Sequential hydration with anaerobic and heat treatment increases GABA (γ-aminobutyric acid) content in wheat

Youn, Young-Su; Park, Jung-Kil; Jang, Hae‐Dong; Rhee, Young‐Woo

doi:10.1016/j.foodchem.2011.06.020

Cited by 56 publications

(33 citation statements)

References 25 publications

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“…The GABA content in barley bran after the simple decarboxylation reaction in this study was higher than that in germinated brown rice after soaking and gas treatment during germination (Komatsuzaki and others ). Furthermore, the GABA content in barley bran after the reaction in this study was higher than those in rice bran, whole wheat grains, and soybeans (Sadami and others ; Youn and others ; Shigeaki and others ). A previous study has reported that rice bran can be used to produce GABA (Sadami and others ).…”

Section: Resultssupporting

confidence: 39%

“…Another previous study revealed that the accumulation of GABA in rice grains during water soaking is related to the GAD activity, and that GAD is the rate‐limiting enzyme for GABA synthesis (Liu and others ). Recently, previous studies have reported that GABA enrichment in different cereals can be achieved by steeping or anaerobic treatment in water under optimal conditions (Saikusa and others ; Youn and others ). Previous studies have reported that anaerobic treatment can increase GABA production in rice (Aurisano and others ), radish leaves (Shelp and others ), and soybean seeds (Streeter and Thompson ).…”

Section: Resultsmentioning

confidence: 99%

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Utilization of Barley or Wheat Bran to Bioconvert Glutamate to γ‐Aminobutyric Acid (GABA)

Jin

Kim

2013

Journal of Food Science

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This study deals with the utilization of agro-industrial wastes created by barley and wheat bran in the production of a value-added product, γ-aminobutyric acid (GABA). The simple and eco-friendly reaction requires no pretreatment or microbial fermentation steps but uses barley or wheat bran as an enzyme source, glutamate as a substrate, and pyridoxal 5'-phosphate (PLP) as a cofactor. The optimal reaction conditions were determined on the basis of the temperatures and times used for the decarboxylation reactions and the initial concentrations of barley or wheat bran, glutamate, and PLP. The optimal reactions produced 9.2 mM of GABA from 10 mM glutamate, yielding a 92% GABA conversion rate, when barley bran was used and 6.0 mM of GABA from 10 mM glutamate, yielding a 60% GABA conversion rate, when wheat bran was used. The results imply that barley bran is more efficient than wheat bran in the production of GABA.

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Section: Resultssupporting

confidence: 39%

Section: Resultsmentioning

confidence: 99%

Utilization of Barley or Wheat Bran to Bioconvert Glutamate to γ‐Aminobutyric Acid (GABA)

Jin

Kim

2013

Journal of Food Science

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“…It has functions including lowing blood pressure and improving brain functions (Youn et al . ). Previous study showed that GABA could be accumulated in brown rice by soaking in water under hypoxia condition (Jiang ).…”

Section: Introductionmentioning

confidence: 97%

Activation and Tempering on Γ-Aminobutyric Acid Accumulation and Distribution in Brown Rice

Yang

Geng

2016

Journal of Food Processing and Preservation

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Brown rice absorbing water slowly under atomization environment, its endogenous enzymes could be activated and the activated brown rice was formed. At the same time, functional components such as c-aminobutyric acid (GABA) could be accumulated in the activated brown rice. In this study, brown rice was activated through raising temperature in gradient and then tempering for several hours. Results showed that raising temperature as 30-50-70C got higher GABA content. After activation under 30-50-70C, tempering at 40C for 10 h and dried to moisture content of 15%, GABA content in activated brown rice and its 15 s milled rice were 24.77 and 21.24 mg/100g DW, respectively, which were 3.99-and 8.63-fold of those in raw brown rice and 15 s milled rice, respectively. During 10 h of tempering, GABA transferred from aleurone layer to endosperm, and the activated brown rice got the relative lower broken ratio after milling. PRACTICAL APPLICATIONSBased on slowly absorbing water, endogenous enzymes in brown rice are activated within the short time. So that GABA accumulated and crack ratio decreased. Tempering resulted in the transfer of GABA from aleurone layer to endosperm. As a result, white rice with higher GABA content could be obtained after milling.

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“…최근의 연구는 이러한 질병 의 치료에 사용하기 위한 기능성 식품에 관심이 집중되고 있 다. 연구자들은 GABA가 풍부한 기능성 식품을 만들기 위하 여 녹차 [8], 현미 [9], 보리 [10], 밀 [11], 홍국미 [12] 등 다양 한 종류의 식물을 유산균 발효를 통하여 GABA생산에 관한 연구를 수행하였다. 그러나 이러한 유산균을 이용한 GABA 의 생산증진 방법은 유산균의 대사과정을 이용하기 때문에 GABA의 생산성에 한계가 있다 [13].…”

Section: Introductionunclassified

Effects and Optimization of Gamma-Amino Butyric Acid (GABA) Production Process using Glutamate Decarboxylase (GAD)

김의진¹,

이중헌²

2014

KSBB Journal

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pH controlled batch reactor and bubble column reactors have been developed in this research. They were used to produce high concentration of GABA and to determine optimal pH for GABA production. Glutamate decarboxylase (GAD) was isolated from recombinant E. coli and used for GABA production from monosodium glutamate (MSG). pH control was inevitable because the pH increased with MSG consumption. GAD showed highest activity at acidic conditions at pH 5.5 but the optimal pH for GABA production was pH 6.0. When 1.5 mole of MSG was used as reactant, the 1.05 mole of GABA was produced after 10 hrs batch reaction. Using bubble column reactors, 80 % of MSG was converted to GABA for 6 hrs reaction and 1.2 mole of GABA was produced.

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Sequential hydration with anaerobic and heat treatment increases GABA (γ-aminobutyric acid) content in wheat

Cited by 56 publications

References 25 publications

Utilization of Barley or Wheat Bran to Bioconvert Glutamate to γ‐Aminobutyric Acid (GABA)

Utilization of Barley or Wheat Bran to Bioconvert Glutamate to γ‐Aminobutyric Acid (GABA)

Activation and Tempering on Γ-Aminobutyric Acid Accumulation and Distribution in Brown Rice

Effects and Optimization of Gamma-Amino Butyric Acid (GABA) Production Process using Glutamate Decarboxylase (GAD)

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