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Method for extracting active oil from semen coicis bran by radio-frequency enzyme killing and ethanol assistance

A coix seed bran and auxiliary extraction technology, which is applied in the field of fine processing of agricultural and sideline products, can solve the problems of unfavorable comprehensive processing of rice bran, difficulty in achieving stable rice bran, and protein denaturation of rice bran, so as to shorten the oil production cycle, eliminate the use of enzymes, and save energy. cost effect

Active Publication Date: 2018-02-02
JIANGNAN UNIV
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  • Summary
  • 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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  • Method for extracting active oil from semen coicis bran by radio-frequency enzyme killing and ethanol assistance
  • Method for extracting active oil from semen coicis bran by radio-frequency enzyme killing and ethanol assistance
  • Method for extracting active oil from semen coicis bran by radio-frequency enzyme killing and ethanol assistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Extraction of Coix Seed Bran Active Oil

[0035] The fresh coix seed bran is pulverized without any pretreatment, and pulverized with a Chinese medicine pulverizer to a volume average particle size of about 200μm, and then pulverized with a grinder to a volume average particle size of about 45μm to obtain the raw material for oil extraction.

[0036] The oil extraction raw materials were adjusted at 60°C according to the material-liquid ratio of 1 (g): 5 (mL), the concentration of the ethanol aqueous solution was 30% (v / v), and the pH of the system was adjusted to 7.0 for oil extraction. The reaction time was 2 hours. After the reaction is finished, it is centrifuged at 5000 rpm for 15 minutes to obtain the incompatible four phases-free oil, emulsion, water phase, and residue phase. The free coix seed chaff active oil is separated and 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 ...

Embodiment 2

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

[0039] Use radio frequency technology to inactivate enzymes from fresh coix seed chaff. The radio frequency of the equipment is 27.1MHZ. Power is 6KW, temperature is 60℃, time is 20min; power is 6KW, temperature is 60℃, time is 8min; power is 6KW, temperature is 120℃, time is 20min; power is 6KW, temperature is 120℃, time is 8min; power is 12KW, temperature is 60℃, time is 20min; power is 12KW, temperature is 60℃, time is 8min; power is 12KW, temperature is 120℃, time is 20min; power is 12KW, temperature is 120℃, The time is 8 minutes; after the treatment, the coix seed chaff after the radio frequency treatment is collected.

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

Embodiment 3

[0045] Example 3 Effect of particle size on the extraction of active oil from coix seed bran

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

[0047] The coix seed bran treated by radio frequency was pulverized to a volume average particle size of 500μm, 210μm, 186μm, 175μm, 160μm using a Chinese medicine pulverizer, and then pulverized to a volume average particle size of 200μm, 93μm, 45μm, 45μm, 20μm with a roller compactor. Around, get the raw material for oil extraction.

[0048] The oil extraction raw materials were adjusted at 60°C according to the material-liquid ratio of 1 (g): 5 (mL), the concentration of the ethanol aqueous solution was 30% (v / v), and the pH of the system was adjusted to 7.0 for oil extraction. The reaction time was 2 hours. After the react...

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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 and fat from coix seed bran, and belongs to the technical field of fine processing of agricultural and sideline products. Background technique [0002] Coix seed contains very 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 components far exceeds that of rice. . And it also contains 8 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 by the body. Studies have shown that the coix seed oil extracted from the 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 highly nutritious food and medical food. [...

Claims

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Application Information

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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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