in the water bath at 50 ℃ for reacting for 1h at 250rpm, centrifuging, and taking upper grease for measuring the moisture, peroxide value, acid value and grease yield index detection analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 9
Weighing betaine and lactic acid, mixing according to a molar ratio of 1:2, adding 10g of total mass into a round bottom flask sequentially, and placing in a water bath at 80 ℃ and continuously stirring for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed peanut oil/70 g of coconut oil, 50g of peanut oil/50 g of coconut oil and 30g of peanut oil/30 g of coconut oil in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture for 0.5h at the water bath stirring speed of 250rpm, centrifuging, taking upper grease, and measuring the moisture, peroxide value, acid value and grease yield index detection and analysis. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 10
Proline and lactic acid are weighed and mixed according to the molar ratio of 1:1, the total mass is 5g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rice bran oil/70 g of lard, 50g of rice bran oil/50 g of lard, 70g of rice bran oil/30 g of lard in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture in the water bath at 50 ℃ at 300rpm for 1h, centrifuging, taking the upper grease, and measuring the moisture, peroxide value, acid value and grease yield index, and detecting and analyzing. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 11
Proline and lactic acid are weighed and mixed according to the molar ratio of 1:1, the total mass is 5g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rice bran oil/70 g of palm oil, 50g of rice bran oil/50 g of palm oil, 70g of rice bran oil/30 g of palm oil in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture in the water bath at 55 ℃ at 300rpm for 1h, centrifuging, taking the upper grease, and measuring the moisture, peroxide value, acid value and grease yield index, and detecting and analyzing. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Example 12
Proline and lactic acid are weighed and mixed according to the molar ratio of 1:1, the total mass is 5g, the mixture is sequentially added into a round bottom flask, and the round bottom flask is placed in a water bath with continuous stirring at 80 ℃ for 0.5h to form transparent liquid. Respectively weighing 100g of baking raw material liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil, 30g of mixed rice bran oil/70 g of coconut oil, 50g of rice bran oil/50 g of coconut oil, 70g of rice bran oil/30 g of coconut oil in different reaction kettles, heating in a water bath until the grease is completely melted, reacting the mixture in the water bath at 60 ℃ at 300rpm for 1h, centrifuging, taking the upper grease, and measuring the moisture, peroxide value, acid value and grease yield index, and detecting and analyzing. The lower eutectic solvent is recovered for grease dehydration again, and the dehydration efficiency is not obviously reduced under continuous 5 batches.
Comparative example 1
Respectively weighing 100g of liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid lard, palm oil and coconut oil serving as baking raw materials in different reaction kettles, weighing 100g of the mixed oil according to different proportions in the embodiment 1, heating in a water bath until the oil is completely melted, stirring the mixture in the water bath at 100 ℃ for 300rpm for 6 hours, centrifuging, taking the upper-layer oil, and measuring the moisture, peroxide value, acid value and oil yield index, and detecting and analyzing.
Comparative example 2
The anhydrous sodium sulfate with the mass of 20g is weighed, added into a round bottom flask, placed in 80 ℃ and continuously stirred in a water bath for 1h to form transparent liquid. Weighing 100g of liquid oil soybean oil, rapeseed oil, peanut oil, rice bran oil, solid oil lard, palm oil and coconut oil serving as baking raw materials respectively in different reaction kettles, weighing 100g of mixed oil according to different proportions in the embodiment 1, heating in a water bath until the oil is completely melted, stirring the mixture in the water bath at 50 ℃ for 200rpm for reacting for 1h, centrifuging, taking the upper layer oil, and measuring the moisture, peroxide value, acid value and oil yield index, and detecting and analyzing.
The dehydration efficiency, peroxide value, acid value, and oil yield index test results of the liquid oil, solid oil, and mixed oil in each example and comparative example are shown in tables 2, 3, and 4, respectively, and the dehydration efficiency after the eutectic solvent is used in a plurality of batches is shown in table 5.
As can be seen from table 2, the natural eutectic solvent system can significantly improve the efficiency of liquid grease dehydration, especially the hydrogen bond acceptors betaine and malic acid or lactic acid (examples 5 and 9) and proline and lactic acid (example 12) have certain advantages.
The data in table 3 show that the effect of the natural eutectic solvent system on the dehydration of solid grease, in particular, the hydrogen bond donor levulinic acid or lactic acid, the hydrogen bond acceptor proline or betaine (examples 7-9 and 12) has significant advantages over other systems, can effectively inhibit the increase of peroxide value and acid value and maintain the quality of the baking raw oil relative to the comparative example, and realizes multi-batch utilization.
The data in table 4 shows the effect of the natural eutectic solvent on the dehydration treatment of solid-liquid mixed oil, and the data show that the hydrogen bond donor malic acid and the hydrogen bond acceptor betaine or proline (example 5 and example 6) have better application effects than other systems, so that the quality of the baked raw material oil is stable after the dehydration treatment of the natural eutectic solvent relative to the suction filtration system (comparative example 1), and the multi-batch utilization is realized.
The temperature is an important factor affecting the dehydration of the natural eutectic solvent, and it is known through analysis that the dehydration treatment of the liquid or solid oil shows that the efficiency of the system dehydration increases with the increase of the temperature (examples 10, 11 and 12 in tables 1 and 2), but the mixed oil dehydration efficiency of the mixed oil increases with the temperature and then decreases with the increase of the temperature (examples 10, 11 and 12 in table 3) without similar results for the solid and liquid mixed oils.
The data in table 5 shows the dehydration effect of the eutectic solvent batch recycling, and the analysis of the results shows that the eutectic solvent system of the invention can realize multi-batch utilization without obvious reduction of dehydration efficiency when being used in the grease dehydration process, and the comparison example 1 and the comparison example 2 can not realize batch utilization, which indicates that the natural eutectic solvent constructed by the invention has sustainability, reduces the use of solvent dosage and reduces the production cost.
In conclusion, the peroxide value and acid value index detection of the grease after the natural eutectic solvent constructed by the invention is treated and dehydrated accords with the national food safety regulation range. Compared with a suction filtration system (comparative example 1), the natural eutectic solvent system can be used for dewatering liquid oil, solid oil and solid-liquid mixed grease, realizes multi-batch utilization and has more economical efficiency and environmental protection compared with an anhydrous sodium sulfate system (comparative example 2). Therefore, the natural eutectic solvent has good potential value in grease dehydration.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (5)
1. The application of the eutectic solvent in grease dehydration is characterized in that:
the eutectic solvent has a hydrogen bond acceptor of betaine and a hydrogen bond donor of lactic acid, and the molar ratio of the two is 1:2;
the grease is liquid grease, solid grease or mixed grease;
in the mixed grease, the volume ratio of the liquid grease to the solid grease is 3:7-5:5.
2. The use according to claim 1, characterized in that:
the liquid grease is soybean oil, rapeseed oil, peanut oil or rice bran oil;
the solid grease is lard, palm oil or coconut oil.
3. Use according to claim 1, characterized by comprising the steps of:
mixing the eutectic solvent with grease, carrying out water bath reaction at 50-60 ℃ for 0.5-1 h, centrifuging after dehydration, wherein the upper oil phase is the grease after dehydration, and the lower oil phase is the eutectic solvent, and recycling the grease after recovery.
4. A use according to claim 3, characterized in that: for liquid grease or solid grease, the water bath temperature is 60 ℃; for the mixed fat, the water bath temperature was 55 ℃.
5. A use according to claim 3, characterized in that: the mass ratio of the grease to the eutectic solvent is 20:1-10:1.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123716A (en) * | 1982-07-17 | 1984-02-08 | British Petroleum Co Plc | Electrostatic separation of oil/water emulsions |
| CN112048337A (en) * | 2020-09-01 | 2020-12-08 | 宁波锋成先进能源材料研究院有限公司 | Low-temperature demulsifier and preparation method thereof |
| CN113061486A (en) * | 2021-04-09 | 2021-07-02 | 广东省农业科学院蚕业与农产品加工研究所 | Method for removing free fatty acid in grease through enzyme catalysis |
| WO2021209968A1 (en) * | 2020-04-17 | 2021-10-21 | Giuseppe Giampietro | Process for treating soapy pastes deriving from the neutralization and/or saponification of vegetable or animal oils or fats and/or mixtures thereof for the recovery of the substances contained therein |
| CN114525177A (en) * | 2022-02-25 | 2022-05-24 | 陕西科技大学 | Enzymatic deacidification method for high-acid-value oil |
-
2022
- 2022-08-29 CN CN202211044310.4A patent/CN115261148B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2123716A (en) * | 1982-07-17 | 1984-02-08 | British Petroleum Co Plc | Electrostatic separation of oil/water emulsions |
| WO2021209968A1 (en) * | 2020-04-17 | 2021-10-21 | Giuseppe Giampietro | Process for treating soapy pastes deriving from the neutralization and/or saponification of vegetable or animal oils or fats and/or mixtures thereof for the recovery of the substances contained therein |
| CN112048337A (en) * | 2020-09-01 | 2020-12-08 | 宁波锋成先进能源材料研究院有限公司 | Low-temperature demulsifier and preparation method thereof |
| CN113061486A (en) * | 2021-04-09 | 2021-07-02 | 广东省农业科学院蚕业与农产品加工研究所 | Method for removing free fatty acid in grease through enzyme catalysis |
| CN114525177A (en) * | 2022-02-25 | 2022-05-24 | 陕西科技大学 | Enzymatic deacidification method for high-acid-value oil |
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