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Determining the Radial Distribution of Specific Gravity Within Potato Tubers
Author(s) -
QUARMBY A. R.
Publication year - 1981
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1981.tb04898.x
Subject(s) - specific gravity , cultivar , center of gravity , distribution (mathematics) , mathematics , biological system , botany , agricultural engineering , biology , chemistry , mineralogy , mathematical analysis , engineering , management , economics
A computer program is available which allows the experimentor to examine the radial distribution of specific gravity within individual potato tubers by processing data obtained by peeling tubers concentrically and weighing in air and water between consecutive peelings. The program enables one to calculate optimum estimates of eight parameters of a mathematical model which describes the mean change in specific gravity from the geometric center of a tuber to its periderm. Significant differences in intratuber specific gravity distributions between cultivars and between treatments within the same cultivar have been found. Mathematical modelling may be a method of describing the distribution of other tuber constituents of interest.