Method for extracting macadimia nut proteins

An extraction method and technology of nut protein, applied in the extraction field of macadamia nut protein, can solve the problems of low extraction rate of macadamia nut protein and low protein purity, achieve good dissolution effect, improve extraction efficiency, and promote effective separation

Inactive Publication Date: 2014-04-16
NANCHANG UNIV
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  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of low extraction rate of macadamia nut protein and low protein purity, the present invention provides a method for extracting macadamia nut protein, comprising the following steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Cold-pressed degreasing of raw materials: Macadamia nut kernels are crushed in a 2000r / min high-speed grinder for 20 seconds, and the crushed macadamia nuts are dried by infrared rays to a moisture content of 4%. The infrared wavelength is 5 μm, and the heat source temperature is 400 ° C. 10cm; Macadamia nuts irradiated by infrared rays are wrapped with filter cloth and put into the barrel of hydraulic oil press, adjusted to 60MPa, pressed twice at 45°C to collect macadamia nut meal; (2) Fruit meal refinement: weigh Add 1kg of macadamia nut meal, add 10kg of pure water, stir evenly, pass the mixed solution through a colloid mill, and the gap between the stator and rotor of the colloid mill is 30 microns; (3) Homogenization: use 1mol / L NaOH solution to adjust the pH of the macadamia nut meal When the value reaches 9.1, use a homogenizer to homogenize and refine, and the homogenization pressure is 45 MPa; (4) Dynamic ultra-high pressure treatment: the fruit pulp mixtur...

Embodiment 2

[0021] (1) Cold-pressed degreasing of raw materials: Macadamia nut kernels are crushed in a high-speed grinder at 1800r / min for 25 seconds, and the crushed macadamia nuts are dried by infrared rays to a water content of 3%, the wavelength of infrared rays is 6 μm, the temperature of the heat source is 500°C, and the distance between the heat source and the nuts is 8cm; the macadamia nuts irradiated by infrared rays are wrapped with filter cloth and put into the cylinder of hydraulic oil press, the pressure is adjusted to 50-60MPa, pressed 2-3 times at 45-50°C, and the macadamia nut meal is collected; (2) Fruit Meal refinement: Weigh macadamia nut meal, add 12kg of pure water, stir evenly, pass the mixed solution through a colloid mill to refine, the gap between the stator and rotor of the colloid mill is 40 microns; (3) Homogenization: use 1mol / L NaOH solution adjusts the pH value to 9.2, homogenizes and refines with a homogenizer, and the homogenization pressure is 40 MPa; (4...

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Abstract

The invention relates to a method for extracting macadimia nut proteins. The method mainly comprises the following steps of (1) smashing macadimia nuts, and separating oil of the macadimia nuts through infrared treatment and hydraulic cold squeezing; (2) mixing the obtained macadimia nut meal with pure water, treating the mixture through a colloid mill and an alkaline hardening, quenching and homogenizing machine, and then performing dynamic ultrahigh pressure treatment; and (3) adjusting the pH of the fruit meal to an isoelectric point to realize separation, and performing low-temperature spray drying to obtain the macadimia nut proteins. The technology disclosed by the invention is continuous and compact; the product is high in yield and high in quality.

Description

technical field [0001] The invention relates to a method for extracting fruit protein, in particular to a method for extracting macadamia nut protein. Background technique [0002] Macadamia nuts belong to the genus Macadamia of the family Longanaceae, also known as macadamia nuts, macadamia nuts, and Queensland chestnuts. The edible part of the macadamia nut is the kernel, which is crispy, smooth, tender and delicious, with a unique buttery aroma. It is the best quality edible fruit in the world, and has the reputation of "Queen of Dried Fruits" and "King of Nuts in the World". Macadamia nuts are rich in nutrients, with an oil content of 78%, protein 9%, and 8 essential amino acids, as well as minerals and vitamins. Macadamia nut oil contains more than 80% monounsaturated fatty acids, mainly oleic acid and palmitoleic acid, so macadamia nuts are mainly used for frying oil in addition to being eaten as dried fruit. The fried macadamia nut meal protein is a high-quality pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/00
Inventor 钟业俊刘成梅刘伟杨晓会崔晓冰
Owner NANCHANG UNIV
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