Viscoelastic properties and changes in pasting characteristics of trifoliate yam (Dioscorea dumetorum) starch after harvest

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Title

Viscoelastic properties and changes in pasting characteristics of trifoliate yam (Dioscorea dumetorum) starch after harvest

Creator

Emmanuel Ohene Afoakwa, Samuel Sefa-Dedeh

Description

Studies were conducted on the viscoelastic properties, as well as the changes in pasting characteristics, of trifoliate yam, Dioscorea dumetorum, starch during post-harvest hardening of the tubers. A 3×4 factorial experiment with blanching treatment time (0, 15 and 30 s) and storage time (0, 12, 24 and 36 h) as the respective variables was performed. The samples were evaluated for pasting temperature, viscosity at 95 °C, viscosity at 95 °C-Hold, viscosity at 50 °C and viscosity at 50 °C-Hold, as well as their changes during storage of the tubers, to determine the starch behaviour of the D. dumetorum tubers during the hardening phenomenon and how blanching affects the process during storage. No significant differences (P⩽0.05) in the viscoelastic properties were observed between the means obtained for pasting temperature, viscosity at 95 °C, viscosity at 95 °C-Hold, viscosity at 50 °C and viscosity at 50 °C-Hold in …

Publisher

Elsevier

Date

2002

Source

https://scholar.google.com/citations?view_op=view_citation&hl=en&user=EZuX1N8AAAAJ&pagesize=80&citation_for_view=EZuX1N8AAAAJ:hqOjcs7Dif8C

Language

English