In order to find out the effect of low level of starch acetylation on physicochemical properties of potato starch,amylose content, digestibility of raw and gelatinized starch, thermal properties, pasting properties, and the swelling power ofnative and acetylated potato starches were measured. The amylose content was significantly lower in acetylated starch than intheir counterpart native starches. Though a tendency in the decrease in digestibility of raw starch was observed with starchacetylation, acetylation did not alter the proportion of readily digestible starch (RDS), slowly digestible starch (SDS), andresistant starch (RS) of both raw and gelatinized potato starches. No clear increase in the swelling power was observed,however, the peak and onset gelatinization temperatures and the enthalpy required for starch gelatinization decreased withstarch acetylation. Peak and breakdown viscosities were reduced due to acetylation of potato starch while final viscosity andset back were increased.
목차
Abstract Introduction Materials and Methods Results and Discussion References
Hetti Arachchige Mangalika Wickramasinghe [ Memuro Upland Farming Research Station, National Agricultural Research Center for Hokkaido Region, Shinsei, Memuro, Hokkaido 082-0081, Japan; Department of Agricultural Biology, Faculty of Agriculture, University of Peradeniya, Peradeniya 20400, Sri Lanka ]
Kazuo Yamamoto [ Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan ]
Hiroaki Yamauchi [ Memuro Upland Farming Research Station, National Agricultural Research Center for Hokkaido Region, Shinsei, Memuro, Hokkaido 082-0081, Japan ]
Takahiro Noda [ Memuro Upland Farming Research Station, National Agricultural Research Center for Hokkaido Region, Shinsei, Memuro, Hokkaido 082-0081, Japan ]
Corresponding author