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Phenolic acid starch ester as well as preparation method and application thereof

A technology of starch ester and phenolic acid, which is applied in the field of food chemistry, can solve the problems that the impact on human health has not been clarified, achieve good biological activity, improve enzyme activity, and promote the effect of starch dispersion

Active Publication Date: 2021-06-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, only ferulic acid and caffeic acid starch esters have been reported to be synthesized, and the efficacy research has focused on antioxidant properties, but the impact of phenolic acid starch esters on human health after being digested by the gastrointestinal tract has not been clarified

Method used

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  • Phenolic acid starch ester as well as preparation method and application thereof
  • Phenolic acid starch ester as well as preparation method and application thereof
  • Phenolic acid starch ester as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 10 g of starch into 200 mL of water and heat at 70° C. for 30 minutes for pregelatinization treatment, and then freeze-dry to obtain pregelatinized starch. Mix 5mmol ferulic acid, caffeic acid, p-coumaric acid, o-coumaric acid, sinapic acid, chlorogenic acid and 5mmol pregelatinized starch in isooctane, add or not add 10% (to pregelatinize Starch mass) lipase, 1% (pregelatinized starch mass) solid acid catalyst, and 10% (pregelatinized starch mass) water-absorbing agent, use or not use ultrasonic treatment, ultrasonic treatment conditions are: One kilogram of pregelatinized starch corresponds to an ultrasonic power of 50 watts; react at 60°C to observe the degree of substitution of the product. After reacting for 24 hours, filter through a 60-mesh sieve to remove the water-absorbing agent and solid acid catalyst, collect the filtrate, centrifuge at 2000r / min for 10min, wash the precipitate with 95% ethanol solution and then centrifuge again, repeat 2-3 times, and co...

Embodiment 2

[0052] Add 10 g of starch into 200 mL of water and heat at 70° C. for 30 minutes for pregelatinization treatment, and then freeze-dry to obtain pregelatinized starch. With 5mmol p-coumaric acid, sinapinic acid, or chlorogenic acid and 5mmol pregelatinized starch, 10% (by pregelatinized starch mass) lipase, 1% (by pregelatinized starch mass) solid acid catalyst, And 10% (based on the mass of pregelatinized starch) water-absorbing agent is mixed in isooctane, and placed at 20, 30, 40, 50, 60, 70, 80, 90 ° C for reaction, while ultrasonic treatment, reaction 3, 6 , 9, 12, 18, 24, 36, 48, 60 hours, keep stirring, and get the phenolic acid starch ester suspension through a 60-mesh sieve, remove the water-absorbing agent and solid acid catalyst, collect the filtrate, and centrifuge at 2000r / min After 10 minutes, the precipitate was washed with 95% ethanol solution and centrifuged again, and repeated 2 to 3 times. The combined supernatant could be recovered by removing the solvent, a...

Embodiment 3

[0063] Add 10 g of cassava, sweet potato, potato, corn and wheat starch to 200 mL of water and heat at 70°C for 30 minutes for pre-gelatinization treatment, and then freeze-dry to obtain pre-gelatinized starch. 5mmol of ferulic acid, caffeic acid, p-coumaric acid, o-coumaric acid, sinapic acid or chlorogenic acid and 5mmol of pregelatinized starch, 10% (by pregelatinized starch mass) lipase, 1% (by Pre-gelatinized starch mass) solid acid catalyst, and 20% (pre-gelatinized starch mass) water-absorbing agent mixed in isooctane, and placed at 70 ° C for reaction, while ultrasonic treatment, reaction for 24 hours, stirring constantly, The phenolic acid starch ester suspension was coarsely filtered through a 60-mesh sieve to remove the water-absorbing agent and solid acid catalyst, collect the filtrate, centrifuge at 2000r / min for 10min, add 95% ethanol solution to the precipitate and wash it, and then centrifuge again, repeating 2 to 3 times. The combined supernatant can be recove...

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Abstract

The invention discloses a phenolic acid starch ester as well as a preparation method and application thereof, and belongs to the technical field of food chemistry. The preparation method comprises the following steps: (1) adding starch into water, heating, carrying out pre-gelatinization treatment, and dehydrating and drying to obtain pre-gelatinized starch; (2) mixing phenolic acid, pre-gelatinized starch, lipase, a solid acid catalyst and a water absorbent in an organic solvent, and reacting at 40-80 DEG C in combination with ultrasonic treatment to obtain a phenolic acid starch ester turbid liquid; and (3) carrying out solid-liquid separation on the phenolic acid starch ester turbid liquid to obtain the phenolic acid starch ester. According to the invention, ultrasonic treatment is utilized in the lipase catalytic reaction process to promote dispersion of starch and improve the enzyme activity, and the solid acid catalyst and the water absorbent are combined to synergistically promote the increase of the reaction efficiency. The preparation method is efficient and safe, and starch sources are not limited; the prepared phenolic acid starch ester has good biological activity, and has a good effect on preventing and treating metabolic diseases, especially diabetes and obesity.

Description

technical field [0001] The invention relates to the technical field of food chemistry, in particular to a phenolic acid starch ester and a preparation method and application thereof. Background technique [0002] With the development of economy and society, people's living standards are gradually improving, and the incidence of metabolic diseases such as diabetes and obesity is increasing rapidly. Excessive intake of carbohydrates and fats is the main reason. Starch is the most important carbohydrate in the diet, and its digestion and absorption can increase blood sugar levels to supply the energy needed for life activities. Excessive starch intake will lead to high postprandial blood sugar levels in the short term, and will cause fat accumulation in the long term, eventually developing into diabetes and obesity. Therefore, controlling the occurrence and development of metabolic diseases such as obesity and diabetes by regulating the digestion and absorption of starch has b...

Claims

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Application Information

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IPC IPC(8): C12P19/04C08B31/04A23L33/21A23L29/30A61P3/10
CPCC12P19/04C08B31/04A23L33/21A23L29/35A61P3/10A23V2002/00A23V2200/328A23V2200/332
Inventor 陆柏益徐涛钟永恒季圣阳
Owner ZHEJIANG UNIV
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