Wu, G. and Johnson, S.K. and Bornman, J.F. and Bennett, S.J. and etl, .
(2016)
Growth temperature and
genotype both play important
roles in sorghum grain phenolic
composition.
Scientific Report, 6.
pp. 1-10.
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Abstract
Polyphenols in sorghum grains are a source of dietary antioxidants. Polyphenols in six diverse sorghum
genotypes grown under two day/night temperature regimes of optimal temperature (OT, 32/21 °C) and
high temperature (HT, 38/21 °C) were investigated. A total of 23 phenolic compounds were positively or
tentatively identified by HPLC-DAD-ESIMS. Compared with other pigmented types, the phenolic profile
of white sorghum PI563516 was simpler, since fewer polyphenols were detected. Brown sorghum IS
8525 had the highest levels of caffeic and ferulic acid, but apigenin and luteolin were not detected. Free
luteolinidin and apigeninidin levels were lower under HT than OT across all genotypes (p ≤ 0.05),
suggesting HT could have inhibited 3-deoxyanthocyanidins formation. These results provide new
information on the effects of HT on specific polyphenols in various Australian sorghum genotypes,
which might be used as a guide to grow high antioxidant sorghum grains under projected high
temperature in the future.
| Item Type: |
Article
|
| Uncontrolled Keywords: |
Sorghum grain, genotype, phenolic, composition,temperature |
| Author Affiliation: |
Food Science and Technology Program, School of Public Health, Curtin University, Perth, WA 6845, Australia |
| Subjects: |
Crop Improvement |
| Divisions: |
Sorghum |
| Depositing User: |
Mr T L Gautham
|
| Date Deposited: |
03 Jan 2019 05:38 |
| Last Modified: |
03 Jan 2019 05:38 |
| URI: |
http://eprints.icrisat.ac.in/id/eprint/15749 |
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