Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Biologi Tropis Seminar Nasional Peningkatan Mutu Pendidikan
Tri Rima Setyawati
Universitas Tanjungpura
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Languange, Linguistic, Communication & Media Public Health Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Aktivitas Enzimatik Streptomyces spp. Yang Diisolasi Dari Usus Dan Feses Cacing Nipah (Namalycastis rhodochorde) Rikhsan Kurniatuhadi; Ari Hepi Yanti; Tri Rima Setyawati
SEMINAR NASIONAL PENINGKATAN MUTU PENDIDIKAN Vol. 1 No. 1 (2020): Seminar Nasional Peningkatan Mutu Pendidikan
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Streptomyces terlibat dalam proses degradasi senyawa organik pada substrat pakan cacing nipah (Namalycastis rhodochorde). Streptomyces mensekresikan beberapa enzim untuk memecah makromolekul organik menjadi senyawa sederhana yang tersedia bagi detritivor cacing nipah. Penelitian ini bertujuan untuk mendeteksi aktivitas enzim enam Streptomyces spp. yang telah diisolasi sebelumnya dari usus dan feses cacing nipah. Aktivitas enzim dideteksi pada empat media yang berbeda: CMC-congo red agar, skim milk agar, gelatin nutritive agar, dan starch agar. Aktivitas katalase dideteksi menggunakan 3% larutan H2O2. Hasil penelitian menunjukkan bahwa enam Streptomyces spp. memiliki aktivitas selulolitik, amilolitik, pencairan gelatin, dan katalase. Namun hanya dua dari enam isolate Streptomyces spp yang memiliki aktivitas protease, yaitu Streptomyces NrAFA2 dan Streptomyces NrAFA4. Streptomyces NrAFA4 memiliki nilai indeks aktivitas proteolitik dan selulolitik tertinggi, yaitu 0,54 dan 1.0. sedangkan nilai indeks aktivitas selulolitik tertinggi terjadi pada isolat Steptomyces NrAFA3 yaitu 1.57. Profil aktivitas enzimatik Streptomyces spp. Yang diisolasi dari usus dan feses cacing nipah dapat dimanfaatkan untuk pengembangan formula pakan untuk budidaya cacing nipah.
Colonization of Nipa Worms (Namalycastis spp.) Based on Differences in Depth of Placement of Nipah Fronds in Kakap River of West Kalimantan Jennifer Vasilya Panirman; Tri Rima Setyawati; Junardi
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.6165

Abstract

Namalycastis spp. is deposit feeder animal because it eats by utilizing organic matter and omnivorous. The existence of Namalycastis has been found inhabit naturally decomposing nipa fronds (Nypa fruticans). Data regarding the colonization of Namalycastis are currently not available. The purpose of the study is to discover the first time and the peak of colonizations and the number of individual Namalycastis based on the depth of placement of different nipa fronds in Kakap River Mangrove Area of West Borneo. Sampling was carried out at three depths: 0-10 cm, 10-20 cm, and 20-30 cm for three months within a 10 days collection period. The highest number of Namalycastis individual during the study were found in nipa fronds placed at depth of 0-10 cm is 616 individuals with the highest number found in week 4 of incubation. Soil texture in Sungai Kakap mangrove forest was dominated by dust with C-organic content decreased as the number of individual nipa worms decreased.
Co-Authors Ari Hepi Yanti Jennifer Vasilya Panirman Junardi Junardi Rikhsan Kurniatuhadi, Rikhsan