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Cultivation pattern affects starch structure and physicochemical properties of yam (Dioscorea persimilis)

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Xiao, Y., Wang, S., Ali, A., Shan, N., Luo, S., Sun, J., Zhang, H., Xie, G., Shen, S., Huang, Y. and Zhou, Q. (2023) Cultivation pattern affects starch structure and physicochemical properties of yam (Dioscorea persimilis). International Journal of Biological Macromolecules, 242 . p. 125004. ISSN 0141-8130

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Article Link: https://doi.org/10.1016/j.ijbiomac.2023.125004

Publisher URL: https://www.sciencedirect.com/science/article/pii/S0141813023018986


Yam (Dioscorea spp.) is a major food source in many countries due to its tuber rich in starch (60 %–89 % of the dry weight) and various important micronutrients. Orientation Supergene Cultivation (OSC) pattern is a simple and efficient cultivation mode developed in China in recent years. However, little is known about its effect on yam tuber starch. In this study, the starchy tuber yield, starch structure and physicochemical properties were compared and analyzed in detail between OSC and Traditional Vertical Cultivation (TVC) with Dioscorea persimilis “zhugaoshu”, a widely cultivated variety. The results proved that OSC significantly increased tuber yield (23.76 %–31.86 %) and commodity quality (more smooth skin) compared with TVC in three consecutive years of field experiments. Moreover, OSC increased amylopectin content, resistant starch content, granule average diameter and average degree of crystallinity by 2.7 %, 5.8 %, 14.7 % and 9.5 %, respectively, while OSC decreased starch molecular weight (Mw). These traits resulted in starch with lower thermal properties (To, Tp, Tc, ΔHgel), but higher pasting properties (PV, TV). Our results indicated that cultivation pattern affected the yam production and starch physicochemical properties. It would not only provide a practical basis for OSC promotion, but also provide valuable information on how to guide the yam starch end use in food and non-food industries.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Horticulture and Forestry Science
Keywords:Orientation Supergene Cultivation (OSC) Starch structure Thermal properties Pasting properties
Subjects:Science > Biology > Biochemistry
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Vegetables
Live Archive:22 Jun 2023 06:28
Last Modified:22 Jun 2023 06:28

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