Articles
STUDIES ON THE POSSSIBLE INVOLVEMENT OF POLYAMINES IN THE SHELF LIFE OF GRAPES (VITIS VINIFERA L.)
Article number
785_60
Pages
457 – 464
Language
English
Abstract
Three experiments were conducted to elucidate the involvement of polyamines in the shelf life of grapes.
Thompson Seedless had significantly longer shelf life followed by Kishmish Rozavis and Anab-e-Shahi.
Putrescine was the major polyamine in grapes followed by spermidine and spermine.
There was a general decline in the intensity of polyamine, and particularly spermine declined to undetectable levels during the storage in the varieties or treatments with shorter shelf life.
Storage of Anab-e-Shahi grapes at 4°C extended the presence of spermine and resulted in increased shelf life.
Undetectable levels of spermine spell the end of shelf life in grapes.
Regarding various physico-chemical parameters, Thompson Seedless and Sonaka recorded significantly lowest PLW, berry shatter and highest TSS and acidity.
Thompson Seedless had significantly longer shelf life followed by Kishmish Rozavis and Anab-e-Shahi.
Putrescine was the major polyamine in grapes followed by spermidine and spermine.
There was a general decline in the intensity of polyamine, and particularly spermine declined to undetectable levels during the storage in the varieties or treatments with shorter shelf life.
Storage of Anab-e-Shahi grapes at 4°C extended the presence of spermine and resulted in increased shelf life.
Undetectable levels of spermine spell the end of shelf life in grapes.
Regarding various physico-chemical parameters, Thompson Seedless and Sonaka recorded significantly lowest PLW, berry shatter and highest TSS and acidity.
Authors
Y. Narayana Reddy, V. Bhavani Shankar, V. Padmalatha
Keywords
grapes, polyamines, berry shatter, physiological loss in weight, total soluble solids, titrable acidity, packaging material
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