Campus Units
Agronomy, Food Science and Human Nutrition, Center for Crops Utilization Research
Document Type
Article
Publication Version
Published Version
Publication Date
1994
Journal or Book Title
Cereal Chemistry
Volume
71
Issue
6
First Page
556
Last Page
559
Abstract
Starches isolated from kernels of two maize (Zea mays L.) inbreds and their F1 progeny, grown after four planting dates, were evaluated for differences in thermal properties. Differential scanning calorimetry (DSC) was used to compare onset (To) and peak (Tp) temperature, range (Rn), and total enthalpy ((Delta)H) values of gelatinization. Amylose content (%AM) of samples was determined colorimetrically, and image analysis was used to determine average diameters of granules. Significant (P less than or equal to 0.05) increases for Tp and (Delta)H were observed with later planting dates. Significant genotypic differences also were seen for To, Tp, and (Delta)H. Later planting dates had no effect on %AM or starch granule size. Genotypes ranked similarly for %AM across each environment, and no differences were observed for average granule diameter. The presence of environmental effects on thermal properties of the starch suggests that if small differences (1-2 C or less than 0.2-0.3 cal/g) are to be identified among nonmutant genotypes, growing conditions may need to be controlled.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Recommended Citation
Campbell, M. R.; Pollak, Linda M.; and White, Pamela J., "Effect of Planting Date on Maize Starch Thermal Properties." (1994). Food Science and Human Nutrition Publications. 138.
https://lib.dr.iastate.edu/fshn_ag_pubs/138
Included in
Food Biotechnology Commons, Food Processing Commons, Human and Clinical Nutrition Commons
Comments
This article is from Cereal Chemisty, 1994, 71(6); 556-559.