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Method for extracting raffinose from cottonseeds

A technology of raffinose and cottonseed, which is applied in the direction of chemical instruments and methods, oligosaccharides, sugar derivatives, etc., can solve the problems of difficult extraction and utilization of raffinose, low quality of cottonseed meal, environmental impact, etc., and achieve easy operation, The effect of improving the extraction rate and improving the quality

Inactive Publication Date: 2017-08-18
合肥云都棉花有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Provided in the prior art is a mature production method that adopts 6# solvent oil to extract oil and adopts methanol dephenolization to obtain cottonseed protein, but, for the extraction of raffinose contained in cottonseed, lacks a method suitable for industrial production; on the one hand , there are some raffinose and gossypol in the cottonseed meal, the quality of the cottonseed meal is not high, and the discharged waste liquid contains raffinose, which has a certain impact on the environment; on the other hand, raffinose has a wide range of applications in food, feed, health care and other fields application prospects
However, methanol, gossypol, and other impurities are mixed together with raffinose, causing certain difficulties in the extraction and utilization of raffinose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Present embodiment relates to a kind of method extracting raffinose from cottonseed, comprises the following steps:

[0030] (1) Cotton kernels are obtained after cottonseed shelling, cotton kernels are softened and ginned, and cottonseed oil is extracted with solvent oil to obtain cotton meal;

[0031] (2) Add a 60% ethanol solution to the cottonseed at a solid-to-liquid ratio of 1:8, extract for 30 minutes at 55°C, and filter with a leaf filter;

[0032] (3) Send the filtrate obtained in step (2) into a vacuum evaporation device to remove ethanol, and the vacuum degree is -0.09MP;

[0033] (4) Heat the aqueous solution obtained in step (3) to 65°C, adjust its pH to 2, add calcium chloride, the amount of calcium chloride added is 4% of the weight of the aqueous solution obtained in step (3), keep it for 20 minutes, Add diatomaceous earth, filter to obtain the filtrate;

[0034] (5) concentrating the filtrate obtained in step (4) in vacuum to a vacuum degree of 0 to m...

Embodiment 2

[0041] Present embodiment relates to a kind of method extracting raffinose from cottonseed, comprises the following steps:

[0042] (1) Cotton kernels are obtained after cottonseed shelling, cotton kernels are softened and ginned, and cottonseed oil is extracted with solvent oil to obtain cotton meal;

[0043] (2) Add a 75% ethanol solution to the cottonseed at a solid-to-liquid ratio of 1:12, extract for 60 minutes at 65°C, and filter with a leaf filter;

[0044] (3) Send the filtrate obtained in step (2) into a vacuum evaporation device to remove ethanol and the vacuum degree is -0.05MP;

[0045] (4) Heat the aqueous solution obtained in step (3) to 70°C, adjust its pH to 5, add calcium chloride, the amount of calcium chloride added is 6% of the weight of the aqueous solution obtained in step (3), keep it for 40min, Add diatomaceous earth, filter to obtain the filtrate;

[0046] (5) concentrating the filtrate obtained in step (4) in vacuum to a vacuum degree of 0.05MP to m...

Embodiment 3

[0053] Present embodiment relates to a kind of method extracting raffinose from cottonseed, comprises the following steps:

[0054] (1) Cotton kernels are obtained after cottonseed shelling, cotton kernels are softened and ginned, and cottonseed oil is extracted with solvent oil to obtain cotton meal;

[0055] (2) Add a 70% ethanol solution to the cottonseed at a solid-to-liquid ratio of 1:10, extract it at 60°C for 45 minutes, and filter it with a leaf filter;

[0056] (3) Send the filtrate obtained in step (2) into a vacuum evaporation device to remove ethanol, and the vacuum degree is -0.07MP;

[0057] (4) Heat the aqueous solution obtained in step (3) to 70°C, adjust its pH to 4, add calcium chloride, the amount of calcium chloride added is 5% of the weight of the aqueous solution obtained in step (3), and keep it for 30 minutes. Add diatomaceous earth, filter to obtain the filtrate;

[0058] (5) Concentrating the filtrate obtained in step (4) in vacuum to a vacuum degree ...

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PUM

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Abstract

The invention discloses a method for extracting raffinose from cottonseeds, and relates to the field of cottonseed processing. The method comprises the following steps: cottonseed oil extraction, ethyl alcohol leaching, ethyl alcohol removing, calcium chloride and kieselguhr adsorption, vacuum concentration, decoloring, activated carbon adsorption and crystallization separation. According to the method for extracting the raffinose from the cottonseeds, disclosed by the invention, a useful matter-the raffinose is extracted, harmful gossypol is removed, and the quality of cottonseed meal is improved.

Description

technical field [0001] The invention belongs to the technical field of cottonseed processing, and in particular relates to a method for extracting raffinose from cottonseed. Background technique [0002] Raffinose, also known as Melitriose and raffinose, is composed of galactose, glucose and fructose, and is an oligosaccharide and a non-reducing sugar. Research has found that raffinose is an excellent nutrient source for beneficial bacteria such as Bifidobacterium and Lactobacillus acidophilus in the human intestinal tract, which can promote their proliferation, thereby inhibiting the growth of spoilage bacteria in the intestinal tract and reducing the formation of toxic fermentation products . Bifidobacteria ferment raffinose to produce a large amount of short-chain fatty acids, which can stimulate intestinal peristalsis, increase stool moisture and maintain a certain osmotic pressure, thereby preventing constipation. In addition, raffinose can improve the digestive funct...

Claims

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Application Information

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IPC IPC(8): C07H1/08C07H3/06
CPCC07H1/08C07H3/06
Inventor 程飞
Owner 合肥云都棉花有限公司