Biosaintifika: Journal of Biology & Biology Education
Vol 12, No 3 (2020): December 2020

Identification of Gamma-Amino Butyric Acid Isolates Lactic Acid Bacteria Results from The Isolation of Rusip

Prayitno, S Feta Avila (Unknown)
Suprihadi, Agung (Unknown)
Kusdiyantini, Endang (Unknown)

Article Info

Publish Date
19 Dec 2020


Gamma-aminobutyric acid (GABA) is a non-protein amino acid produced by glutamate decarboxylation by the enzyme glutamate decarboxylase and it is widely distributed in plants, animals and microorganisms. GABA-producing microorganisms including Lactic Acid Bacteria (LAB) which play a role in the fermentation process of food such as rusip. Rusip is a preserved food of marine fish made from raw anchovy of Bangka-Belitung. The purpose of this study was to obtain LAB isolates through the process of isolation from rusip and identify the presence of GABA. Isolation of LAB was carried out by the pour method on MRS agar and NA medium. The growing colonies were then characterized based on observations of colony morphology, Gram staining, catalase test, motility test, and fermentation type test. LAB isolates obtained were selected to obtain isolates which are capable to produce GABA using the Thin Layer Chromatography (TLC) method. The results of isolation from rusip and inoculation on MRS agar medium obtained, three LAB isolates namely RSP-A1, RSP-A2, and RSP-A3. Their characteristics are Gram positive bacteria, negative catalase test, negative motility test, and belong to homofermentative and heterofermentative bacteria groups. They were also able to produce GABA. Research on GABA from isolates isolated from rusip is a new thing in the world of GABA research. This research provides information that is beneficial to produce GABA easily, cheaply, and efficiently.

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Agriculture, Biological Sciences & Forestry


Biosaintifika Journal of Biology & Biology Education, an electronic international journal, provides a forum for publishing the original research articles, review articles from contributors, and the novel technology news related to biological research and biological ...