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Nattawat Thitipramot; Nisakorn Sae-won; Phanuphong Chaiwut; Punyawatt Pintathong; Nont Thitilertdecha; Natthanej Luplertlop; Asadhawut Phiranrat. |
The objective of this study was to determine proanthocyanidins and anthocyanins content and their antioxidant activity from four pigmented rice: Black glutinous, Homnin, Man-Pu, Sangyod by extract with 6 different solvents: DI water, 1%HCl-DI water, Ethanol, 1%HCl-Ethanol, Acetone, 1%HCl-Acetone. The results showed that the proanthocyanidin and anthocyanin contents were different between rice phenotypes and polarity of solvents (p<0.05). The total proanthocyanidin contents followed the order: Man-Pu, Sangyod, Homnin, Black glutinous. The highest proanthocyanidin content was found in ethanolic extract of Man-Pu rice (0.938 mg ECE/mg extract). Black glutinous rice contained high amount. Total anthocyanin content of the extracts followed the trend: Black... |
Tipo: PhysicalObject |
Palavras-chave: Man pu rice; Sangyod rice; Black glutinous rice; Hom nin rice; Pro anthocyanin; Anthocyanin; Antioxidant activity; Pigmented rice; ข้าวมันปู; ข้าวสังข์หยด; ข้าวเหนียวดำ; ข้าวหอมนิล; โปรแอนโทไซยานิน; แอนโทไซยานิน; ฤทธิ์ต้านอนุมูลอิสระ. |
Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5427 |
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Kanyakarn Poonsiri; Kanlaya Kongngaon. |
Light intensity is an important factor affected rice growth and productivity. A comparative study on the effects of light intensity were investigated in three cultivars of black glutinous rice No.19, 27 and 51. Seeds were hydroponically grown for 30 days then divided into 3 groups: grow under natural light condition (300 Klux) and under low light condition 2 levels (3 and 1 Klux) using shaded net. The effect of light intensity on four growth-stages including; seedling, tillering, heading and maturity was observed. The results showed that the low light intensity caused decrease fresh weight, dry weight and anthocyanin contents in all cultivars. Moreover, the heading stage had higher anthocyanin content than other stages. The No. 51 had the highest level of... |
Tipo: PhysicalObject |
Palavras-chave: Black glutinous rice; Light intensity; Anthocyanin; ข้าวเหนียวดำ; ความเข้มแสง; แอนโทไซยานิน; การเจริญเติบโต; ผลผลิต. |
Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5417 |
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