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A technology of peanut germ and extraction method, applied in the direction of producing fat, edible oil/fat, fat oil/fat production, etc., to achieve the effects of easy release, increased permeability, and improved effect
Inactive Publication Date: 2013-12-18
张瑜
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Problems solved by technology
[0006] In order to solve the problem of unsatisfactory extraction rate of peanut germ oil in the above prior art, the present invention provides a peanut germ with higher extraction rate using compound enzyme treatment oil extraction method
Method used
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Embodiment 1
[0028] The oil content of the peanut germ used is 11%.
[0029] A method for extracting peanut germ oil, comprising the steps of:
[0030] a. Pretreatment, superfinely pulverize the peanut germ for 0.5-1.5min, screen the peanut germ powder with a particle size of 300 mesh, and steam treat it at 100°C for 18min under normal pressure;
[0031] b. Complex enzyme system extraction, under the condition of pH 4, first use cellulase (1.5×10 4 IU / g) and amylase (4.0×10 4 IU / g) enzymatic hydrolysis, the activity ratio of cellulase and amylase is 5:3, the amount of enzyme added accounts for 0.8% of the weight of peanut germ, the reaction time is 6h, the enzyme is deactivated at 100°C for 5min, and then acid protease (enzyme live 2.0 x 10 5 IU / g) Enzymatically hydrolyze peanut germ for 5 hours, the ratio of solid to liquid is 1:4, the amount of enzyme added accounts for 1.0% of the weight of peanut germ, and the enzyme is inactivated at 100°C for 5 minutes to obtain peanut germ hydrol...
Embodiment 2
[0044] A method for extracting peanut germ oil, comprising the steps of:
[0045] a. Pretreatment, superfine grinding and steam heat treatment of peanut germ, ultrafine grinding of peanut germ for 0.5-1.5min, screening of peanut germ powder with a particle size of 400 mesh, steam treatment at 100°C for 22min under normal pressure;
[0046] b. Complex enzyme system extraction, under the condition of pH 6, first use cellulase (enzyme activity 1.5×10 4 IU / g) and amylase (enzyme activity 4.0×10 4 IU / g) enzymatic hydrolysis, the activity ratio of cellulase and amylase is 5:3, the amount of enzyme added accounts for 1.0% of the weight of peanut germ, the reaction time is 6h, the enzyme is inactivated at 100°C for 7min, and then acid protease (enzyme live 2.0 x 10 5 IU / g) Enzymatically hydrolyze peanut germ for 6 hours, the ratio of solid to liquid is 1:6, the amount of enzyme added accounts for 2.0% of the weight of the total peanut germ, and the enzyme is inactivated at 100°C for...
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Abstract
The invention relates to the technical field of agricultural product processing, and particularly relates to an extraction method of peanut germ oil. The extraction method comprises the following steps: crushing peanut germs; firstly, carrying out enzymolysis by cellulase and amylase under a condition that pH is 4-6, wherein the vitality ratio of cellulase toand amylase is 5:3; then, adding acid proteinase for enzymolysis of the peanut germs and deactivating the enzymes to obtain peanut germ hydrolyzing slurry; separating the oil phase to obtain the peanut germ oil; superfine grinding the peanut germs to 300-400 meshes; processing the peanut germs crushed by steam for 18-20 minutes. By adopting compound enzymes, cell walls and intracellular network structures are degraded more thoroughly, so that the oil extraction rate is improved. By adopting superfine grinding treatment, the granularity of the germs is reduced, the surface area of the germs is increased, and the effect of the enzyme is improved. Meanwhile, the germs are effectively prevented from being emulsified. By adopting steam treatment, lipase in the germs is deactivated, and meanwhile, the cell walls are loosened to increase the permeability and facilitate effect of the enzyme, so that oil is more easily released.
Description
[0001] technical field [0002] The invention relates to the technical field of agricultural product processing, in particular to a method for extracting peanut germ oil. Background technique [0003] Peanut germ oil is a kind of grain germ oil made from peanut germ. It concentrates the nutritional essence of peanut, which is rich in unsaturated fatty acids, vitamin E and octacosanol. It is an ideal natural vitamin E, Source of Octacosyl Alcohol. In particular, the content of vitamin E is the highest among vegetable oils, and it has been recognized as a functional oil with nutritional and health effects. my country is a big peanut producing country and also a big peanut consuming country in the world. The peanut germ oil resource is very rich, so it is of great significance to strengthen the development and utilization of peanut germ oil. [0004] Compound enzymatic extraction of vegetable oil is mostly used in cocoa, corn germ, rapeseed, soybean and sunflower abroad, a...
Claims
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