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Method for preparing high-quality soybean concentrated phospholipid through combined step-by-step filtration

A soybean concentrated phospholipid, high-quality technology, applied in chemical instruments and methods, edible phospholipid composition, protein food ingredients, etc., can solve the problem of increased membrane clogging, inability to filter effectively, and filter cake layer that cannot completely and effectively filter inorganic substances Impurities and other problems can be achieved, and the effect of light color and improved product quality can be achieved

Pending Publication Date: 2021-05-28
浙江省粮食科学研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no organic solvent added in the preparation process of this method, but the filter cake layer formed by the filter aid cannot completely and effectively filter inorganic impurities, glycolipids and other substances that affect the color of phospholipids; another invention uses a multi-step coupling method to prepare high Transparent soybean phospholipid concentrate, this technology mainly uses precision filtration to repeatedly filter soybean phospholipids, but the precision filter with the same pore size filters soybean phospholipids twice and cannot effectively filter completely inorganic impurities, glycolipids and other substances that affect the color of soybean phospholipids, and Repeated filtration with the same pore size will also increase membrane clogging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolving and mixing: Feed-grade soybean concentrated phospholipids (0.8% of n-hexane insoluble matter, 60.2% of acetone insoluble matter, light Gartner color of 14+, light transmittance of 14.2%) and petroleum ether are mixed and dissolved in a ratio of 1:3.5;

[0035] Decolorization: Add 1% food-grade H to soybean concentrated phospholipid mixture 2 o 2 and 1% diatomite (attapulgite, activated carbon), stirring and mixing, heating on a magnetic stirrer at 55°C for 40min, decolorizing and stirring;

[0036] Centrifugal sedimentation: the decolorized soybean concentrated phospholipids are placed in a centrifuge at 3500r / min for 9 minutes, and a certain amount of inorganic impurities and diatomite (attapulgite, activated carbon) adsorbents are produced by centrifugal sedimentation;

[0037] Combined step-by-step filter: guide the supernatant after centrifugation into the titanium rod filter and inorganic ceramic membrane separation equipment in sequence. The pore size...

Embodiment 2

[0040]Dissolving and mixing: Feed-grade soybean concentrated phospholipids (0.8% of n-hexane insoluble matter, 60.2% of acetone insoluble matter, light Gartner color 14+, light transmittance 14.2%) and petroleum ether are mixed and dissolved in a ratio of 1:1; decolorization : Add 1.5% food-grade H to soybean concentrated phospholipid mixture 2 o 2 and 1.5% diatomite (attapulgite, activated carbon), stirring and mixing, heating on a magnetic stirrer at 60°C for 20min, decolorization and stirring; centrifugal sedimentation: the decolorized soybean concentrated phospholipids were put into a centrifuge at 2500r / min for 13min, centrifuged A certain amount of inorganic impurities and diatomaceous earth (attapulgite, activated carbon) adsorbents are settled out; combined step-by-step filters: the supernatant after centrifugation is guided into titanium rod filters and inorganic ceramic membrane separation equipment in turn, step by step Combined filter The titanium rod filter has a...

Embodiment 3

[0042] Dissolving and mixing: Feed-grade soybean concentrated phospholipids (0.8% of n-hexane insoluble matter, 60.2% of acetone insoluble matter, light Gartner color 14+, light transmittance 14.2%) and petroleum ether are mixed and dissolved in a ratio of 1:5; decolorization : Add 0.5% food-grade H to soybean concentrated phospholipid mixture 2 o 2 and 0.5% diatomaceous earth (attapulgite, activated carbon), stirring and mixing, heating on a magnetic stirrer at 50°C for 60min, decolorization and stirring; centrifugal sedimentation: the decolorized soybean concentrated phospholipids were put into a centrifuge for 5000r / min and centrifuged for 5min, centrifuged A certain amount of inorganic impurities and diatomaceous earth (attapulgite, activated carbon) adsorbents are settled out; combined step-by-step filters: the supernatant after centrifugation is guided into titanium rod filters and inorganic ceramic membrane separation equipment in turn, step by step Combined filter The...

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Abstract

The invention relates to a method for preparing soybean concentrated phospholipid by combined step-by-step filtration, which comprises the steps of dissolving and mixing feed-grade concentrated phospholipid serving as a raw material with a non-polar solvent such as n-hexane or petroleum ether, carrying out decoloring, centrifugal settling, step-by-step filtration by an inorganic membrane of a titanium rod filter, evaporating, concentrating, drying and the like, and obtaining the high-quality soybean concentrated phospholipid which is low in n-hexane insoluble substance content, high in transparency and light in color and luster. According to the method, technologies such as combined step-by-step filtration are adopted, the high-quality soybean concentrated phospholipid is finally obtained, the technical problems of high impurity content and poor transparency of soybean concentrated phospholipid in China are solved, various indexes of the obtained high-quality soybean concentrated phospholipid product reach or are higher than the national standard GB 28401-2012. and the technical process can implement industrial large-scale production.

Description

[0001] (1) Technical field [0002] The invention relates to a method for preparing high-quality soybean concentrated phospholipids through combined step-by-step filtration. [0003] (2) Background technology [0004] Concentrated soybean phospholipids are plastic or viscous products made from hydrated soybean phospholipids through vacuum dehydration, concentration, cooling and other processes. Concentrated phospholipids can not only be used as a safe natural emulsifier and nutritional supplement, but also have a wide range of uses in food, health products and pharmaceuticals. The vast majority of commercial phospholipids come from soybeans, and soybean phospholipids account for about 90% of the total consumption of phospholipids. Due to the late start of my country's soybean lecithin industry, although the production technology and product quality have made gratifying progress, compared with foreign countries, the soybean lecithin products currently produced in my country are...

Claims

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Application Information

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IPC IPC(8): C07F9/10
CPCC07F9/103
Inventor 崔晨阳刘轩孙逸文沈华
Owner 浙江省粮食科学研究所有限责任公司