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Harini Nurcahya
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INDONESIA
Journal of Tropical Biodiversity
Published by Universitas Nasional Jakarta
ISSN : -     EISSN : 27744116     DOI : -
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Immunology & microbiology
Journal of Tropical Biodiversity, ISSN : 2774-4116 (Online) is an international journal that publishes articles on all aspects of biological diversity-its description, analysis and conservation, and its controlled rational use by humankind. The scope of Biodiversity and Conservation is wide and multidisciplinary, and embraces all life-forms. published by Universitas Nasional Jakarta
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Hewan dan Zoologi
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 1 (2020): December 2020" : 5 Documents clear
Antibacterial Activities of Ethanol Extracts Fruit Bodies of Ganoderma Lucidum and Rigidoporus Microphorus Against Escherichia Coli and Staphlyococcus Aureus Noverita Noverita; Ritchie Y.H L.T
Journal of Tropical Biodiversity Vol 1 No 1 (2020): December 2020
Publisher : Universitas Nasional Jakarta

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Abstract

Ganoderma lucidum and Rigidoporus microporus are two examples of macro fungi that are commonly found in forest areas in the highlands of Indonesia, and are even found in lowlands such as in urban forests in DKI Jakarta. Many of these macro fungi have been reported as potential medicinal substances, especially from the species G. lucidum, whose fruit bodies are usually obtained from forests in upland areas. The purpose of this study was to determine the antibacterial activity of the fungi G. lucidum and R. microporus obtained from several places in South Jakarta against the growth of E. coli and S. aureus bacteria. Testing for antibacterial activity was carried out using the Kirby-Bauer diffusion method. The results showed that the extract of G. lucidum fruit bodies was only able to inhibit the growth of S. aureus bacteria. While the fruit body extract of R. microporus was able to inhibit both types of tested bacteria (E. coli and S. aureus). The results showed that G. lucidum extract was only able to inhibit S. aureus bacteria. Meanwhile R. microporus extract was able to inhibit E.coli and S.aureus. There was no significant effect of increasing the concentration of mushroom fruit extract on the inhibition zone of the tested bacteria.
Acute and Subchronic Toxicity Of Temu Tis (Curcuma purpurascens) Rhizome in White Rat(Rattus norvegicus) Suprihatin Suprihatin; Carles Tambunan; Ernawati Sinaga
Journal of Tropical Biodiversity Vol 1 No 1 (2020): December 2020
Publisher : Universitas Nasional Jakarta

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Abstract

Temu tis (Curcuma purpurascens BI) is a species of Curcuma that has not been widely studied. Although it is not very well known, temu tis is also used as a traditional medicine to treat coughs, stomach aches, and skin infections. The results of several studies proved that temu tis rhizome extract has bioactivity as an antioxidant and anti-cancer. Temu tis is also proven to contain flavonoids, terpenoids, triterpenoids, steroids, and essential oils. Because it contains bioactive substances, it is estimated that temu tis rhizome extract has the potential to be used as a medicine, therefore its safety needs to be tested. In this study, an acute and subchronic toxicity test was conducted for the ethanol extract of temu tis rhizome which was given orally to white mouse (Rattus norvegicus) using various increased doses to see the toxic effects, both qualitative and quantitative, and subchronic effects in an increase of serum level measurements for both serum glutamic pyruvic transaminase (SGPT) and serum glutamic oxaloacetic transaminase (SGOT). From the results, there was no visible toxic effect and mortality of mouse in the doses tested, namely between 1250-5000 mg/Kg body weight with the administration for 14 days. From the calculation results, the LD50 value of temu tis rhizome extract is greater than 5000 mg/Kg body weight, so it is classified into category 5 or non-toxic according to the Globally Harmonized System of Classification (GHS). Subchronic toxicity test results also showed that the administration of temu tis extract for 28 days in a dose range of 1,250-5,000 mg /Kg body weight did not significantly affect the activity of the SGOT and SGPT enzymes in the experimental mouse.
Performance and Productivity of Local Chicken Cross Third Generation At Age 1 to 10 Weeks H Nurcahya; S Darwati; I.J. Tambunan
Journal of Tropical Biodiversity Vol 1 No 1 (2020): December 2020
Publisher : Universitas Nasional Jakarta

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Abstract

Local chickens had some advantages such as high adaptability and resistance to disease, so they can be raised in remote rural areas. However, there are several drawbacks including the relatively slow growth. One way to overcome these weaknesses is by conducting cross-breeding and selection so that the productivity of chickens can increase. The aim of this research was to evaluate the product of crossbreeding between SkkeduxkeduSK and SkkeduxkeduSK chickens. The chickens used in this research were 43 DOC SKkeduxkeduSK and 46 KeduSKxSKkedu DOC. This research used T test was to determine the difference in average body weight, feed consumption, feed conversion and mortality from crosses between kedu chickens and sentul-kampung chickens. Crossbreeding between SkkeduxkeduSK and SkkeduxkeduSK chickens. The feed given was in 3 phases: 1) 100% commercial feed for 0-3 week old chickens, 2) 80% commercial feed mixed with 20% rice bran for 4 week old chickens and 3) 60% commercial feed mixed with 40% rice bran for 5-10 week old chickens.The variables measured included body weight, feed consumption, feed conversion and mortality. between SKkeduxkeduSK and KeduSKxSKkedu were not significantly different. SKkeduxkeduSK and KeduSKxSKkedu chickens had the same growth. The body weight of crossbreeding between SKkeduxkeduSK and keduSKxSKkedu reached 0.8 – 0.9 kg at the age 10 week. SKkeduxkeduSK and keduSKxSKkedu chickens were quite efficient in the use of feed with a conversion value of 3.0-3.7. But the mortality on this crossbreeding chickens was still quite high as it reached 3% in the population.
Identification of Macro-Algae Species in Sindangkerta Beach, Tasikmalaya District, an Effort to Explore the Biodiversity of Indigenous Species Sri Handayani; Cipto Utomo; Nuraidah Nuraidah; Indrastiwi Pramuliati; Achmad Fahreza
Journal of Tropical Biodiversity Vol 1 No 1 (2020): December 2020
Publisher : Universitas Nasional Jakarta

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Abstract

Sindangkerta beach has a total area of ​​90 ha, located in the Sindangkerta village, which is one of the natural tourism areas located on the south coast of West Java, which became one of the mainstays of Tasikmalaya regency. The tourist area is relatively unspoiled and has not maximized its potential. Aside from being a tourist area, Sindangkerta Beach is also a conservation area for sea-turtle breeding. As one of the conservation areas and a tourist spot is certainly a lot of pressure and ecological threats. Handling indigenous species diversity is very important and urgent treated as early as possible to monitor the occurrence of extinction and efforts to develop the existing potential. Data species and morphological descriptions for basic data management and enrichment of biodiversity, especially in Sindangkerta Beach Tasikmalaya. This study was conducted in June 2013 at the Sindangkerta Coastal Waters, District Cipatujah, Tasikmalaya District, West Java Province. The method used Line Transect Square. Sampling was carried out during low tide using square plot. All types of macroalgae found in the square plot were calculated for the number of individuals before the identification process. Macroalgae found in Sindangkerta Beach were 25 species and 17 genera of 3 divisions namely Chlorophyta, Phaeophyta, and Rhodophyta. The highest abundance of macroalgae is Padina australis and Sargassum duplicatum, while the lowest abundance is Halimeda discoidea, Halimeda macroloba, and Laurencia sp. Types of macroalgae that dominate a group Sindangkerta Beach Aquatic included as Phaeophyta (brown algae) categories with the highest dominance type of Padina autralis.
Phytochemical, Antibacterial and Antioxidant Activities Test of Three Macro-Algae Phaeophyceae Extracts from Pulau Tidung Coastal Kepulauan Seribu Sri Handayani; Suprihatin Suprihatin; Retno Widowati; Nyoman Yudi; Indra Rahayu
Journal of Tropical Biodiversity Vol 1 No 1 (2020): December 2020
Publisher : Universitas Nasional Jakarta

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Abstract

Macro-algae is a Thallophyta plant that has been known to have potential as a food and medicine ingredient, one of that is in the Kepulauan Seribu, particularly on Pulau Tidung coastal. Therefore this study aimed to explore the potential of three types of macro-algae: Hormophysa triquerta, Padina austraslis, and Sargassum binderi (Phaeophyceae) on the Pu;au Tidung coastal by revealing the phytochemical content, antibacterial, and antioxidant activity. The design used in this study was completelyrandomized factorial designs. The phytochemicals tested were flavonoid, alkaloid, tannin, saponin, quinon, steroid, and terpenoid. Antibacterial were tested by diffusion wel method on Muller Hinton agar in a petri dishes with a size of 100 mm and a thickness of 10 mm. The three tested macro-algae were extracted using methanol solvent and divided into four concentrations: 5%, 10%, 15%, and 20%. The test bacteria used were Staphylococcus aureus ATCC 6539 and Escherichia coli ATCC 8739. Observation of the antibacterial test was carried out 24 hours after incubation at 370C. Antioxidant activity at concentrations of 100, 200, 300, 500, 700 ppm was carried out by the DPPH (1,1-diphenil-2-pikrylhidrazyl) method. The results of phytochemical tests showed that flavonoids and steroids were found in the three macro-algae tested, while saponins were only found in S. binderi. The results of the inhibition zone showed that the three macroalgae extract tested did not inhibit E. coli bacteria. The largest inhibition zone was shown at a concentration of 20% against S. aureus bacteria, namely, H. triquerta = 10.09 ± 0.89, P. austraslis = 11, 46 ± 1.09, and S. binderi 8.00 ± 1.29. The regression results of the tested macro -algae antioxidant activity showed that the IC50 values were 13,290 ppm (H. triquerta), 3,800 ppm (P. australis), and 4,053 ppm (S. binderi).

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