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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Science and Technology Indonesia Jurnal Penelitian Sains IJEMS (Indonesian Journal of Environmental Management and Sustainability) QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Berkala Penelitian Hayati Sriwijaya Bioscientia Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat BIOVALENTIA: Biological Research Journal Jurnal Pepadu Jurnal Manusia dan Lingkungan Jurnal Medika: Medika

Elisa Nurnawati

Biology Department, Faculty Of Mathematics And Natural Sciences, Sriwijaya University, Indonesia

Author-ID : 3516002

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Antibacterial Activity of Endophytic Fungi from Sembukan (Paederia foetida L.) Leaves Hary Widjajanti; Christina Vivid Handayani; Elisa Nurnawati
Science and Technology Indonesia Vol. 6 No. 3 (2021): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

The antibiotic resistance of phatogenic bacteria has become a serious health problem and has encouraged the search for novel and effective antimicrobial metabolites. Meanwhile, endophytic fungi have great potential as a natural source for antimicrobial agents. The endophytic fungi that live in plant tissue produces secondary metabolites which potentially act as an antibacterial compound. The isolation of fungi for antibacterial sources reduces the large amount of plant as a source of antibacterial agents. Hence, this study aims to obtain endophytic fungi isolates from Paederia foetida L. that are capable of producing secondary metabolites as antibacterial, carry out in vitro tests to verify the antibacterial properties of secondary metabolites of the Paederia foetida L. endophytic fungi, and identify the potential of Paederia foetida L. endophytic fungi in producing antibacterial compounds. The antibacterial activity was tested against Escherichia coli ATCC8739 and Staphylococcus aureus ATCC6538 while seven isolates of endophytic fungi that potentially produced antibacterial were obtained from Sembukan (P. foetida L.). The results showed that antibacterial activities of SL1, SL4 and SL6 secondary metabolites against S. aureus ATCC6538 and E. coli ATCC8739 were moderate to strong activities. Furthermore, the Minimum Inhibition Concentration (MIC) of secondary metabolites extract of SL1 against S. aureus ATCC6538 value was 250 ????g/mL while the values of MIC extract of SL4 against S. aureus ATCC6538 and E. coli ATCC8739 were 125 ????g/mL and 250 ????g/mL respectively and MIC extract of SL6 against E. coli ATCC8739 value was 125 ????g/mL. The secondary metabolites extract of SL1 isolate were alkaloid and tannin, SL4 were phenolic and alkaloid while SL6 isolate were alkaloid and terpenoid. Hence, endophytic fungi SL1 isolate was identified as Fusarium sp., SL4 as Dematophora sp., and SL6 isolate as Acremonium sp.

Optimization of Antibacterial Production of Endophytic Fungi with Various Sources of C, N, and pH using The Response Surface Methodology Hary Widjajanti; Elisa Nurnawati; Muharni; Eca Desriana Zahwa
Science and Technology Indonesia Vol. 7 No. 2 (2022): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Secondary metabolites extract of McB1 endophytic fungi from gelam (Melaleuca cajuputi Powell.) leaves have a high potential antibacterial activity against Escherichia coli ATCC8739 and Staphylococcus aureus ATCC6538 with flavonoids and phenol as bioactive compound. The low production of secondary metabolites extract in the cultivation stage and the high potential antibacterial activity of bioactive compounds produced by McB1 endophytic fungi require special treatment for optimize the secondary metabolites product. This is possibly achieved by optimizing the composition of the cultivation media, where various sources of carbon, nitrogen, and pH produce different amounts and classes of secondary metabolites. The objectives of the research to obtain the optimum interaction between sources of carbon, nitrogen, and pH for the production of secondary metabolite extract using Response Surface Methodology (RSM). The results showed that the highest extract (0.25 g) with the composition of sucrose as carbon source, yeast extract as nitrogen source, and pH 6. Based on the optimization of the medium with a variation of 4.5 gL-1 sucrose, 0.48 gL-1 yeast extract, and pH 6.1 yielded 0.34 g of secondary metabolites extract of McB1 endophytic fungi. The chromatogram profile of the optimized secondary metabolite extract showed the presence of flavonoids, phenols, terpenoids, and tannins.

Isolation and Molecular Identification of Direct Red 80 Synthetic Dye Degradation Bacteria from Palembang Indonesia Jumputan Cloth Industrial Waste Muharni; Elisa Nurnawati; Heni Yohandini; Hary Widjajanti
Science and Technology Indonesia Vol. 8 No. 3 (2023): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.3.429-435

Industrial waste from Jumputan cloth production pose a significant risk to environmental safety due to their toxic synthetic dye content. Several studies have shown that the presence of bacteria in these materials plays a very important role in decolorization process of the constituent dye. Therefore, this study aims to isolate bacteria with the ability to decolorize direct red 80 from Jumputan cloth industrial waste. Characterization of isolates was carried out macroscopically, microscopically, and biochemically, followed by molecular identification using the 16S rRNA gene. Decolorization effects of the samples on red dye 80 were then assessed using a spectrophotometer at a maximum wavelength of 528 nm. The results showed that 6 bacteria isolates can degrade dye, with decolorizing power ranging from 26.33±0.94 - 73.67±0.47. The highest potential for decolorizing waste synthetic dye is seen in isolate BD 05. Phylogenetic analysis showed that there were 3 genera of bacteria among the samples obtained, namely Bacillus, Aeromonas, and Pseudomonas. These bacteria were closely related to Bacillus tropicus, Areomonas jandaei, and Pseudomonas stutzeri. Pseudomonas stutzeri (BD 05) has the highest potential in handling jumputan industrial waste.

Antidiabetic Activity of Endophytic Fungi Extract from Leaves of Kembang bulan (Tithonia diversifolia (Hemsley) A. Gray) Through α-Amylase Enzyme Inhibition Putri, Hanindita Alifia; Elisa Nurnawati; Widjajanti, Hary
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.350-359

Diabetes mellitus is a serious health problem with an increasing number of sufferers. In this context, an important method for controlling blood sugar levels is the derivation of α-amylase enzyme inhibitors from natural materials such as endophytic fungi. Therefore, this research aimed to analyze the potential of endophytic fungi from Tithonia diversifolia leaves as α-amylase enzyme inhibitors, secondary metabolites, as well as the character and identity of potential endophytic fungi. The stages included isolation and identification of endophytic fungi, extraction of secondary metabolites, α-amylase inhibition tests, analysis of bioactive compounds using Thin Layer Chromatography (TLC), and identification of potential endophytic fungi. The results showed that DT3J1 (67.83 µg/mL), DM3J1 (69.36 µg/mL), DT2J2 (80.42 µg/mL), and DT4J1 (88.64 µg/mL) of the eight endophytic fungi isolates reported high potential as inhibitors of the α-amylase enzyme, with IC50 values classified as strong. Potential fungal extracts contain bioactive compounds such as alkaloids, flavonoids, phenols, and terpenoids. Meanwhile, molecular identification showed that potential endophytic fungi consisted of Curvularia pseudointermedia, Diaporthe passifloricola, Nodulisporium verrucosum, and Muyocopron laterale species. This research also provided scientific evidence on the potential of the endophytic fungus Tithonia diversifolia as a candidate for antidiabetic drugs.

Co-Authors Ady Mara, Ady Afreni Hamidah Agung Bimantara Alfarado, Daniel Ali Djamhuri Andika Puspita Dewi Asiandu, Angga Puja Christina Vivid Handayani Daniel Alfarado Desnelli Desnelli Desnelli Desnelli Eca Desriana Zahwa Eka Amelia Elfita Elfita Endro Setyo Cahyono, Endro Setyo Erni Martani Erni Martani Erni Martani Evi Yuliza Evi Yuliza, Evi Fatma Ferlinahayati Ferlinahayati Fitri Maya Puspita Fitri Maya Puspita Fitrya Fitrya Harmida Harmida Harmida Harmida Harry Widjajanti Harvianti, Yuniar Hary Widjajanti Hary Widjajanti Hary Widjajanti Hary Widjajanti Heni Yohandini Heni Yohandini Indrawati Indrawati Indrawati Indrawati Jurnal Pepadu Laila Hanum LANGKAH SEMBIRING Langkah Sembiring M.Ridha Mauludi Mardiyanto Mardiyanto Maulida Harwati Mega Tiara MUHAMMAD SAID Muhammad Said Muharni Muharni Muharni, . Mustafa Kamal Mustafa Kamal Niko Erlangga Nina Tanzerina Nita Aminasih Nurkayah, Nurkayah Poedji Loekitowati Hariani Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun, Putra Bahtera Jaya Putri, Hanindita Alifia Rizkiani, Delisa Robinson Sitepu Rosmania, Rosmania Salni Salni Sarno Sarno Sarto Sarto Sarto Sebastian Margino Sebastian Margino Sebastian Margino Sisca Octarina Siti Alharzsa Suheyanto Suheryanto Sutandar, Vivi Hendra Umi Kalsum Widjajanti, Haryati Ahda Yadi Oktariansyah

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