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All Journal Microbiology Indonesia Pedagogi: Jurnal Pendidikan Dasar PROSIDING SEMINAR KIMIA BERITA BIOLOGI ZOO INDONESIA PROSIDING SEMINAR NASIONAL LEMBAGA PENELITIAN DAN PENDIDIKAN (LPP) MANDALA Zoo Indonesia Aptekmas : Jurnal Pengabdian Kepada Masyarakat Safari : Jurnal Pengabdian Masyarakat Indonesia Jurnal Nusantara Berbakti Jurnal Manajemen Dan Bisnis Ekonomi Mengabdi: Jurnal Hasil Kegiatan Bersama Masyarakat Opportunity Jurnal Penelitian dan Pengabdian Masyarakat Prosiding Seminar Nasional Ilmu Ekonomi dan Akuntansi
Dewi Wulansari
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Journal : BERITA BIOLOGI

 1 
AKTIVITAS ANTIBAKTERI DAN ANTIOKSIDAN EKSTRAK IXORA CUMINGIANA Kartika Dyah Palupi; Praptiwi Praptiwi; Dewi Wulansari; Andria Agusta
BERITA BIOLOGI Vol 19, No 1 (2020)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v19i1.3777

Abstract

Plants from Ixora genus exhibit a variety of pharmacological activities including antioxidant, antibacterial, and antitumor activities. This plants may contain many interesting bioactive compounds, especially phenolics and terpenoids groups. Ixora cumingiana is one of the Ixora species whose pharmacological effect has not been explored comprehensively. This study aimed to evaluate the antibacterial and antioxidant activity of eight extracts from bark and leaf of I. cumingiana. The plant samples were successively extracted using n-hexane, dichloromethane, ethyl acetate and methanol. The antibacterial evaluation was carried out against Staphylococcus aureus and the antioxidant activity was evaluated using a radical scavenging assay against 1,1-diphenyl-2-picrylhydrazyl (DPPH). Initial activity screening was performed using thin layer chromatography-bioautography followed by the determination of minimum inhibitory concentration (MIC) and the determination of antioxidant activity index (AAI) using microdilution technique. The dichloromethane extract of the bark as well as the n-hexane and dichloromethane extract of the leaf of I. cumingiana exhibited moderate antibacterial effect with MIC value of 128, 128, and 256 µg/ml, respectively. The methanol extract from the bark displayed a strong antioxidant activity (AAI = 1.5±0.13) and possessed the highest total phenolic content (43±0.91 mg AGE/ g extract). These experimental results showed that I. cumingiana is potential to be developed as an antioxidant agent rather than as an antibacterial agent. 
TOKSISITAS AKUT ORAL DUA SENYAWA BISANTRAKUINON (+)-2,2’-EPISITOSKIRIN A DAN (+)-1,1’-BISLUNATIN [Oral Acute Toxicity of Two Bisanthraquinones (+)-2,2’-Epicytoskyrin A and (+)-1,1’-Bislunatin] Praptiwi Praptiwi; Arif Nurkanto; Dewi Wulansari; Andria Agusta
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i1.1858

Abstract

Bisanthraquinones (+) - 2,2'-epicytoskyrin A and (+) -1,1'bislunatin produced by the endophytic fungus Diaporthe sp. GNBP-10 showed potent antibacterial activity on in-vitro test and have the opportunity to become new antibiotics candidates. The aspects of safety and toxicity of drug candidates have to be examined before applying to human. This study was conducted to determine the safety aspects of the compounds through acute oral toxicity testing in mice (Mus musculus). Acute toxicity of (+) - 2,2'-epicytoskyrin A and (+) - 1,1'-bislunatin evaluated by the method of Up and Down Procedure with limit test at a dose of 2000 mg / kg. Results of acute toxicity test showed that the LD50 of (+) - 2,2'-epicytoskyrin A and (+) - 1,1'-bislunatin were of 1638.87 mg / kg and > 2000 mg / kg respectively. Administration of (+)- 2,2'-epicytoskyrin A resulted in increased miliari multifocal hepatitis, fatty degeneration and necrosis of liver cells, and the renal tubule epithelial degeneration. Administration of (+) - 1,1'-bislunatin at a dose of 2000 mg / kg resulted in multifocal accumulation of inflammatory cells in the liver and degeneration of cells in the islets of Langerhans although not resulting in death. The administration of those compounds indicated the changes in the organs, but based on the UN/ECE classification of LD50 value showed that (+) 2,2'- epicytoskyrin A and (+) -1,1'-bislunatin included as low acute toxicity substance.
SKRINING AWAL AKTIVITAS ANTIBAKTERI DAN ANTIOKSIDAN EKSTRAK SEMUT (INSECTA: FORMICIDAE) DARI GARUT - JAWA BARAT Oscar Efendy; Ahmad Fathoni; Praptiwi Praptiwi; Mohammad Fathi Royyani; Dewi Wulansari; Andria Agusta
BERITA BIOLOGI Vol 18, No 2 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i2.3621

Abstract

Studies on the therapeutic use of insects and insect products have been neglected compared to the use of other animals or plants.This study aims to determine the antibacterial and antioxidant potential of ants extracts. Preliminary study related to antibacterial and antioxidant screeningof 17 extracts of ant colonies that belongs to 8 species were performed by Thin Layer Chromatography (TLC)-Bioautography. Antioxidant activity was measured by DPPH free radical scavenging method. The antibacterial activity was done against three pathogenic bacteria, i.e Bacillus subtilis InaCC B-1, Staphylococcus aureus InaCC B-4 and Escherichia coli InaCC B-5 were performed by non-eluted TLC-autobiography assay. The minimum inhibitory concentration (MIC) and IC50 values of DPPH radical scavenging activity of active extracts were determined by microdilution in 96-well microplate. The results showed 6 extracts active against B.subtilis, 5 extracts active against S.aureus. The lowest MIC value was 512 µg/ ml.  Ten extracts had the antioxidant activity with various IC50 values. The extracts of ants might be used as bioactive resources for antibacterial and antioxidant.  
Co-Authors Abdullah Hasan Busri AHMAD FATHONI Andi Saptaji Kamal Andria Agusta ANDRIA AGUSTA ARIEF NURKANTO Arif Nurkanto Arwin Surbakti Darsono Darsono Desi Apriyanty Dody Tri K Erik Putra Sadaliya Fadilah Tri Wahyuni Fatiin Khalimatus Zahro Ashari Herlinda Kusmiati Intan Permata Sari Jamhari Jamhari Kartika D. Palupi Kartika Dyah Palupi Marlin Megalestin Raunsai Moh. Hamdani Indra Saputra Mohammad Fathi Royyani Muhammad Tengku N.L.P. Rischa Phadmacanty Nur Diana Khalida Sukma Nur Jumriatunnisah Oscar Efendy Praptiwi Praptiwi Praptiwi Praptiwi Rafikatul Lisyana Mashudah Renaldy Nur Hidayatullah Resti Aryani Rifki Adi Rahman Saifuddin Saifuddin Silvia Agustina Siti Nasihatul Magfiroh Siti Novita Asti Sugiarto, Sri Tolak Iyam Vanessa Eldinda Putri Viona viona, Viona Wasil Afandi YULIASRI JAMAL