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All Journal Biodiversitas Journal of Biological Diversity
SUMARYATI SYUKUR
Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Andalas. Jl. Raya Unand, Limau Manis, Padang 25175, West Sumatra, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Potential antioxidant activity of Lactobacillus fermentum KF7 from virgin coconut oil products in Padang, West Sumatra, Indonesia SUMARYATI SYUKUR; SAFRIZAYANTI SAFRIZAYANTI; SITI ZULAIHA; EPI SUPRIWARDI; AULIA FAHMI; KUNTUM KH NURFADILAH; ENDANG PURWATI
Biodiversitas Journal of Biological Diversity Vol. 23 No. 3 (2022)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d230354

Abstract

Abstract. Syukur S, Safrizayanti, Zulaiha S, Supriwardi E, Fahmi A, Nurfadilah KK, Purwati E. 2021. Potential antioxidant activity of Lactobacillus fermentum KF7 from virgin coconut oil products in Padang, West Sumatra, Indonesia. Biodiversitas 23: 1628-1634. The isolation and characterization of five commercial Virgin Coconut Oil (VCO) products circulating in the local market of Padang city were conducted. In this study, eighteen isolates of lactic acid bacteria (LAB) were isolated and characterized microscopically, and biochemically. VCO-LAB isolates were Gram-positive bacilli and cocci, catalase-negative, and homofermentative (except VD was heterofermentative). There were three isolates of VCO-LAB (VB.3, VD and VE.4) that could produce gamma-aminobutyric acid (GABA). The highest concentration of GABA (19.5 mg/mL) was produced by isolate VB.3 after 72 hours of incubation and the addition of 7% MSG. VB.3 isolate shows the highest antioxidant activity with the addition of Monosodium glutamate (MSG), 68.13% for 2,2-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) ABTS and 88.02%. In addition, GABA-producing VCO-LAB could be grown in media containing 0.2-1.0 mM hydrogen peroxide, with the lowest optical density value of 0.82 nm. The antioxidant activity of VCO-LAB was affected by the GABA produced and by secondary metabolites such as peptides and antioxidant enzymes (NADH-oxidase, superoxide dismutase, NADH peroxidase and non-heme catalase). The highest antioxidant production was obtained in isolate VB.3 or Lactobacillus fermentum KF7.
Genotypic identification and catechin profiling of Uncaria gambir in West Sumatra, Indonesia EPI SUPRI WARDI; SUMARYATI SYUKUR; ZULKARNAIN CHAIDIR; JAMSARI JAMSARI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 3 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250330

Abstract

Abstract. Wardi ES, Syukur S, Chaidir Z, Jamsari J. 2024. Genotypic identification and catechin profiling of Uncaria gambir in West Sumatra, Indonesia. Biodiversitas 25: 1151-1158. The primary objective of this study is to assess genetic and chemical variability among four genotypes of Uncaria gambir cultivated in West Sumatra. Uncaria gambir is native to Indonesia, widely cultivated in West Sumatra, used as an herbal remedy, and become a significant agricultural product for Indonesian export with catechin content as a standard. The phytochemical components of this species have been extensively studied, and its extracts are employed in traditional medicine. To fingerprint genomic DNA, we employed three pairs of Specific Sequence-Related Amplified Polymorphism (SRAP) markers selected from 29 combinations tested. A total of 150 amplified bands were generated, highlighting substantial genetic variability among the tested genotypes. Notably, the highest amplified and polymorphic band was obtained with primer E combination from three selected primers (primer E, primer F, and primer T). In addition, only catechins were identified among the four types of catechins employed as HPLC standards. We detected varying catechin concentrations among the genotypes, with genotype Mancik exhibiting the highest concentration. This finding underscores the potential for genotype-specific bioactive marker identification within U. gambir. In addition, this study shows the efficiency of SRAP markers in genotype identification within U. gambir. Furthermore, the identification of catechin as a prominent bioactive marker emphasizes its significance for further exploration and conservation efforts.
Co-Authors AULIA FAHMI ENDANG PURWATI EPI SUPRIWARDI EPI SUPRI WARDI Jamsari Jamsari KUNTUM KH NURFADILAH SAFRIZAYANTI SAFRIZAYANTI SITI ZULAIHA ZULKARNAIN CHAIDIR