Pyridoxal phosphate promotes the γ-aminobutyric acid accumulation, antioxidant and anti-hypertensive activity of germinated tartary buckwheat
文献类型： 外文期刊
作者： Yan, Huiling 1 ; Chen, Hongxu 1 ; Liu, Juan 2 ; Yao, Tian 1 ; Xia, Mengying 1 ; Liao, Qingxia 1 ; Huang, Ludong 1 ; Li, Wanjie 1 ; Song, Yu 1 ; Peng, Lianxin 1 ; Zhao, Jianglin 1 ; Zou, Liang 1 ; Zhao, Gang 1 ;
作者机构： 1.Chengdu Univ, Minist Agr & Rural Affairs, Sichuan Prov Engn Technol Res Ctr Coarse Cereal In, Sch Food & Biol Engn,Key Lab Coarse Cereal Proc, Chengdu 610106, Sichuan, Peoples R China
2.Guangdong Acad Agr Sci, Rice Res Inst, Key Lab Genet Breeding High Qual Rice Southern Chi, Minist Agr & Rural Affairs,Guangdong Key Lab New T, Guangzhou 510640, Peoples R China
关键词： Glutamate; GABA shunt; Antioxidant; Anti-hypertensive
期刊名称：JOURNAL OF CEREAL SCIENCE （ 影响因子：3.7； 五年影响因子：4.3 ）
ISSN： 0733-5210
年卷期： 2024 年 120 卷
页码：
收录情况： SCI
摘要： gamma-Aminobutyric acid (GABA), a main inhibitory neurotransmitter, is essential for various biofunctions but is inadequately synthesized by the body. Tartary buckwheat (TB), with its medicinal and culinary uses, is a potential GABA source, yet its natural GABA content is low. Herein, the application of pyridoxal phosphate (PLP) led to a significant increase in GABA content, reaching 3.82 g kg(-1) in PLP-treated germinated TB (PLP-GTB), which is a 9.67-fold increase compared to ungerminated TB (UTB). This elevation in GABA was associated with the activation of glutamate decarboxylase (GAD), an increase in the substrate glutamate (Glu), and the up-regulation of key gene expression (GAD, GS1/2 and GOGAT). Furthermore, PLP-GTB displayed the strongest inhibitory effect on angiotensin-converting enzyme (ACE) activity and exhibited the highest levels of DPPH and ABTS radical scavenging capabilities. Collectively, our findings present a strategy for GABA enrichment in TB, potentially enhancing its anti-hypertensive and antioxidant properties.
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