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Processing method of lotus seed starch-lipid compound nanoparticles

A technology of lipid complex and lotus seed starch, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of many by-products, low yield, and inability to adapt to industrial continuous production. , to achieve the effect of increasing the yield, increasing the degree of compounding, and shortening the preparation cycle

Active Publication Date: 2017-06-13
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these three methods have disadvantages such as long preparation period, many by-products, and low yield, and cannot meet the needs of industrial continuous production.

Method used

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  • Processing method of lotus seed starch-lipid compound nanoparticles

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Effect test

Embodiment 1

[0028] A method for processing lotus seed starch-lipid complex nanoparticles, the specific steps are:

[0029] (1) Hydrolysis with α-amylase and isoamylase: add deionized water to 50.0g lotus seed starch to prepare a 10 wt% starch emulsion; after heating and gelatinizing in a water bath at 90°C for 15 minutes, add 500U / g based on the quality of starch High-temperature-resistant α-amylase was used for enzymatic hydrolysis for 3 h; after that, when the sample solution was cooled to 25 °C, 80 U / g of starch-based isoamylase was added for enzymatic hydrolysis for 10 h. After the enzymatic hydrolysis is completed, high-temperature enzymatic treatment is carried out, and the airtight container is ready for use;

[0030] (2) High-pressure micro-jet homogeneous compounding: 0.50 g of glyceryl monostearate was dissolved in 25 g of ethanol solution with a volume concentration of 50%, and then transferred to the lotus seed starch emulsion that had been enzymatically hydrolyzed for use, an...

Embodiment 2

[0036] A method for processing lotus seed starch-lipid complex nanoparticles, the specific steps are:

[0037] (1) Hydrolysis with α-amylase and isoamylase: Add deionized water to 50.0g lotus seed starch to prepare a 10 wt% starch emulsion; after heating and gelatinizing in a water bath at 90°C for 15 minutes, add 400U / g based on the quality of starch High-temperature resistant α-amylase was used for enzymatic hydrolysis for 3 h; after that, when the sample solution was cooled to 25°C, 100 U / g of starch-based isoamylase was added for enzymatic hydrolysis for 12 h. After the enzymatic hydrolysis is completed, high-temperature enzymatic treatment is carried out, and the airtight container is ready for use;

[0038] (2) High-pressure micro-jet homogeneous compounding: 0.60 g of glycerol monostearate was dissolved in 30 g of ethanol solution with a volume concentration of 50%, and then transferred to the lotus seed starch emulsion that had been enzymatically hydrolyzed for use, an...

Embodiment 3

[0044] A method for processing lotus seed starch-lipid complex nanoparticles, the specific steps are:

[0045] (1) Hydrolysis with α-amylase and isoamylase: add deionized water to 50.0g lotus seed starch to prepare a 10 wt% starch emulsion; after heating and gelatinizing in a water bath at 90°C for 15 minutes, add 500U / g based on the quality of starch High-temperature-resistant α-amylase was used for enzymatic hydrolysis for 3 h; after that, when the sample liquid was cooled to 25 °C, 60 U / g of starch-based isoamylase was added for enzymatic hydrolysis for 10 h. After the enzymatic hydrolysis is completed, high-temperature enzymatic treatment is carried out, and the airtight container is ready for use;

[0046] (2) High-pressure micro-jet homogeneous compounding: 0.50 g of glycerol monostearate was dissolved in 25 g of ethanol solution with a volume concentration of 50%, and then transferred to the lotus seed starch emulsion that had been enzymatically hydrolyzed for use, and ...

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Abstract

The invention relates to a processing method of lotus seed starch-lipid compound nanoparticles and belongs to the field of modified starch processing. The method comprises the following steps of: by taking the lotus seed starch and glyceryl monostearate as raw materials, hydrolyzing the raw materials through alpha-amylase and isoamylase; performing high pressure microjet homogenization compounding; performing short-time low-temperature regenerating crystallization; performing washing and centrifugalization; performing freezing and drying; and performing crushing and packaging to prepare the lotus seed starch-lipid compound nanoparticles. According to the principle provided by the invention, side chain branches of branch chain starch are cut based on a double enzyme synergetic enzymatic hydrolysis technology to form a lot of long-chain straight-chain starch; the length of the chain section of the straight-chain starch is reduced by means of high pressure microjet homogenization to accelerate short-chain fragments to be compounded with monoglyceride; the nanoparticles are generated by means of short-time low-temperature regenerating crystallization. The method provided by the invention overcomes the defects that a conventional acid hydrolysis preparation method is time-consuming, low in yield, relatively high in grain size of nanoparticles and the like. Compared with a conventional acid hydrolysis method, the yield of the nanoparticles is increased by 30-45%, and the grain sizes are distributed in a range of 60-120nm.

Description

technical field [0001] The invention belongs to the technical field of modified starch processing, and in particular relates to a processing method of lotus seed starch-lipid composite nanoparticles. [0002] technical background [0003] The starch-lipid complex is mainly a single-helical V-shaped crystal formed by self-assembly of amylose with strong hydrophilicity and lipid with strong hydrophobicity in a suitable solvent environment. Due to its special functional properties (anti-aging and slow digestion), it has become a research hotspot in the field of starch modification in recent years. The starch-lipid complex itself has a strong crystal structure and hydrophobicity, so its water solubility is poor, and it often appears in the form of solid particles, which limits its application in food processing. The starch-lipid complex is prepared into a nano-sized microcrystalline structure, which can not only increase the solubility of the complex, promote the stability of th...

Claims

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Application Information

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IPC IPC(8): C08L3/12C08K5/103C08B30/12B82Y30/00C12P19/04C12P19/14C12P19/16
Inventor 陈秉彦郑宝东曾绍校郭泽镔郭娟娟李致瑜
Owner FUJIAN AGRI & FORESTRY UNIV
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