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Method for extracting oil tea cake proteins

A technology of camellia oil cake and extraction method, which is applied in the fields of peptide preparation, chemical instruments and methods, organic chemistry, etc., can solve problems such as low extraction rate and achieve the effect of improving utilization rate

Inactive Publication Date: 2014-12-10
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, use this method, the camellia oleifera cake protein that extracts from the camellia oleifera cake only accounts for 40-46% by weight of the total protein in the camellia oleifera cake, so there is the defect that the extraction rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] According to a preferred embodiment of the method of the present invention, in order to further improve the yield of the camellia cake meal protein, the preparation method further comprises: using part or all of the camellia cake meal in step (1) with the solids obtained in step (2) Replace and repeat steps (1) to (4); and / or

[0042] Replace all the camellia cake in step (1) with the solids obtained in step (2) and repeat the operations of steps (1) to (4) 2-3 times.

[0043] According to a preferred embodiment of the method of the present invention, in order to further increase the yield of the camellia cake meal protein, the method further comprises: stirring the first mixture for 5-50 minutes before irradiating the first mixture with ultrasonic waves, more preferably 10-30 minutes.

[0044] According to a preferred embodiment of the method of the present invention, in order to further improve the quality of the oil-tea cake meal protein, the method further includes: freez...

Embodiment 1

[0052] This example is used to illustrate the extraction method of camellia oleifera cake protein provided by the present invention.

[0053] (1) Camellia cake with a particle size of 100-120 mesh (purchased from the Institute of Subtropical Forestry, Chinese Academy of Forestry, with an oil content of 8% by weight, without removing tea saponin, according to the literature (Wu Xiaochun, Journal of Yichun University, 2008 The protein content was determined to be 16% by weight according to the method in the fourth issue of 2008, 29-30).) 100 grams were mixed with 33 grams of absolute ethanol and 2700 grams of distilled water and sodium hydroxide was added to adjust the pH to 9.8 to obtain the first mixture. And the first mixture was stirred at room temperature for 20 minutes. Under the conditions of power 950W (relative to the entire first mixture), frequency of 40 kHz and temperature of 40° C., the stirred first mixture was irradiated with ultrasonic waves for 55 minutes to obtain...

Embodiment 2

[0062] This example is used to illustrate the method of the present invention. In this example, the protein of camellia cake meal is extracted according to the following steps:

[0063] (1) Camellia cake with a particle size of 100-120 mesh (purchased from the Institute of Subtropical Forestry, Chinese Academy of Forestry, with an oil content of 8% by weight, according to the literature (Wu Xiaochun, Journal of Yichun University, 2008, Issue 4, 29- 30 pages) method to determine its protein content is 16% by weight) 100 grams, 20 grams of absolute ethanol and 2500 grams of distilled water are mixed and sodium hydroxide is added to adjust the pH to 9.5 to obtain the first mixture, and the first mixture is kept at room temperature Stir for 15 minutes. Under the conditions of a power of 850W (relative to the entire first mixture), a frequency of 25 kHz and a temperature of 35° C., the stirred first mixture was irradiated with ultrasonic waves for 30 minutes to obtain a product after ...

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Abstract

The invention discloses a method for extracting oil tea cake proteins. The method comprises the following steps: 1, radiating a first mixture with supersonic wave to obtain a supersonic wave radiated product; 2, removing solids and an organic phase from the supersonic wave radiated product to obtain a first clear liquid; 3, allowing the first clear liquid to contact with an acid to precipitate proteins in the first clear liquid and obtain an acid contacted product; and 4, separating the precipitated proteins from the acid contacted product. The method provided in the invention allows the oil tea cake proteins extracted from oil tea cakes to account for 50-85wt% of total proteins in the oil tea cakes, so the utilization rate of the oil tea cake proteins is greatly improved; and contents of tea saponins in the oil tea cake proteins extracted through the method of the invention are low.

Description

Technical field [0001] The invention relates to a method for extracting plant protein, in particular, to a method for extracting camellia cake meal protein. Background technique [0002] Camellia oleifera is an important edible oil plant, and a large amount of by-product Camellia dregs will be produced after extracting Camellia seed oil from Camellia oleifera seeds. Camellia cake contains 15-17% by weight of protein, which can be used to extract the protein from the camellia cake. Camellia cake protein is a high-quality protein resource. It contains 17 kinds of amino acids, 8 of which are essential amino acids for the human body, and can be used in the production of medicines, food, feed and other products. Therefore, the extraction of camellia oil cake protein is very important for the utilization of camellia oil resources. [0003] Existing documents (Wu Xiaochun, Journal of Yichun University, 2008, Issue 4, pages 29-30) have reported the extraction method of camellia cake meal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K1/14
Inventor 秦特夫范东斌储富祥王春鹏
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY