A method for radiofrequency enzyme inactivation and ethanol-assisted extraction of active oil from coix seed bran

A technology of coix seed bran and auxiliary extraction, which is applied in the field of fine processing of agricultural and sideline products, can solve the problems of oil oxidation, it is difficult to achieve stable rice bran, and the heating time is long, and the recovery conditions are simple, the oil production cycle is shortened, and the use of enzymes is eliminated. Effect

Active Publication Date: 2019-11-26
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot air treatment and steam treatment take a long time to heat, which will also cause the oxidation of the oil in it while inactivating the enzyme, and the quality will decline
Moreover, the traditional heating method has poor effect of inactivating enzymes, and the activity of peroxidase is still 27%, which is difficult to achieve the purpose of stabilizing rice bran.
Extrusion and puffing will lead to protein denaturation in rice bran, which is not conducive to the comprehensive processing of rice bran

Method used

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  • A method for radiofrequency enzyme inactivation and ethanol-assisted extraction of active oil from coix seed bran
  • A method for radiofrequency enzyme inactivation and ethanol-assisted extraction of active oil from coix seed bran
  • A method for radiofrequency enzyme inactivation and ethanol-assisted extraction of active oil from coix seed bran

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Coix Seed Bran Active Oil Extraction

[0035] The fresh coix seed bran is not pretreated, only pulverized, crushed with a traditional Chinese medicine pulverizer to a volume average particle size of about 200 μm, and then pulverized with a grinder to a volume average particle size of about 45 μm to obtain the raw material for oil extraction.

[0036] The oil extraction raw materials were extracted at 60°C according to the ratio of material to liquid 1(g):5(mL), the concentration of ethanol aqueous solution was 30% (v / v), and the pH of the system was adjusted to 7.0 for oil extraction, and the reaction time was 2h. After the reaction, centrifuge at 5000 rpm for 15 minutes to obtain incompatible four phases—free oil, emulsion, water phase, and slag phase, and separate to obtain free coix seed bran active oil, which is weighed.

[0037] The free yield is 50.52%, the acid value is 70.5 (KOH) / (mg / g), and the fat content of the residue phase accounts for 18.78% of t...

Embodiment 2

[0038] Example 2 Effect of Radio Frequency Technology on the Extraction of Coix Seed Bran Active Oil

[0039]The fresh coix seed bran is inactivated by radio frequency technology, and the radio frequency frequency of the equipment is 27.1MHZ. The power is 6KW, the temperature is 60°C, and the time is 20min; the power is 6KW, the temperature is 60°C, and the time is 8min; the power is 6KW, the temperature is 120°C, and the time is 20min; 8min; power is 12KW, temperature is 60°C, time is 20min; power is 12KW, temperature is 60°C, time is 8min; power is 12KW, temperature is 120°C, time is 20min; power is 12KW, temperature is 120°C, The time is 8 minutes; after the treatment, collect the barley bran after radiofrequency treatment.

[0040] The coix seed bran after radio frequency treatment is crushed to about 210 μm in volume average particle size with a traditional Chinese medicine pulverizer, and then pulverized with a roller compactor to about 45 μm in volume average particle ...

Embodiment 3

[0045] Example 3 Effect of Particle Size on the Extraction of Coix Seed Bran Active Oil

[0046] The fresh coix seed bran was deactivated by radio frequency technology, the radio frequency frequency was 27.12MHZ, the power was 6KW, the temperature was 120°C, and the time was 12min. After the treatment, the barley bran after radiofrequency treatment was collected.

[0047] The coix seed bran after radio frequency treatment is crushed to a volume average particle size of 500 μm, 210 μm, 186 μm, 175 μm, and 160 μm by a traditional Chinese medicine grinder, and then crushed by a roller compactor to a volume average particle size of 200 μm, 93 μm, 45 μm, 45 μm, 20 μm or so, to obtain the raw material for oil extraction.

[0048] The oil extraction raw materials were extracted at 60°C according to the ratio of material to liquid 1(g):5(mL), the concentration of ethanol aqueous solution was 30% (v / v), and the pH of the system was adjusted to 7.0 for oil extraction, and the reaction ...

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Abstract

The invention discloses a method for extracting active oil from semen coicis bran by radio-frequency enzyme killing and ethanol assistance and belongs to the technical field of fine processing of subsidiary agricultural products. After an enzyme in the semen coicis bran (semen coicis processing leftovers) is rapidly deactivated by utilizing a radio frequency technology, the semen coicis bran is crushed to a certain quantity; then an ethanol water solution is used as an oil extracting medium and a demulsifying agent to replace a lot of enzymes used in a traditional aqueous enzymatic method; theproduction cost of a product is saved and the quality of the product is also optimized; main components and content of the active oil of the semen coicis bran, which is obtained by ethanol-assisted extraction, are the same as those of semen coicis oil extracted from semen coicis. On the basis of an edible oil refining technology, standards of semen coicis oil for injection can be realized by adopting procedures of secondary caustic refining, column chromatography, sterilization and the like. The method disclosed by the invention has the advantages of high oil extraction rate, low cost, good quality and the like and the additional value of the semen coicis bran is improved.

Description

technical field [0001] The invention relates to a method for radiofrequency enzyme inactivation and ethanol-assisted extraction of active oil from coix seed bran, belonging to the technical field of fine processing of agricultural and sideline products. Background technique [0002] Coix seed contains extremely high nutritional value, including 14% protein, 5% fat, 65% carbohydrate, 3% crude fiber, 0.07% calcium, 0.242% phosphorus, and 0.001% iron. The content of these ingredients far exceeds that of rice. . And it also contains 8 kinds of essential amino acids and minerals including leucine, arginine, lysine, and valine, and the ratio is very suitable for the needs of the human body, and it is easier to be absorbed and utilized by the body. Studies have shown that coix seed oil extracted from coix seed has anti-lung cancer, liver cancer, neck cancer, ovarian cancer, and advanced pancreatic cancer in the elderly. Coix seed is widely praised as a high-nutrition food and medi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B1/04C11B1/10C11B3/16
CPCC11B1/04C11B1/10C11B3/16
Inventor 赵伟殷敏侠杨瑞金
Owner JIANGNAN UNIV
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