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All Journal HAYATI Journal of Biosciences
Waite, Mashuri
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Exploring Indonesian Sponge-Associated Marine Aspergillus hortai: Characterization of Bioactive Compounds with Potential Anti-Escherichia coli Properties Fadillah, Wendi Nurul; Sukarno, Nampiah; Iswantini, Dyah; Rahminiwati, Min; Franco, Christopher MM; Zhang, Wei; Hanif, Novriyandi; Waite, Mashuri
HAYATI Journal of Biosciences Vol. 31 No. 4 (2024): July 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.4.712-724

Abstract

Sponge-associated marine fungi are potential source for secondary metabolite compounds. The aim of this research was to investigate sponge-associated marine fungus as secondary metabolite producers against Escherichia coli. The fungus was isolated from Indonesian marine sponge Stylissa sp. and identified as Aspergillus hortai through a combination of morphological and molecular characteristics of ITS DNA and β-tubulin genes. The fungus was tested against E. coli using fungal broth and mycelial extracts. The optimized condition was achieved by fungal broth grown in corn meal broth at 6-days of shaking incubation. Fungal extract was produced using three liters of filtered fungal broth and extracted in ethyl acetate. The antibiotic activity of the extract is vulnerable to 45°C heat and basic or acidic conditions. Therefore, the extraction was done at pH 7 with evaporation at 40°C. The extract shows 7 major bands on TLC with 1 band shows activity against E. coli (Rf 0.81) on bioautogram. The band was observed as a yellow color and turned black in short-wave UV and did not show any fluorescence in long-wave UV. This research shows that sponge-associated marine fungi obtained from Indonesia has the potential as anti E. coli worth to be explored for searching new antibiotics.
Co-Authors Dyah Iswantini Fadillah, Wendi Nurul Franco, Christopher MM Nampiah Sukarno Novriyandi Hanif Rahminiwati, Min Wei Zhang