Agustina, Didin Wahyu
Nuscientech Publishing

Published : 2 Documents
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The Difference of Macro-Benthic Diversity in Riparian Vegetation and less Vegetation Area Agustina, Didin Wahyu; Khoirunnisa, Wulida; Anzila, Ivakhul; Retnaningdyah, Catur
Plant and Animal Research Journal Vol 1 No 2 (2018): Volume 1 Issue 2
Publisher : GALAXY SCIENCE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (446.478 KB) | DOI: 10.11594/parj.01.02.04

Abstract

Bedengan a secondary forest area is located in Selorejo village, Dau subdistrict, Malang. Riparian landscape in Bedengan area occur degradation caused by human activities that make areas in Bedengan as citrus plantation and camping area. This study aimed to compare benthic macroinvertebrate community structures between riparian vegetation and less riparian vegetation on camping area Bedengan Stream. The sampling sites were divided into five types of the stream: less vegetation area (pool and current) and riparian vegetation area (pool, current and riparian). There are 21 taxa founded in Bedengan stream that distribute 10 taxa can be found in less vegetation (9 taxa in current area and 6 taxa in pool area) and 20 taxa can be found pada area vegetation (10 taxa in current area, 14 taxa in pool area, and 17 taxa in riparian area). There are 21 taxa founded in Bedengan stream that distribute 10 taxa can be found in less vegetation (9 taxa in current area and 6 taxa in pool area) and 20 taxa can be found pada area vegetation (10 taxa in current area, 14 taxa in pool area, and 17 taxa in riparian area). The habitat character will determine the abundance of benthic macroinvertebrates in this context the more species in a location the better the quality of the habitat.  
Identification Microorganism which have most stable β-galactosidase Enzyme Based on Conformational Stability Karina, Sheilla W; Agustina, Didin Wahyu; Mu'jizah, Elzafa Y; Sari, Aprilia K
Bioinformatics and Biomedical Research Journal Vol 1 No 1 (2018): Volume 1 Issue 1
Publisher : Galaxy Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.059 KB)

Abstract

Lactose intolerant is a condition which people can not hydrolyze lactose into glucose and galactoside. Recently Asia have 80% intolerant people in number. Body can hydrolyze and absorb lactose because they have β-galactosidase enzyme in their digestive system which intolerant people did not have it. Dairy food industry such as milk, cheese, yoghurt and other low lactose usually adding β-galactosidase enzyme using microorganism as source, but sometimes β-galactosidase was isolated from microorganism has low stability. This project aim to find microorganisms that produce most stable β-galactosidase and could be recommended for commercial industries to producing food with low lactose. This research use two step, Homology Modeling of β-galactosidase enzyme from 10 microorganism by swiss model and calculates the free energy of unfolding using FoldX at Yasara software. Based on energy of protein stability the highest stability is Bacterioides thetainomicron and Eschericia coli. Keywords: β-galactosidase, Homology modeling, Microorganism, Protein stability