Article

Pre-harvest Curing: Effects on Skin Adhesion, Chemical Composition and Shelf-life of Sweetpotato Roots under Tropical Conditions

DOI: 10.1080/00128325.2017.1340141
Author(s): Aditya ParmarDepartment of Agricultural and Biosystems Engineering, Germany, Sascha M. KirchnerDepartment of Agricultural and Biosystems Engineering, Germany, Barbara SturmDepartment of Agricultural and Biosystems Engineering, Germany, Oliver HenselDepartment of Agricultural and Biosystems Engineering, Germany

Abstract

Excoriation (skinning injury) is a serious post-harvest problem for sweetpotato roots. In industrialized countries, sweetpotatoes are exposed to post-harvest curing to facilitate skin toughening and wound healing. However, in developing regions, such a practice is barely undertaken. Pre-harvest curing (PHC), where sweetpotatoes are subjected to defoliation before harvest, is a potential alternative to post-harvest curing. A field trial was conducted in southern Ethiopia. Roots underwent PHC treatment for 3, 7, 10, and 14 days, with 0 days as a control sample. Skin adhesion and chemical composition (ash, crude fibre, crude protein, dry matter, and starch) of the parenchyma and the periderm were measured. Storage testing at ambient conditions for 30 days was conducted.

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