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Efficient and stable preparation method of soybean lecithin

A soybean lecithin, stable state technology is applied in the field of high-efficiency and stable soybean lecithin, which can solve the problems of easy moisture absorption, easy oxidation of soybean lecithin, application limitation, etc., and achieves reduced degradability, good product quality, and increased inclusion amount. and the effect of inclusion rate

Active Publication Date: 2018-01-16
广州海莎生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, natural soybean lecithin contains a large amount of unsaturated fatty acids and phosphatidyl groups in its molecule, which is easily affected by temperature, moisture, etc., so that soybean lecithin has the disadvantages of being extremely easy to oxidize and absorb moisture, making it widely used in industry. Applications are very limited

Method used

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  • Efficient and stable preparation method of soybean lecithin
  • Efficient and stable preparation method of soybean lecithin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Tapioca starch is made into starch milk with a mass percentage concentration of 10% with a phosphate buffer solution, and the pH is adjusted to 4.5, and placed in an airtight container at 99 ° C for 60 minutes to gelatinize; after the gelatinization is completed, the paste Cool the solution to 60°C, add 30U of pullulanase (OPTIMAX L‐1000, Genencor Bioengineering Co., Ltd.) per gram of dry starch, enzymatically hydrolyze for 24 hours, and inactivate the enzyme to obtain the cassava amylose solution;

[0028] (2) Heat the amylose solution obtained in step (1) to 50°C and stir at a constant speed, adjust the membrane filtration system (30K, 50K two kinds of ultrafiltration membranes) to obtain an amylose solution with a molecular weight of 30K~50K, and then centrifuge , washed, dried, and pulverized to obtain white powdery amylose, and the membrane filtration system adopts a filtration pressure of 3 Bar;

[0029] (3) Take the amylose (50g, dry basis) gained in step (2)...

Embodiment 2

[0039] (1) Potato starch is made into starch milk with a mass percent concentration of 8% with a phosphate buffer solution, and the pH is adjusted to 5.5, and placed in an airtight container at 98° C. for 50 minutes for gelatinization; after the gelatinization is completed, the paste Cool the solution to 60°C, add 20U of pullulanase (OPTIMAX L‐1000, Genencor Bioengineering Co., Ltd.) per gram of dry starch, and after 36 hours of enzymolysis, inactivate the enzyme to obtain the potato amylose solution;

[0040] (2) Heat the amylose solution obtained in step (1) to 50°C and stir at a constant speed, adjust the membrane filtration system (50K, 100K two ultrafiltration membranes) to obtain an amylose solution with a molecular weight of 50K~100K, and then centrifuge , washed, dried, and pulverized to obtain white powdery amylose, and the membrane filtration system adopts a filtration pressure of 4 Bar;

[0041] (3) Take the amylose (50g, dry basis) gained in step (2) to prepare 10%...

Embodiment 3

[0044] (1) Cornstarch is made into starch milk with a mass percentage concentration of 11% with a phosphate buffer solution, and the pH is adjusted to 6.5, and placed in a closed container at 97°C for 40 minutes to gelatinize; after the gelatinization is completed, the paste Cool the solution to 40°C, add 10U of isoamylase (Pseudomonas sp, Sigma‐Aldrich) per gram of dry starch, and after 12 hours of enzymolysis, inactivate the enzyme to obtain corn amylose solution;

[0045] (2) Heat the amylose solution obtained in step (1) to 50°C and stir at a constant speed, adjust the membrane filtration system (5K, 10K two kinds of ultrafiltration membranes) to obtain an amylose solution with a molecular weight of 5K~10K, and then centrifuge , washed, dried, and pulverized to obtain white powdery amylose, and the membrane filtration system adopts a filtration pressure of 2 Bar;

[0046] (3) Take the amylose (50g, dry basis) gained in step (2) to prepare 10% amylose solution, adjust the t...

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Abstract

The invention discloses a high-efficient and stable-state preparation method of soybean lecithin. The method takes natural starch as a raw material, and comprises the following steps: debranching through enzymatic hydrolysis to obtain an amylose solution; filtering the amylose solution through membranes (including five ultrafiltration membranes of which the molecular weights are 5 K to 100 K) to obtain amyloses of different molecular weights, then adjusting the temperature of the amylose solution to be 50 to 80 DEG C, dropping a soybean lecithin phosphate buffer saline (PBs) solution of which the soluble mass percentage is 5% to 20%, stirring for 1 to 4 hours at constant temperature, adding 1 to 6 grams of the soybean lecithin PBs solution into per gram of dry starch; cooling to room temperature, and placing in a refrigerator of 2 to 6 DEG C to carry out refrigeration for 12 to 24 hours; carrying out centrifugation, washing, drying and grinding to obtain a light yellow powder product. The product is higher in content of the soybean lecithin and better in stability, so that the storage stability of the soybean lecithin is improved, the possibilities of moisture absorption and oxidization are low, and the use characteristics and the application range of the soybean lecithin are improved.

Description

technical field [0001] The invention relates to a production method of modified starch, in particular to a method for preparing amylose inclusion bodies by combining biotechnology and membrane filtration technology and stabilizing soybean lecithin efficiently. Background technique [0002] Soy lecithin (also known as soybean lecithin) is a by-product in the process of refining soybean oil, and it is a lipid compound with important physiological functions. Lecithin is an important component of human cell membranes. The human body supplements a certain amount of lecithin to help the self-repair of human cell membranes, improve the functional characteristics of cell membranes, and enhance the body's metabolism, self-healing ability and self-renewal ability of body tissues to a certain extent. Thereby, the aging of human vitality can be delayed. The increase of lecithin content in the human body can effectively reduce triglyceride and cholesterol in the blood, thereby effective...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B33/00C12P19/16C12P19/14C12P19/04
CPCC08B33/00C12P19/04C12P19/14C12P19/16
Inventor 罗志刚席永康
Owner 广州海莎生物科技有限公司
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