Microwave extraction method for lotus seed protein

An extraction method, lotus seed technology, applied in peptide preparation methods, chemical instruments and methods, organic chemistry, etc., can solve the problems of lye consumption, complicated post-processing, environmental pollution, etc., to improve the extraction rate, shorten the extraction time, The effect of reducing energy consumption

Inactive Publication Date: 2008-07-09
XIANGTAN UNIV
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AI Technical Summary

Problems solved by technology

And consume a large amount of lye, produce a large amount of waste water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Salt extraction, 60 mesh lotus seed powder and 0.1mol L -1 The salt solution was uniformly mixed at 1:6, placed in a microwave reactor, microwave emission power 400W, microwave frequency 915MHz, stirring rate 700rpm, repeated salt extraction 3 times, each 25min, centrifugal (2000rpm) 15min; combined supernatant, Concentrate, pass CO 2 In the concentrated solution, acid precipitation pressure 2atm, CO 2 The volume ratio of the feed amount to the concentrated solution is 0.2:1, and the acid precipitation is allowed to stand for 1h. Filter to obtain the filtrate, centrifuge (2000rpm) the filtrate for 15 minutes to obtain the precipitate, combine the filtrate and the precipitate to obtain the lotus seed protein; add water to adjust the lotus seed protein to a 28% feed liquid, spray dry the feed liquid, and the flow rate of the feed liquid is 120kg h -1 , feed liquid temperature 70 ℃, spray inlet temperature 100 ℃, spray outlet temperature 60 ℃, high-purity lotus seed prot...

Embodiment 2

[0016] For salt extraction, 80 mesh lotus seed powder and 0.3mol L -1 The salt solution was uniformly mixed at 1:9, placed in a microwave reactor, microwave emission power 500W, microwave frequency 2450MHz, stirring rate 500rpm, repeated salt extraction 2 times, each 20min, centrifuged (3000rpm) 10min; combined supernatant, Concentrate, pass CO 2 In the concentrated solution, the acid precipitation pressure is 3 atm, CO 2 The volume ratio of the feed amount to the concentrated solution is 0.15:1, and the acid precipitation is allowed to stand for 1.5 hours. Filter to obtain the filtrate, centrifuge (3000rpm) the filtrate for 10min to obtain a precipitate, combine the filtrate and the precipitate to obtain the lotus seed protein; add water to adjust the lotus seed protein to a 38% feed liquid, spray dry the feed liquid, and the flow rate of the feed liquid is 135kg h -1 , feed liquid temperature 80 ℃, spray inlet temperature 120 ℃, spray outlet temperature 70 ℃, get high-puri...

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PUM

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Abstract

The invention discloses a micro-wave extraction process of lotus seed protein. High purified lotus seed protein powder is obtained through salt extraction, acid deposition, centrifugation and spray-drying under the radiation of microwave. The invention transfers energy which is directly reacted on lotus powder through utilize microwave radiation, and lotus powder is fiercely moved, which can significantly increases extraction speed ratio, shortens extraction time, reduces energy consumption, CO2 and water can form carbonic acid with 1-6atm acid deposition pressure, lotus seed protein is deposited by carbonic acid, thereby no generating waste water, gas and residual. The obtaining rate of protein powder is 26.1 % through the combination of microwave salt extraction and acid deposition, and protein purity in the lotus seed protein powder is high, which can reach 86.2%, and color and taste are excellent.

Description

technical field [0001] The invention relates to a method for extracting lotus seed protein. Background technique [0002] Lotus seed is the seed of lotus, a plant of Nymphaeaceae. It has been favored by people because of its high nutritional content and special nourishing and curative effects. It is one of the most common health food raw materials in my country and Southeast Asia. Lotus seeds are widely distributed in my country, mainly in Hunan, Hubei, Fujian, Zhejiang, Jiangxi, Hebei and other places. Lotus seeds are rich in protein, sugar, vitamins, calcium, phosphorus, iron and other mineral elements necessary for the human body. They are fragrant and nutritious. The protein content of dried lotus seeds is about 25%, and the protein contains 18 kinds of amino acids, with a complete range. It contains eight kinds of amino acids necessary for the human body. The ratio of essential amino acids in lotus seed protein and soybean protein is more in line with WHO regulations ...

Claims

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Application Information

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IPC IPC(8): C07K1/14C07K1/30
CPCY02P20/141
Inventor 曾虹燕邓欣张剑王亚举姜和
Owner XIANGTAN UNIV
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