Abstract
Crystal type is an important physicochemical property of starch. However, it is currently unclear whether changes in crystal type affect other properties of starch. This study discovered that water deficit resulted in an increase in small starch granules and transparency in Pueraria lobata var. thomsonii, while causing a decrease in amylose content and swelling power. Additionally, the crystal type of P. Thomsonii starch changed from CB-type to CA-type under water deficit, without significantly altering the short-range ordered structure and chain length distribution of starch. This transformation in crystal type led to peak splitting in the DSC heat flow curve of starch, alterations in gelatinization behavior, and an increase in resistant starch content. These changes in crystalline structure and physicochemical properties of starch granules are considered as adaptive strategies employed by P. Thomsonii to cope with water deficit.
Funder
Guizhou Provincial Science and Technology Project
National Natural Science Foundation of China
Talent Introduction Research Project of Guizhou University
China National Tobacco Corporation Guangxi Zhuang Autonomous Region Company
Publisher
Public Library of Science (PLoS)
Reference59 articles.
1. Analysis on nutritional and functional components of different Pueraria lobata roots;JP Wu;Asian J Agric Res,2015
2. The enzymatic deficiency in the waxy mutant of maize;O E Nelson;Biochem Biophys Res Commun,1962
3. Understanding plant responses to water deficit from genes to the whole plant;MM Chaves;Funct Plant Biol,2003
4. Nonstructural carbon in woody plants;MC Dietze;Annu Rev Plant Biol,2014
5. Starch—composition, fine structure and architecture;RF Tester;J Cereal Sci,2004