Study on the morphology and composition of potato starch in Tibet

doi:10.14088/j.cnki.issn0439-8114.2024.07.025

Abstract

Abstract: The particle size distribution, microscopic particle morphology and amylose and amylopectin contents of potato starch from different producing areas in Tibet were determined by particle size distribution instrument, scanning electron microscope and ultraviolet dual wavelength method, and compared with the commercial potato starch and those of potato starch from different producing areas in China's mainland. The results showed that the particle size and micromorphology of potato starch in Tibet were not significantly different from those in the market and the mainland. The average amylose content of Tibetan potato starch was 36.73% and the average amylopectin content was 45.87%. The average amylose content of commercial potato starch was 30.76% and the average amylopectin content was 49.94%. The average amylose content of potato starch in China's mainland was 31.73%, and the average amylopectin content was 46.80%. Compared with the potato starch in the market and China's mainland, the amylose content of potato starch in Tibet was significantly increased （P<0.001）, and the content of amylopectin was significantly decreased （P<0.05）. The composition of potato starch in Tibet was significantly different from that in the market and China's mainland, which provided an experimental basis for the high-value development of potato starch in Tibet.

Key words: potato, starch, morphology, composition, Tibet

CLC Number:

TS235.2

GUO Xiao-qing, XIE He-bing, YANG Lin, NIMA Ci-ren, BAIMA Dan-zeng. Study on the morphology and composition of potato starch in Tibet[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(7): 154-157.

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