Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity
This paper reports how genotype and growth temperature affect the physical characteristics and polyphenol content in sorghum grains. Two day/night temperature regimes, 32/21 and 38/21°C, were used to grow six sorghum genotypes (CCH1, CCH2, AQL33/QL36, Ai4, PI563516, and IS 8525). The physical charac...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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A A C C International
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/27916 |
| _version_ | 1848752396330598400 |
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| author | Wu, Gangcheng Johnson, Stuart Bornman, Janet Bennett, Sarita Singh, V. Fang, Z. |
| author_facet | Wu, Gangcheng Johnson, Stuart Bornman, Janet Bennett, Sarita Singh, V. Fang, Z. |
| author_sort | Wu, Gangcheng |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper reports how genotype and growth temperature affect the physical characteristics and polyphenol content in sorghum grains. Two day/night temperature regimes, 32/21 and 38/21°C, were used to grow six sorghum genotypes (CCH1, CCH2, AQL33/QL36, Ai4, PI563516, and IS 8525). The physical characteristics (hardness, weight, and diameter) of sorghum grain and their free, bound, and total polyphenol contents were determined. Grain antioxidant activity was evaluated by 2,2'-azinobis(3- ethylbenzothiazoline-6-sulfonic acid) diammonium salt and 2-2-diphenyl- 1-picrylhydrazyl assays. The results indicate that the weight and diameter of the sorghum kernels were significantly increased in all genotypes except for CCH1, under higher temperature, whereas kernel hardness decreased. Genotype had a significant influence polyphenol content (IS 8525 about four times higher than PI563516 under optimum temperature) and antioxidant activity, but temperature did not, with the exception of IS 8525 in which polyphenol content (reduced by about 10%) and antioxidant activity were lower at the high temperature. Polyphenol content was strongly positively correlated with antioxidant activity. This research provides valuable information on the properties of different sorghum genotypes under expected future increased temperatures that may be of value for varietal selection for specific end use. |
| first_indexed | 2025-11-14T08:07:57Z |
| format | Journal Article |
| id | curtin-20.500.11937-27916 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:07:57Z |
| publishDate | 2016 |
| publisher | A A C C International |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-279162018-06-07T08:21:11Z Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity Wu, Gangcheng Johnson, Stuart Bornman, Janet Bennett, Sarita Singh, V. Fang, Z. This paper reports how genotype and growth temperature affect the physical characteristics and polyphenol content in sorghum grains. Two day/night temperature regimes, 32/21 and 38/21°C, were used to grow six sorghum genotypes (CCH1, CCH2, AQL33/QL36, Ai4, PI563516, and IS 8525). The physical characteristics (hardness, weight, and diameter) of sorghum grain and their free, bound, and total polyphenol contents were determined. Grain antioxidant activity was evaluated by 2,2'-azinobis(3- ethylbenzothiazoline-6-sulfonic acid) diammonium salt and 2-2-diphenyl- 1-picrylhydrazyl assays. The results indicate that the weight and diameter of the sorghum kernels were significantly increased in all genotypes except for CCH1, under higher temperature, whereas kernel hardness decreased. Genotype had a significant influence polyphenol content (IS 8525 about four times higher than PI563516 under optimum temperature) and antioxidant activity, but temperature did not, with the exception of IS 8525 in which polyphenol content (reduced by about 10%) and antioxidant activity were lower at the high temperature. Polyphenol content was strongly positively correlated with antioxidant activity. This research provides valuable information on the properties of different sorghum genotypes under expected future increased temperatures that may be of value for varietal selection for specific end use. 2016 Journal Article http://hdl.handle.net/20.500.11937/27916 10.1094/CCHEM-01-16-0003-R A A C C International restricted |
| spellingShingle | Wu, Gangcheng Johnson, Stuart Bornman, Janet Bennett, Sarita Singh, V. Fang, Z. Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title | Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title_full | Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title_fullStr | Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title_full_unstemmed | Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title_short | Effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| title_sort | effect of genotype and growth temperature on sorghum grain physical characteristics, polyphenol content, and antioxidant activity |
| url | http://hdl.handle.net/20.500.11937/27916 |