Differential analysis of starch contents and its physicochemical properties in potato tubers of different processing types
Potato starch is an important industrial raw material with stable demand in the raw material market due to its excellent physicochemical properties. In order to investigate the differences in starch physicochemical properties of different potato varieties,six potato varieties were used as research objects,and a comprehensive evaluation was carried out by comparing the starch contents and physicochemical properties and combining them with their dynamic changes during the growth period and storage period. The results showed that starch physicochemical properties of different potato varieties differed significantly among genotypes. During growth period,starch content showed an overall increasing trend;straight-chain starch content showed a stepwise decreasing trend of change;transparency showed a gradual decreasing trend;freeze-thaw stability was optimal at 70 d after seedling. During storage period,starch content and starch precipitation rate were mainly affected by storage temperature,straight-chain starch content and starch transparency were jointly regulated by storage temperature and storage time;starch particle size distribution varied according to varieties. Evaluation models such as principal component analysis yielded that the better overall performance during the growth period was given by Yanshu 5 and Dongnong 317,and the better overall performance during the storage period was given by Dongnong 317 and Kexin 27.
potatostarchprocessing type varietyphysical and chemical propertydynamic change
万方数据
维普
