Effects of storage on the physicochemical characteristics of rice with different starch lysophospholipids contents
Yue Gu1, Xinyu Li2, Jianming Pan1
1Hainan Institute, Zhejiang University, Yazhou Bay Science and Technology City, Yazhou District, Sanya, 572025, China; Institute of Nuclear Agricultural Sciences, College of Agriculture and Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China.
Abstract:
Whether paddy rice varieties with different starch lysophospholipids (LPLs) exhibit similar changes in the physicochemical characteristics during storage remain largely unknown. This study investigated the dynamic changes in the physicochemical properties of a japonica rice and its low- and high-LPLs mutants during storage at 24 and 37 °C for one year. During storage, resistant starch (RS), peak viscosity, breakdown viscosity, pasting temperature and enthalpy of gelatinization gradually increased, with higher values observed at 37 °C compared to 24 °C after one year of storage. In contrast, the contents of storage protein components and amino acids gradually decreased, with lower values observed at 37 °C than at 24 °C after one year of storage. It seems that these changes were independent of the starch LPLs. However, principal component analysis based on these physicochemical properties successfully distinguished the three genotypes with different LPLs, indicating that LPLs influence the physicochemical properties during storage.
More Related Videos
Related Concept Videos
Lysosomal Hydrolases
Production of Organic Acids


