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首页> 外文会议>2011 International Conference on New Technology of Agricultural Engineering >Preparation of Acetylated Starch by Ultra High Pressure Technology
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Preparation of Acetylated Starch by Ultra High Pressure Technology

机译：超高压技术制备乙酰化淀粉

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摘要

Acetylated starches as one of the most important modified starches are widely applied in food and nonfood fields. Corn starch was substituted with acetic anhydride at pressure range of 100 to 500 MPa for 15 min. Characteristics of native and acetylated corn starches were assessed which were involved with degree of substitution (DS), Polarized light micrographs, starch solubility, swelling power, and paste clarity. For acetylated starches by ultra high pressure processing which properties were same as acetylated starches by conventional method, DS values increased along with increasing pressure levels from 200 to 400 MPa, and DS values at 400 MPa exhibited maximum. Crystal structure of acetylated starches did not change when the pressure was less than 500Mpa.
机译：乙酰化淀粉作为最重要的改性淀粉之一，已广泛应用于食品和非食品领域。将玉米淀粉在100至500 MPa的压力范围内用乙酸酐代替15分钟。评估了天然和乙酰化玉米淀粉的特性，这些特性涉及取代度（DS），偏振光显微照片，淀粉溶解度，溶胀力和糊状透明度。对于通过超高压处理的乙酰化淀粉，其性质与常规方法中的乙酰化淀粉相同，DS值随着压力水平从200到400 MPa的增加而增加，并且在400 MPa时的DS值最大。当压力小于500Mpa时，乙酰化淀粉的晶体结构没有改变。

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