Effects of physico-chemical treatment on ‘Nunkeunhukchal’ (black sticky rice with giant embryo) for the enhancement of GABA (ᵧ- aminobutyric acid) contents

Sang-Ik Han; Ji-Eun Ra; Kyung-Hye Seo; Ji-Young Park; Woo Duck Seo; Dong-Soo Park; Jun-Hyun Cho; Jong-Hee Lee; Eun-Yeong Sim; Min-Hee Nam

doi:10.7740/kjcs.2014.59.4.398

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Original Research Article

Effects of physico-chemical treatment on ‘Nunkeunhukchal’ (black sticky rice with giant embryo) for the enhancement of GABA (ᵧ- aminobutyric acid) contents ‘눈큰흑찰’의 가바(GABA) 함량 증진을 위한 이화학적 처리 효과

31 December 2014. pp. 398-405

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Abstract

We assessed the GABA accumulation and other components after the ‘Nunkeunhukchal (BGE)’, ‘Josanghukchal (BR)’, and ‘Ilmibyeo (IB)’ grain was soaked in water for 24, 36, 48, 60, 72 and 96 hr. The results showed a continuous accumulation of GABA in soaking treated brown rice of BGE and IB. Among the treated hours, 72 hours of soaking had the maximal accumulation of GABA (51.4 mg/100 g), amino acid, polyphenol and other components. The activities of glutamate decarboxylase (GAD) in brown rice and rice-bran were the same in BGE rice. However, the formation of GABA treated with L-glutamate as substrate showed dramatic increase of 354.6 (fourteen times higher than normal extraction) and 726.4 mg/100 g in BGE rice and rice-bran, respectively. These results suggested that the soaking and extraction with L-glutamate buffer could be better methods for the harvest of increased GABA.

Keywords

rice

‘Nunkeunhukchal’

soaking

germination

GABA

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 59
No :4
Pages :398-405
Received Date : 2014-06-20
Revised Date : 2014-10-13
Accepted Date : 2014-10-29
DOI :https://doi.org/10.7740/kjcs.2014.59.4.398

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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