Premium
Relationship between chemical composition and breakdown in cooked potato tissue
Author(s) -
Warren Donald S.,
Woodman John S.,
Gray David
Publication year - 1975
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740261110
Subject(s) - texture (cosmology) , chemical composition , food science , composition (language) , population , starch , chemistry , swelling , botany , biology , materials science , composite material , organic chemistry , linguistics , philosophy , demography , artificial intelligence , sociology , computer science , image (mathematics)
The effects of variety, harvest date and plant population on breakdown are considered in the light of two current theories relating chemical composition to the texture of cooked potato tubers. Differences between cell surface area could not account for the differences in breakdown found. The results also show the inadequacy of the theory ascribing a primary role in texture control to the “swelling pressure” generated by starch on gelatinisation. It seems likely that breakdown of cooked potato tubers is due to excessive hydration of cell wall material. On this theory high levels of polyuronides and phytate and low levels of polyvalent metals in the cell wall material favour breakdown. Correlation analysis indicates that other chemical factors which have yet to be identified may also play a role in the control of cooked potato texture.