Preparation method of resistant starch nutritional carrier based on metal-organic framework as well as product thereof

A metal-organic framework and resistant starch technology, which is applied in the field of preparation of food-grade nutritional carriers, can solve the problems that have not yet been reported on food-grade nutritional carriers, and achieve good solution self-aggregation performance and good health effects

Inactive Publication Date: 2014-02-05
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no research report on the construction of food-grade nutritional carriers based on octenyl succinic acid resistant starch ester and metal-organic framework materials

Method used

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  • Preparation method of resistant starch nutritional carrier based on metal-organic framework as well as product thereof
  • Preparation method of resistant starch nutritional carrier based on metal-organic framework as well as product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1, Preparation of resistant starch nutritional carrier based on metal organic framework

[0021] The preparation method of the resistant starch nutrient carrier based on the metal organic framework comprises the following steps:

[0022] A. Preparation of octenyl succinic acid resistant starch ester: Stir 300g of resistant starch and 200mL of absolute ethanol in a high-speed mixer at 2000rpm to fully swell the resistant starch, then add 2g dropwise under stirring / mL 150mL of absolute ethanol solution of octenyl succinic anhydride, adjust the pH to 9.5 with 0.5mol / L sodium hydroxide solution, heat the reaction in a water bath at 100°C for 3h; after the reaction, adjust the pH to neutral with 0.5mol / L hydrochloric acid solution properties, filtered, the filter cake was washed with absolute ethanol, dried below 50°C, and pulverized to obtain octenyl succinic acid resistant starch ester;

[0023] B. Preparation of metal-organic framework materials: Dissolve 21.3g ...

Embodiment 2

[0026] Example 2, Preparation of resistant starch nutritional carrier based on metal organic framework

[0027] The preparation method of the resistant starch nutrient carrier based on the metal organic framework comprises the following steps:

[0028] A. Preparation of octenyl succinic acid resistant starch ester: Stir 500g of resistant starch and 300mL of absolute ethanol in a high-speed mixer at 3000rpm to fully swell the resistant starch, then add 0.96 125 mL of anhydrous ethanol solution of g / mL octenyl succinic anhydride, adjust the pH to 10.0 with 0.5 mol / L sodium hydroxide solution, and heat the reaction in a water bath at 95°C for 5 hours; after the reaction, adjust the pH to 0.5 mol / L hydrochloric acid solution Neutral, filter, wash the filter cake with absolute ethanol, dry below 50°C, and pulverize to obtain octenyl succinic acid resistant starch ester;

[0029] B. Preparation of metal-organic framework materials: Dissolve 30 g of γ-cyclodextrin and 3.7 g of potas...

Embodiment 3

[0032] Example 3, Preparation of resistant starch nutritional carrier based on metal organic framework

[0033] The preparation method of the resistant starch nutrient carrier based on the metal organic framework comprises the following steps:

[0034] A. Preparation of octenyl succinic acid resistant starch ester: Stir 200g of resistant starch and 100mL of absolute ethanol in a high-speed mixer at 1500rpm to fully swell the resistant starch, then add 0.5 160 mL of anhydrous ethanol solution of g / mL octenyl succinic anhydride, adjust the pH to 10.5 with 0.5 mol / L sodium hydroxide solution, and heat the reaction in a water bath at 90°C for 8 hours; after the reaction, adjust the pH to 0.5 mol / L hydrochloric acid solution Neutral, filter, wash the filter cake with absolute ethanol, dry below 50°C, and pulverize to obtain octenyl succinic acid resistant starch ester;

[0035] B. Preparation of metal-organic framework materials: Dissolve 10 g of γ-cyclodextrin and 1.24 g of potas...

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Abstract

The invention discloses a preparation method of a resistant starch nutritional carrier based on a metal-organic framework as well as a product thereof. The preparation method of the resistant starch nutritional carrier comprises the step of adsorbing metal-organic framework structured gamma-cyclodextrin on the surface of octenyl succinic anhydride modified starch (OSA-S) by taking the OSA-S prepared by performing esterification on octenyl succinic anhydride and resistant starch as a base material and under the effects of hydrogen bond, electrostatic force and the like, thus constructing the nutritional carrier with a porous network structure. The nutritional carrier has favorable solution self-aggregation performance; by virtue of the great load quantity of the relatively single OSA-S and the metal-organic framework structured gamma-cyclodextrin, functional substances such as nutritional elements can be embedded in a solid state mode, so that the damage caused by light irradiation, oxygen as well as acid-base and the like is prevented effectively, and a certain slow-release effect is achieved; the resistant starch also has a good health protection effect, and thus the nutritional carrier is expected to be a safe functional food additive applied to the food processing field.

Description

technical field [0001] The invention belongs to the technical field of chemistry and food processing, and relates to a preparation method of a food-grade nutritional carrier and a product prepared by the method. Background technique [0002] Resistant starch (RS), also known as enzyme-resistant starch and indigestible starch, cannot be digested and absorbed by the small intestine, but is fermented by microorganisms in the colon to produce short-chain fatty acids. These short-chain fatty acids can be absorbed into the blood through the colon wall to provide energy, and can also reduce intestinal pH and promote the absorption of micronutrients such as minerals. Due to slow digestion and absorption, resistant starch can delay the rise in blood sugar after meals, and it is not easy to be hungry after eating, which helps control blood sugar balance, and is especially suitable for diabetics. In addition, resistant starch also has health effects such as improving constipation, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23P1/00A23L1/09A23L29/30A23L33/125A23P10/00A23P10/30
Inventor 钟金锋覃小丽徐立郑炯
Owner SOUTHWEST UNIVERSITY
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