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Double Direct Shear Test for Potato Texture
Author(s) -
McCOMBER DIANE R.,
LOHNES ROBERT A.,
OSMAN ELIZABETH M.
Publication year - 1987
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.1365-2621.1987.tb14068.x
Subject(s) - cohesion (chemistry) , shear (geology) , direct shear test , materials science , composite material , shear rate , chemistry , organic chemistry , viscosity
A double direct shear device was developed to examine shear strength parameters of mealy and waxy potatoes. Cohesion and coefficients of friction were measured at peak and ultimate shear with two machine speeds. Coefficients of friction of potato types did not differ. However, mealy potatoes displayed greater cohesion than waxy potatoes and a greater difference between peak and ultimate cohesion values. Stem ends of mealy potatoes were the most firm. Shear strength was related to strain rate.