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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 12 Documents
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Search results for , issue " Vol 15, No 3 (2016)" : 12 Documents clear
POTENSI ANTIBAKTERI TIGA SPESIES BAKTERI ASAM LAKTAT ASLI ENGGANO TERHADAP BAKTERI PATOGEN DAN PEMBUSUK MAKANAN [Antibacterial Potential of Three Indigenous Lactic Acid Bacteria Species from Enggano Against Pathogenic and Food Spoilage Bacteria] sulistiani, sulistiani; Khusniati, Tatik
BERITA BIOLOGI Vol 15, No 3 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2879.838 KB) | DOI: 10.14203/beritabiologi.v15i3.2410

Abstract

Lactic acid bacteria (LAB) strains have been known for their antimicrobial compounds that are important for food industry,including extension of expired time for food products. In this study, LAB isolates were isolated anaerobically from coconut sap using MRSA medium. Antibacterial analysis was carried out using microdilution method on microplate. The antibacterial assay showed that 85 isolates of LAB exhibit antibacterial activities against Escherichia coli, Salmonella enterica, Staphylococcus aureus, Pseudomonas aeruginosa, Listeria monocytogenes, and Bacillus cereus. Molecular identification of 13 physiologically characterized LAB strains based on 16S rDNA sequence determined three species, namely, Leuconostoc mesenteroides (strain EN17-1, EN17-8, EN17-12, EN17-15, EN17-34, EN17-41, EN17-43, EN17-45, EN17-46, EN38-34), Lactobacillus fermentum (strain EN17-2, EN38-44) and L. satsumensis strain EN38-32. The strong and wide broad spectrum antibacterial activity was produced by L. satsumensis strain EN38-32. 
KEANEKARAGAMAN KHAMIR YANG DIISOLASI DARI SUMBER DAYA ALAM PULAU ENGGANO, BENGKULU DAN POTENSINYA SEBAGAI PENDEGRADASI SELULOSA [Diversity of Yeasts Isolated From Natural Resources of Enggano Island, Bengkulu and Its Cellulolytic Potency] Sumerta, I Nyoman; Kanti, Atit
BERITA BIOLOGI Vol 15, No 3 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i3.2220

Abstract

The present study revealed the occurrence and diversity of yeasts from natural resources of Enggano Island. The yeasts were isolated from soil, sediment, leaf, leaf litter, fruit, and flower. Isolation was performed using direct plating, membrane filtration, ballistospore-falling and enrichment culture using glucose, xylose and xylan as carbon source. After isolating, yeasts were screened for its cellulolytic potency. The occurrence of yeasts in different isolation technique are clearly found. Most of 87 yeasts isolated, abundant in leaf, soil, and sediment sample. The total yeasts isolated were classified into 32 species based on D1/D2 LSU 26S rDNA sequences analysis which genera of Candida were predominant (33%). The predominant yeast species were identified as Candida tropicalis (16,1%), Cyberlindnera saturnus (16,1%), and Rhodosporidium paludigenum (11,5%). Screening on carboxymethyl cellulose medium, there are 43 isolates within 22 yeasts species have cellulolytic activity. Four species of Basidiomycetous have high activity which includes Pseudozyma antartica Y15Eg001; Pseudozyma hubeiensis Y15Eg015; Anthracocystis chrysopogonis Y15Eg072; Cryptococcus laurentii Y15Eg017 and two from Ascomycetous are Sarocladium bactrocephalum Y15Eg226, Y15Eg227. Some of cellulolytic yeast isolates are indicated as new species candidate and required to reconfirm in another conserve regions to ensure its taxonomic position. Various yeasts isolated from Enggano Island with its cellulolytic potency should contribute to scientific information regarding microbial genetic resources of outer islands of Indonesia.

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