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Method for preparing esterified porous starch by virtue of solvent method

A technology of porous starch and solvent method is applied in the preparation of esterified porous starch and the field of esterified porous starch prepared by solvent method, which can solve the problems of low yield of porous starch and inconvenient operation, and achieves low production cost and ideal esterification. Acidity and acidity, the effect of a simple process

Inactive Publication Date: 2017-06-13
南京福科帝生物科技有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the yield of esterifying porous starch with fatty acid or alkenyl succinic anhydride is low and the operation is inconvenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Take 65g of deproteinized corn porous starch and cornstarch, add 120mL of dry triethylamine, stir at room temperature for 0.5h; add 100mL of anhydrous carbon tetrachloride, and drop in 20.7g of stearyl chloride (dissolved in 100mL of Water carbon tetrachloride), control dripping in 20~30min, stir 2.25h; Add 95% ethanol 100mL in above-mentioned reactant, stir 1.25h, centrifugal, described centrifugal speed is 3000rpm, centrifugal time is 15min, obtains Precipitate; wash with 95% ethanol repeatedly for 4 times, add 250 mL of 95% ethanol each time, and then centrifuge at a speed of 3000 rpm for 15 minutes; dry the above centrifuged precipitate at 105°C for 2 hours to obtain esterified porous starch .

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Abstract

The invention discloses a method for preparing esterified porous starch by virtue of a solvent method. The method disclosed by the invention comprises the following steps: mixing porous starch with triethylamine at normal temperature, adding anhydrous carbon tetrachloride and stearyl chloride, mixing and reacting, then separating out precipitates, washing and drying, so that the esterified porous starch is obtained. The method disclosed by the invention has the advantages that technological process is simple, production cost is low, yield of the prepared esterified porous starch is more than 93.08%, continuous large-scale production can be realized, and esterification degree of the obtained esterified porous starch can reach 1.7*10<6> peak area per gram and acidity can reach 10.47 DEG T.

Description

technical field [0001] The invention relates to a method for preparing esterified porous starch, in particular to a method for preparing esterified porous starch by a solvent method, which belongs to the technical field of food additives. Background technique [0002] Porous starch is a new type of modified starch. Japanese researchers called this type of starch "porous starch", while American scholars called it "porous starch" or "microporous starch". Nobuhiro Hasegawa of Japan gave a relatively clear definition of porous starch, that is, the hydrolyzate obtained by degrading various starches by enzymes with hydrolytic activity to raw starch at a temperature lower than the gelatinization temperature of starch is called porous starch. The micropore diameter of porous starch is about 0.5-1.5 μm, and the micropores cover the entire surface of the starch granules, and go deep from the surface to the center, and the volume of the pores accounts for about 50% of the particle volu...

Claims

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Application Information

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IPC IPC(8): C08B31/04A23L29/30
CPCC08B31/04A23V2002/00A23V2250/5118
Inventor 姚卫蓉
Owner 南京福科帝生物科技有限公司
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