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Radio‐sensitivity of some starches treated with accelerated electron beam
Author(s) -
Nemtanu Monica R.,
Brasoveanu Mirela
Publication year - 2012
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201100111
Subject(s) - radiosensitivity , starch , potato starch , degradation (telecommunications) , chemistry , food science , viscosity , agronomy , irradiation , materials science , biology , composite material , physics , telecommunications , computer science , nuclear physics
The paper presents the investigation of the sensitivity and degradation rate of corn, wheat, rice, and potato starches exposed to accelerated electron beam taking into consideration the paste apparent viscosity and MW distribution. The functional radiosensitivity of starch defined by analyzing the apparent viscosity behavior of its aqueous paste as a function of absorbed dose had the following order: potato>wheat>corn>rice. In a similar manner, the structural radiosensitivity of starch based on the degradation rate of the MW fractions was considered. Two slight different orders were found as (1) potato>wheat>corn>rice taking into account the number molecular fraction and (2) wheat>corn>potato>rice considering the weight molecular fraction, assigned to the different structural organization of the investigated starches.