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Pyruvoyl-based structured ester and preparation method thereof

A technology of pyruvicyl and structural lipids, which is applied in the field of structure and preparation of pyruvicyl structural lipids, can solve problems such as poor compatibility of oils and fats, and achieve the effects of easy digestion and absorption, and acceleration of fat metabolism.

Inactive Publication Date: 2014-01-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the purpose of the present invention is to chemically modify pyruvic acid to obtain pyruvic acyl structural lipids, thereby solving the problem of poor compatibility between pyruvic acid series products and oils in the past, making it possible to partially replace oils as cold salad oil, and simultaneously as cocoa butter substitutes, Nutritional enhancer is a new type of functional food of fat-soluble pyruvic acid series

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 2g of pyruvic acid, 2g of glyceryl monostearate, and 0.1g of p-toluenesulfonic acid in a 100ml eggplant-shaped bottle, react in a rotary evaporator and start timing. The vacuum of the reaction system is 15KPa, and the temperature of the water bath is 55°C. Reaction 0.5h. After the reaction, the unreacted pyruvic acid was recovered by distillation under reduced pressure to obtain a white paste product, and the products with a mass-to-charge ratio of 428 and 498 were detected by high performance liquid chromatography-mass spectrometry, which were respectively pyruvic acid and stearic acid monoglycerol Diacylglycerol and triacylglyceride synthesized from ester, the conversion rate of pyruvic acid was 18% as measured by titration analysis of total acidity.

Embodiment 2

[0016] Add 1g of pyruvic acid, 2g of glyceryl monostearate, and 0.1g of p-toluenesulfonic acid in a 100ml eggplant-shaped bottle, react in a rotary evaporator and start timing. The vacuum of the reaction system is 15KPa, and the temperature of the water bath is 55°C. Reaction 2h. After the reaction, the unreacted pyruvic acid was recovered by distillation under reduced pressure to obtain a white paste product, and the products with a mass-to-charge ratio of 428 and 498 were detected by high performance liquid chromatography-mass spectrometry, which were respectively pyruvic acid and stearic acid monoglycerol Diacylglycerol and triacylglycerol synthesized from ester, the conversion rate of pyruvic acid is 32% according to the total acidity titration analysis.

Embodiment 3

[0018] Add 2g of pyruvic acid, 2g of glyceryl monopalmitate, and 0.1g of p-toluenesulfonic acid into a 100ml eggplant-shaped bottle, react in a rotary evaporator and start timing. The vacuum of the reaction system is 15KPa, and the temperature of the water bath is 60°C. 3h. After the reaction, the unreacted pyruvic acid was recovered by distillation under reduced pressure to obtain a white paste product, and the products with a mass-to-charge ratio of 400 and 470 were detected by high-performance liquid chromatography-mass spectrometry, which were pyruvic acid and glycerol monopalmitate, respectively. Synthesized diglycerides and triglycerides were analyzed by titration of total acidity and the conversion rate of pyruvic acid was 64%.

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Abstract

The invention discloses a pyruvoyl-based structured ester and a preparation method thereof. According to the invention, through the utilization of monoglycerides or diglyceride, and by taking pyruvic acid as a raw material for reaction, a pyruvoyl-based structured ester is synthesized by esterifying. Such compounds not only have the characteristic that long / short-chain structured esters are low in calories, but also have the effects of fat reducing, exercise tolerance increasing and the like; the compounds can be used for overcoming the defects that pyruvate low-level esters are poor in oil solubility and produce peculiar smells, so that the pyruvoyl-based structured ester is a potential functional food.

Description

technical field [0001] The invention relates to the fields of organic chemistry, food science, health products and medicines, in particular to the structure and preparation method of aceruvyl structured lipid. Background technique [0002] Pyruvate is a simple α-keto acid, which is the final product of the glycolysis pathway. It realizes the mutual transformation between sugar, fat and amino acid in the body, and plays an important pivotal role in the metabolism of the three major nutrients. Its safety High resistance, and pyruvate and its esters have important functional properties in the fields of food, flavor and medicine, mainly for weight loss, enhancing exercise endurance, lowering blood fat, lowering cholesterol and anti-oxidation. The development, research, development and utilization of pyruvic acid series derivatives have become a hot spot in research at home and abroad, so the development of this series of products has significant economic benefits. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/716A23D9/02A23L1/30A23L33/10
CPCC07C67/08C07C69/716
Inventor 刘国琴巩凡
Owner SOUTH CHINA UNIV OF TECH
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