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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Canrea Journal: Food Technology, Nutritions, and Culinary Journal
Putri, Sastia Prama
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Antibacterial compounds derived from marine Streptomyces aureofaciens A3 through in-silico molecular docking Srikandace, Yoice; Syani, Ira Rhabbiyatun; Wahhaab, Aisha; Kamarisima, Kamarisima; Putri, Sastia Prama; Aditiawati, Pingkan
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.3.403-413

Abstract

Streptomyces aureofaciens widely produces the antibiotic tetracycline and many other compounds during fermentation. The compounds have yet to be known for their antibacterial potential. This work aims to determine new antibiotics or other possible antibacterial compounds produced by marine S.aureofaceiens A3 through an in silico molecular docking method. The ethyl acetate (EA) extracts from fermented marine S. aureofaciens A3 in ISP4 medium enriched with seawater components showed strong antibacterial activity.  The antibacterial activity of EA extracts during 6-12 days of fermentation was carried out by the Kirby-Bauer method and the compounds of EA extracts were analyzed by GC/MS. Compounds identified by GC/MS were ligands for an in silico molecular docking study against four target proteins (DNA gyrase, topoisomerase IV, PBP 1a, and DHFR) of pathogenic bacteria. The drug-likeness of selected chemicals as antibacterial agents was assessed using Lipinski's Rule of Five. The results showed the prospective compounds as a narrow-spectrum antibacterial, including 3,5-di-tert-Butyl-4-hydroxyphenylpropionic acid against PBP 1a and Benzenepropanoic acid, and 3,5-bis (1,1-dimethyl ethyl)-4-hydroxy-, methyl esters against DHFR. Substances with broad-spectrum antibacterial activity, such as 3-Acetylphenanthrene and 3-(p-Ethoxyphenyl)-5-(O-tolyloxymethyl)-2-oxazolidone, against multitarget DNA gyrase B and DHFR, 7,9-Di-tert-butyl-1-oxaspiro (4,5) Deca-6,9-diene-2,8-dione against PBP1a and DHFR, and isobenzofuro [5,6-b] benzofuran-8-carboxylic acid, 1,3-dihydro-7,10-dimethoxy-9-methyl-1-oxo-, methyl ester against DNA gyrase B, PBP 1a, and DHFR. On the 12th day of fermentation, two compounds were identified: isobenzofuro[5,6-b] benzofuran-8-carboxylic acid, 1,3-dihydro-7,10-dimethoxy-9-methyl-1-oxo-, methyl ester, and 3-(p-Ethoxyphenyl)-5-(O-tolyl oxy methyl)-2-oxazolidone.  This is the first report that these two compounds, known as potential drugs like antibiotics through in silico molecular docking, were first produced by Streptomyces species.
Comparative metabolomic analysis of Tempe from velvet bean, soybean, and their combination Ramdhani, Rizal Pauzan; Tryas, Anisha Ayuning; Astawan, Made; Wresdiyati, Tutik; Sardjono, Ratnaningsih Eko; Rafidha Irdiani; Putri, Sastia Prama
jurnal1 VOLUME 8 ISSUE 1, JUNE 2025
Publisher : Hasanuddin University Food Science and Technology Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/canrea.v8i1.1487

Abstract

Tempe, an Indonesian fermented soybean product, is a popular choice as a source of protein. Currently, Indonesia is very dependent on imported soybeans. Therefore, using local beans as raw material for tempe is necessary to reduce import dependence. Velvet beans (Mucuna pruriens) are legumes that have not been well utilized because they have many anti-nutritional compounds. Velvet beans have high carbohydrate and protein contents and other metabolites that can be utilized as antioxidant functional foods.Therefore, this research aims to analyzed the metabolites profile and explore the potential of velvet beans to partially replace soybeans in making tempe. Velvet bean seeds (VBS) and the tempe made from soybeans (SBT), velvet beans (VBT), and their combination (CSVT) were analyzed for metabolites profile by Gas Chromatography-Mass Spectrometry (GC-MS), and antioxidant activity by DPPH test (IC50). Multivariate Principal Component Analysis (PCA) of the metabolomics study showed that all samples were separated based onPrincipal Component (PC) 1 with 58.3% variation caused by fermentation process. It was shown that organic acids and sugar derivatives were on the positive axis, while amino acids were on the negative axis. In addition, the samples were separated based on PC2 with a variation of 35.8%, which was caused by differences in its bioactive components. Allantoin and DOPA compounds were on the negative axis, while genistein and daidzein were on the positive axis. The lowest IC50 value for tempe was found in VBT (361 ppm),then followed by CSVT (2,216 ppm) and SBT (15,704 ppm). These results indicate that adding velvet beans to make tempe can increase its antioxidant capacity. CSVT had more diverse metabolites, which could increase their antioxidant activity. Furthermore, CSVT presents a promising avenue for local functional food diversification, particularly in supporting efforts to reduce the consumption of imported soybeans.
Co-Authors Kamarisima, Kamarisima MADE ASTAWAN PINGKAN ADITIAWATI Rafidha Irdiani Ramdhani, Rizal Pauzan Ratnaningsih Eko S. Srikandace, Yoice Syani, Ira Rhabbiyatun Tryas, Anisha Ayuning Tutik Wresdiyati Wahhaab, Aisha