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Analysis of preparation and properties of sweet potato acetate starch

Huaxi Xiao

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Abstract

Sweet potato acetate starch was prepared by using the sweet potato starch as the raw material and the acetic anhydride as the acetyl agent in this paper.The optimum conditions of the preparation of acetate starch were:starch:acetic anhydride =16:1,reaction pH 8.0～8.5,reaction temperature 20～25 ℃,reaction time 1h.The acetyl content of acetate starch is 1.86%,the degree of substitution is 0.0714,and the reaction efficiency is 71.93%.The properties of viscosity,transparency and the freeze-thaw stability of sweet potato starch and acetate starch prepared in the optimum conditions were also compared.

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What this paper is about

Sweet potato acetate starch was prepared by using the sweet potato starch as the raw material and the acetic anhydride as the acetyl agent in this paper.The optimum conditions of the preparation of acetate starch were:starch:acetic anhydride =16:1,reaction pH 8.0～8.5,reaction temperature 20～25 ℃,reaction time 1h.The acetyl content of acetate starch is 1.86%,the degree of substitution is 0.0714,and the reaction efficiency is 71.93%.The properties of viscosity,transparency and the freeze-thaw stability of sweet potato starch and acetate starch prepared in the optimum conditions were also compared.

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Available abstract

Sweet potato acetate starch was prepared by using the sweet potato starch as the raw material and the acetic anhydride as the acetyl agent in this paper.The optimum conditions of the preparation of acetate starch were:starch:acetic anhydride =16:1,reaction pH 8.0～8.5,reaction temperature 20～25 ℃,reaction time 1h.The acetyl content of acetate starch is 1.86%,the degree of substitution is 0.0714,and the reaction efficiency is 71.93%.The properties of viscosity,transparency and the freeze-thaw stability of sweet potato starch and acetate starch prepared in the optimum conditions were also compared.

Key concepts: Starch, Potato starch, Acetic anhydride, Raw material, Chemistry, Food science, Vinyl acetate, Organic chemistry

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