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Publication Type
Journal Article
UWI Author(s)
Author, Analytic
Wellington, Max A.; Ahmad, Mohammed, H
Author Affiliation, Ana.
Biotechnology Centre
Article Title
Glutathione and B-amylase, Peroxidase and o-Diphenolase activities during sprouting of minisett yams (Dioscorea sp.)
Medium Designator
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Connective Phrase
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Journal Title
Journal of the Science of Food and Agriculture
Translated Title
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Reprint Status
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Date of Publication
1994
Volume ID
62
Issue ID
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Page(s)
225-228
Language
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Connective Phrase
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Location/URL
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ISSN
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Notes
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Abstract
Glutathione, b-amylase, o-diphenolase (EC 1.10.3.1) and peroxidase (EC 1.11.1.7) activities were assayed in minisetts derived from the head, middle and tail sections of sprouted Dioscorea alata (cv Sweet Yam) and D cayenensis (cv Round leaf) yam tubers. In both tubers the head portions exhibited highest initial activities followed by the middle and tail, respectively. Minisetts obtained from the head, middle and tail sections of D alata sprouted uniformly whereas those obtained from D cayenensis tubers showed a much slower, sporadic sprouting pattern, with the head portions displaying dominant sprouting. The results revealed that sprouting initiation of the minisetts from both species correlated well with increased glutathione levels. High levels of peroxidase and reduced levels of o-diphenolase seemed to enhance the sprouting of the minisetts.....
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Keywords
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