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Noodle Quality as Related to Sorghum Starch Properties
Author(s) -
Beta Trust,
Corke Harold
Publication year - 2001
Publication title -
cereal chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.558
H-Index - 100
eISSN - 1943-3638
pISSN - 0009-0352
DOI - 10.1094/cchem.2001.78.4.417
Subject(s) - amylose , starch , food science , sorghum , chemistry , starch gelatinization , viscosity , agronomy , materials science , composite material , biology
Starch was extracted from 10 sorghum genotypes and physicochemical properties (amylose content and pasting, textural, and thermal properties) were evaluated. The amylose content was 24–30%. DC‐75 starch had the highest peak viscosity (380 Rapid Visco Analyser units). Gelatinization peak temperature occurred over a narrow range (67–69°C). Genotypes Kasvikisire and SV2 produced white starches. Starches from other genotypes were different shades of pink. The starch noodles prepared were, accordingly, either white or pink. Cooking enhanced the pink coloration of noodles. Cooking loss, noodle rehydration, and elasticity were evaluated. Cooking loss was low (mean 2.4%). Noodle elasticity was highly correlated with starch pasting properties of hot paste viscosity (HPV) ( r = 0.81, P < 0.01) and cold paste viscosity (CPV) ( r = 0.75, P < 0.01). Noodle rehydration was significantly correlated to the initial swelling temperature of starch ( T i ) ( r = ‐0.91, P < 0.001) and gelatinization peak temperature ( T p ) ( r = 0.69, P < 0.05). The findings suggest a potential area of food application for sorghum genotypes of different grain colors. Evaluation of starch properties could be a good starting point for selecting sorghum genotypes with superior noodle‐making properties.