Total and Free Amino Acid Profiles in Four Rice Cultivars

Authors

  • Khanittha Kaewsong ภาควิชาชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา
  • Siriporn Sripinyowanich
  • Thanapoom Siringam
  • Wasinee Pongprayoon

Abstract

Total amino acids (hydrolyzed amino acids) and free physiological amino acids indicate nutritional values and metabolic changes. This research aimed to study in four rice cultivars such as Khao Ban Na 432, RD45, Prachin Buri 1 and Prachin Buri 2 in terms of their chemical compositions (protein, starch, and reducing sugar). Total amino acids and free physiological amino acids were investigated using GC-MS. Results showed that RD45 had a protein content at 8.72 g/100g followed by Prachin Buri 2 (8.45 g/100g), Khao Ban Na 432 (7.60 g/100g) and Prachin Buri 1 (7.53 g/100g). However, there were no significant differences in starch and reducing sugar contents. Seven amino acids (Val, Leu, Ile, Pro, Glu, Asp and Phe) were significantly different (p < 0.05). The average Leu and Glu contents of Khao Ban Na 432, RD45 and Prachin Buri 2 were 0.74 and 1.55 g/100g, respectively. For free amino acids, it was noted that Khao Ban Na 432 contained the highest levels of Asn and GABA (22.46 and 11.61 mg/100g). These results provide a valuable addition to the nutrition database of amino acid profiles of floating and deepwater rice cultivars and could contribute to breeding high quality rice. Keywords :  profile, total amino acid, free amino acid, rice

Author Biography

Khanittha Kaewsong, ภาควิชาชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา

      

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Published

2018-09-10