Method for extracting lipid from naked oats

A technology for extracting oil and naked oats, applied in edible oil/fat, food preparation, food science, etc., can solve the problems of high cost, small extraction amount, high equipment requirements, etc., to improve efficiency, reduce extraction cost, and reduce extraction time Effect

Inactive Publication Date: 2009-07-08
长春师范学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using crushed naked oats and naked oat bran as raw materials, Soxhlet extractor and CO 2 The supercritical extractor extracts oil compo

Method used

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  • Method for extracting lipid from naked oats
  • Method for extracting lipid from naked oats

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1

[0014] (1) Extract oil from naked oats

[0015] Pass the dry naked oat powder through a 60-mesh sieve, accurately weigh 5.0134g and place it in a 50ml ground-mouth Erlenmeyer flask, take 3 parallel samples, add 25ml ethyl acetate respectively, and ultrasonically extract at 15°C for 1h. The extract was centrifuged in a refrigerated high-speed centrifuge at 8000r / min at 17°C for 30min, the supernatant was passed through a 0.45μm filter membrane, and the extract was combined in a rotary evaporator to recover the solvent under reduced pressure to obtain the oil extracted from naked oats. The electronic balance is weighed, and the average weight of the sample is 0.1862g.

[0016] (2) Sample detection

[0017] The electronic balance accurately weighs 0.1 g of the oily compounds extracted from naked oats, and dissolves them in 1 ml of mixed solvent (n-hexane (v): ethyl acetate (v): methanol (v) = 1:2:3) solution to obtain 0.1g / ml mixed solution of oil and fat compounds...

Example Embodiment

[0018] Example 2

[0019] (1) Extract oil from naked oats

[0020] The dried naked oat sample was processed into powder, passed through a 60-mesh sieve, accurately weighed 5.0214g and placed in a 50ml ground-mouthed Erlenmeyer flask, took 3 parallel samples, added 50ml ethyl acetate, and performed ultrasonic extraction at 25°C for 2h. The extract was centrifuged in a refrigerated high-speed centrifuge at 6000 r / min at 20°C for 40 min, the supernatant was passed through a 0.45 μm filter membrane, and the extract was combined in a rotary evaporator to recover the solvent under reduced pressure to obtain the oil extracted from naked oats. The electronic balance is weighed, and the average weight of the sample is 0.2278g.

[0021] (2) Sample detection

[0022] The electronic balance accurately weighs 0.1 g of the oily compounds extracted from naked oats, and dissolves them in 1 ml of mixed solvent (n-hexane (v): ethyl acetate (v): methanol (v) = 1: 1: 3) solution to obtain 0.1g / ml mix...

Example Embodiment

[0023] Example 3

[0024] (1) Extract oil from naked oats

[0025] The dried naked oat sample was processed into powder, passed through a 60-mesh sieve, accurately weighed 5.0179g and placed in a 50ml ground-necked Erlenmeyer flask, took 3 parallel samples, added 25ml n-hexane, and extracted with ultrasonic at 25°C for 1h. The extract was centrifuged in a refrigerated high-speed centrifuge at 10000 r / min at 17°C for 30 min, the supernatant was passed through a 0.45 μm filter membrane, and the extract was combined in a rotary evaporator to recover the solvent under reduced pressure to obtain the oil extracted from naked oats. Weigh on an electronic balance, and the average weight of the sample is 0.2588g.

[0026] (2) Sample detection

[0027] The electronic balance accurately weighs 0.1 g of the oily compounds extracted from naked oats, and dissolves them in 1 ml of mixed solvent (n-hexane (v): ethyl acetate (v): methanol (v) = 1: 1: 3) solution to obtain 0.1g / ml mixed solution of...

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Abstract

The invention provides a method for extracting grease from avena nuda. Dry avena nuda powder is put in a container; a solvent is added in the powder, wherein, the proportion between the solvent volume (ml) and the mass (g) of the avena nuda powder ranges from 5:1 to 10:1; ultrasonic extraction is carried out, wherein, the extraction temperature is 10-30 DEG C and the extraction time is 1-3h; centrifugal separation is carried out after the extraction is completed, wherein, the parameter of the centrifuge is 6000-10000r/min, the temperature of the centrifugal separation is 15-25 DEG C, and the time of the centrifugal separation is 10-60min; the solvent is eliminated by evaporation to obtain the grease extracted from the avena nuda; and the solvent is n-hexane, ethyl acetate or petroleum ether. The amount of the extracted grease is as 1.4-1.6 times great as the amount of the grease obtained by other extraction methods, the efficiency is improved, the extraction time is greatly reduced and the extraction cost is reduced; besides, the extracted avena nuda grease has excellent DPPH free radical elimination capability and the half elimination rate (IC50) of the free radical is 0.00675g/ml.

Description

technical field [0001] The invention relates to a method for extracting fat from naked oats. Background technique [0002] Naked oats have good nutritional value compared to other grains. The main fat in naked oats is linoleic acid. Linoleic acid is an active ingredient of lipid-lowering drugs. It has the effects of lowering blood pressure and triglycerides, softening capillaries, preventing vascular sclerosis, and delaying human aging. So how to extract a large amount of oil components from naked oats has important research value and broad application prospects. [0003] The methods currently used to extract oil components from naked oats include Soxhlet extractor extraction (Wei Jue et al., Food Science and Technology: 2006 (7): 204-206) and CO 2 Supercritical extraction method (He Wenbing et al., Science and Technology of Food Industry: 2007(4): 97-99). Using crushed naked oats and naked oat bran as raw materials, Soxhlet extractor and CO 2 The supercritical extract...

Claims

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Application Information

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IPC IPC(8): A23D9/02A23L1/29A23L1/10
Inventor 刘春明时东方李丽齐艳娟郑梅竹王强张语迟
Owner 长春师范学院
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