Physicochemical properties of starches and expression and activity of starch biosynthesis-related genes in sweet potatoes

Food Chemistry
Yung C LaiKuan H Lin

Abstract

The functional properties of starches from six sweet potato varieties containing various starch components and structures were studied in an attempt to identify starch sources for industrial uses. Tainan 18 (TNN18) with high-amylose (AM) starch exhibited high setback and breakdown viscosities, high water solubility at 85°C but low swelling volume at 65°C, and high hardness and adhesiveness; in contrast, the low-AM starch of Tainung 31 (TNG31) had opposite characteristics. Seven genes related to starch biosynthesis were tested, and GBSS, SS, SBEII, ISA, and AGPase were highly expressed in TNN18 and TNG31; however, transcript levels in DBE and SBE were extremely low. GBSS and SS activity reflected the abundance of GBSS and SS mRNA in TNG31 and TNN18, and expression of AGPase, GBSS, SS, and SBE in TNN18 substantially increased content of AM. The expression and activity of DBE had a significant effect on TNG31 with increased AP content.

References

Feb 13, 2003·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·T UmemotoY Nakamura
Mar 3, 2010·Annual Review of Plant Biology·Samuel C ZeemanAlison M Smith
Dec 8, 2011·Plant Biotechnology Journal·Lijia ZhuQiaoquan Liu

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Citations

May 10, 2017·Materials Science & Engineering. C, Materials for Biological Applications·Wenqiang TanZhanyong Guo
Dec 6, 2019·Journal of the Science of Food and Agriculture·Carla Ss GouveiaMiguel Âa Pinheiro de Carvalho
Aug 29, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ahui XuCunxu Wei
Apr 20, 2021·Journal of the Air & Waste Management Association·Zaber AhmedHamidi Abdul Aziz
May 11, 2021·International Journal of Biological Macromolecules·Magali LeonelCélia Maria Landi Franco

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