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Journal of Tropical Biodiversity and Biotechnology

jtbb
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Published by Universitas Gadjah Mada

ISSN : 25409573 EISSN : 25409581 DOI : -

Core Subject : Science, Agriculture, Social,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

Journal of Tropical Biodiversity and Biotechnology (JTBB) is an authoritative source of information concerned with the advancement of tropical biology studies in the Southeast Asia Region. It publishes original scientific work related to a diverse range of fields in tropical biodiversity, functional biology, and biotechnology.

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Articles 5 Documents

Search results for , issue "Vol 2, No 1 (2017): June" : 5 Documents clear

Identifikasi Bakteri Pada Serasah Daun Mangrove yang Terdekomposisi di Kawasan Konservasi Mangrove dan Bekantan (KKMB) Kota Tarakan Y. Yulma; Burhanuddin Ihsan; S. Sunarti; Eka Malasari; Neny Wahyuni; M. Mursyban
Journal of Tropical Biodiversity and Biotechnology Vol 2, No 1 (2017): June
Publisher : Universitas Gadjah Mada

Bacteria in mangrove ecosystem has a significant role in litter decomposition that is essential to provide organic nutrition for organisms in mangrove forest. The research was aimed to identify decomposition bacteria that exist in KKMB Tarakan mangrove conservation area. The identification focused on litters from several mangrove vegetation, which are Bruguiera parviflora, Rhizophora apiculata, Sonneratia alba, dan Avicennia alba. The method used was explorative descriptive while testing parameter was genus. The research identified seven bacteria genera for litter from Bruguiera parviflora which are Bacillus, Aeromonas, Nocardiae, Corynebacterium, Listeria, Bacteroides, Pseudomonas. Six genera from Rhizophora apiculata which are Bacillus, Listeria, Enterobacteria, Aeromonas, Actinobacilus, and Bacteroides. Five genera for Sonneratia alba which are Bacillus, Aeromonas, Listeria, Enterobacteria, Staphylococcus. Also eight genera from Avicennia alba which are Bacillus, Clostridium, Enterobacteria, Bacteroides, Plesiomonas, Bordella, Streptococcus, and Neisseria. The results conclude that different species of mangrove vegetation attracts different species of bacteria as well.

Root Anatomy and Growth of Capsicum frutescens L. on Verticulture with Different Watering Supply Fitria Rahayu Ratmadanti; M.M. Maryani
Journal of Tropical Biodiversity and Biotechnology Vol 2, No 1 (2017): June
Publisher : Universitas Gadjah Mada

The rapid increase in human population reduces land productivity in urban areas. Verticulture is a way of planting in a vertical arrangement, such as for Capsicum frutescens L. This study aimed to examine the root anatomy and growth responses of C. frutescens L. Fourteen days old seedlings were grown in polybags on the ground and into vertical pots made of paralon pipe. Watering was given for every day, once in 3 days, and once in 6 days were apllied for 35 days, at elevation of 0 cm, 25 cm, 50 cm and 75 cm. The lower watering supply decreased the root diameter due to the thinner of cortical, xylem and stele tissues. Decreased in plant height, leaf number, length-width of leaves, and fresh and dry weight of root-shoots were also observed in low watering plants, but there were increases in roots length and leaves chlorophyll content. The xylem was less developed in plants at higher position compared to the lower positon and this was more detected in plants with less watering. Decreasing plant growth occurs in conditions of water shortage and the higher plant layout on paralon, while root vascullar tissue was less developed in less watering and higher position plants.

Uji Aktivitas Antibakteri Campuran Ekstrak Biji Kelor (Moringa oleifera) dan Daun Kersen (Muntingia calabura) terhadap Pseudomonas aeruginosa dan Bacillus subtilis Syuhuud Arumbinang Wajdi; Sri Kasmiyati; Susanti Puji Hastuti
Journal of Tropical Biodiversity and Biotechnology Vol 2, No 1 (2017): June
Publisher : Universitas Gadjah Mada

Moringa oleifera and Muntingia calabura leaves have been reported to have an antibacterial activity that could inhibit the growth of gram positive and negative bacteria. However, the antibacterial activity of mixed extracts of M. oleifera seeds and M. calabura leaves has not been widely reported. The purpose of this study was to test antibacterial activity of the mixed extract of M. oleifera seeds and M. calabura leaves on the growth of Pseudomonas aeruginosa and Bacillus subtilis. The experiment was conducted by agar disc diffusion method using three groups of extract treatments i.e. M.oleifera seeds extract, M.calabura leaves extract, and mixed extracts of M. oleifera seeds and M. calabura leaves with a ratio of 1: 1 (v / v). The extraction of M. oleifera seeds and M. calabura leaves was conducted by soxhlation method and using ethanol as solvent. The three groups of extract treatments with a concentration of 400 ppm, 800 ppm, 1200 ppm, and 1600 ppm were tested on P. aeruginosa. The antibacterial activity test of M. oleifera seed extract against B. subtilis carried out at the level of concentrations i.e. 150 ppm, 300 ppm, 450 ppm, 600 ppm, and 750 ppm, meanwhile, M. calabura leaves extract was done at concentration 1500 ppm, 3000 ppm, 4500 ppm, 6000 ppm, and 7500 ppm. The result showed that the three groups of extract treatments possess antibacterial activity against P. aeruginosa. The mixed extracts of M. oleifera seeds and M. calabura leaves with a ratio of 1: 1 (v / v) at level concentration of 400 ppm and 800 ppm were tested against P. aeruginosa significantly increased, and at concentrations of 1200 ppm and 1600 ppm significantly decreased the inhibition diameter of bacterial growth than the other extracts treatments. The antibacterial test results of M.oleifera seeds extract and M.calabura leaves extract against B. subtilis shows that increased concentrations of the extract significantly increase the inhibition diameter of bacterial growth especially at high concentrations ( 600 ppm and 750 ppm) on M. oleifera seeds extract, as well as 6000 ppm and 7500 ppm in M. calabura leaves extract.

Bioaktivitas ekstrak batang Xylocarpus granatum sebagai anti black spot alternatif pada Litopenaeus vannamei pasca panen Lanny Kartikasari; Awik Pudji Diah Nurhayati; Edwin Setiawan; Dewi Hidayati; Nova Maulidina Ashuri; Noor Nailis Saadah; Farid Kamal Muzaki; Iska Desmawati
Journal of Tropical Biodiversity and Biotechnology Vol 2, No 1 (2017): June
Publisher : Universitas Gadjah Mada

This research was done to explore bioactivity of Xylocarpus granatum’s stem extract as tyrosinase inhibitor for alternative preventing black spot in Litopenaeus vannamei postharvest. In this research, extraction of bioactive compound from X. granatum stem was done by soaking the stem in 96% methanol for 24h at temperature 29°C. The methanol was evaporated by using rotary evaporator at temperature 50°C. The extract was dilute with distillate water at series of dilutions (10%, 30%, 50%, 70%, 90%, and distillate water as the control), and then immersing L. vannamei into X. granatum’s stem extract as much as 10ml for 6h, and finally the data analyzing use the Kruskal Wallis test and the Least Significant Difference (LSD) test with the degree of confident 95%. The result showed that X. granatum’s stem extract is able to prevent a black spot of L. vannamei after harvesting process. Furthermore, concentration of 10 % of extract is an effective concentration for preventing a black spot and the control has black spot 0.0360 – 0.0373 mm2.

Pemanfaatan dan Efektivitas Kegiatan Penangkaran Penyu di Bali bagi Konservasi Penyu Eterna Firliansyah; Mirza Dikari Kusrini; Arzyana Sunkar
Journal of Tropical Biodiversity and Biotechnology Vol 2, No 1 (2017): June
Publisher : Universitas Gadjah Mada

Sea turtle has been widely consumed in Bali since the 1970s mostly for religious activities. After many international critics, various stakeholders (governments, NGOs, environmentalists and Balinese people) developed the so-called “turtle conservation centre” as means to conserve sea turtles. The purpose of this study is to assess the effectiveness of those conservation efforts by evaluating the conservation activities of each conservation centres. We visited five sea turtle conservation centres in Bali; all were named as captive breeding centres or farm. The captive breeding centre is misleading as there is no activity related to captive breeding, mostly hatchery. Some of the eggs were not even originated from Bali, and the centres were sometimes used as the source for sea turtle for religious purposes. Based on the scoring, only one centre is active in terms of conservation. Turtle conservation program in Bali should increase their in situ program, i.e. mapping and protecting the nesting habitat and conducting regular monitoring of nesting turtle.

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Daerah istimewa yogyakarta

INDONESIA