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γ-Aminobutyric acid (GABA) production and soluble free amino acid profile change in Andean seeds by Levilactobacillus brevis fermentation

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Bibliographic Details
Title: γ-Aminobutyric acid (GABA) production and soluble free amino acid profile change in Andean seeds by Levilactobacillus brevis fermentation
Authors: Ibieta, Gabriela, Ortiz-Sempértegui, Jimena, Grey, Carl, Peñarrieta, J. Mauricio, Linares-Pastén, Javier A.
Contributors: Lund University, Faculty of Engineering, LTH, Departments at LTH, Department of Process and Life Science Engineering, Division of Biotechnology and Applied Microbiology, Lunds universitet, Lunds Tekniska Högskola, Institutioner vid LTH, Institutionen för processteknik och tillämpad biovetenskap, Avdelningen för bioteknik och teknisk mikrobiologi, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Food and Bio, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Livsmedel och bioteknik, Originator
Source: Frontiers in Nutrition. 12
Subject Terms: Agricultural and Veterinary sciences, Agriculture, Forestry and Fisheries, Food Science (including Product Quality), Lantbruksvetenskap och veterinärmedicin, Jordbruk, skogsbruk och fiske, Livsmedelsvetenskap (Här ingår: Produktkvalitet), Engineering and Technology, Chemical Engineering, Teknik, Kemiteknik
Description: High nutritional value Andean seeds—tarwi (Lupinus mutabilis), cañihua (Chenopodium pallidicaule), and quinoa (Chenopodium quinoa)—were subjected to solid-state fermentation with Levilactobacillus brevis DSM 1269. This strain can convert L-glutamic acid into the neurotransmitter GABA. Fermented tarwi exhibited the highest GABA production, at 4 mg/g sample, which correlates with its higher protein content compared to fermented quinoa and cañihua, at 1 mg/g and 0.3 mg/g, respectively. Seeds kept at room temperature before fermentation produced higher concentrations of GABA compared to seeds kept at 4 °C. Autoclaving, a mandatory step for fermentation, resulted in a decrease in L-glutamic acid in tarwi seeds and an increase in quinoa and cañihua seeds. Additionally, fermentation produced lactic acid and acetic acid, together with an increase in the content of free essential amino acids, including threonine, histidine, methionine, isoleucine, leucine, valine, and lysine. This work demonstrated, for the first time, the functional valorisation of tarwi, cañihua, and quinoa through the production of bioactive metabolites and the enhancement of essential free amino acids via fermentation with L. brevis.
Access URL: https://doi.org/10.3389/fnut.2025.1693053
Database: SwePub
Description
Abstract:High nutritional value Andean seeds—tarwi (Lupinus mutabilis), cañihua (Chenopodium pallidicaule), and quinoa (Chenopodium quinoa)—were subjected to solid-state fermentation with Levilactobacillus brevis DSM 1269. This strain can convert L-glutamic acid into the neurotransmitter GABA. Fermented tarwi exhibited the highest GABA production, at 4 mg/g sample, which correlates with its higher protein content compared to fermented quinoa and cañihua, at 1 mg/g and 0.3 mg/g, respectively. Seeds kept at room temperature before fermentation produced higher concentrations of GABA compared to seeds kept at 4 °C. Autoclaving, a mandatory step for fermentation, resulted in a decrease in L-glutamic acid in tarwi seeds and an increase in quinoa and cañihua seeds. Additionally, fermentation produced lactic acid and acetic acid, together with an increase in the content of free essential amino acids, including threonine, histidine, methionine, isoleucine, leucine, valine, and lysine. This work demonstrated, for the first time, the functional valorisation of tarwi, cañihua, and quinoa through the production of bioactive metabolites and the enhancement of essential free amino acids via fermentation with L. brevis.
ISSN:2296861X
DOI:10.3389/fnut.2025.1693053