Authors
Chuangchuang Zhang, Zekun Xu, Yuting Xu, Mengting Ma, Song Xu, Bilatu Agza Gebre, Harold Corke, Zhongquan Sui
Publication date
2024/5/20
Journal
Journal of Agricultural and Food Chemistry
Publisher
American Chemical Society
Description
Granule-associated surface lipids (GASLs) and internal lipids showed different lipid–amylose relationships, contents, and distributions, suggesting their differing biological origins and functions, among waxy, normal, and high-amylose rice starch. The GASL content mainly depended on the pore size, while internal lipids regulated starch biosynthesis, as indicated by correlations of internal lipids with the chain length distribution of amylopectin and amylose content. Of the 1346 lipids detected, 628, 562, and 408 differentially expressed lipids were observed between normal–waxy, high-amylose–waxy, and normal–high-amylose starch, respectively. After the removal of GASLs, the higher lysophospholipid content induced greater decreases in the peak and breakdown viscosity and swelling power, while the highest digestibility increase was found with the highest triacylglycerol content. Thus, different GASL compositions …