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Irwan Effendi
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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 16, No 2 (2016)" : 5 Documents clear
Penggunaan Bahan Organik dan Kombinasinya dalam Formulasi Biofungisida Berbahan Aktif Jamur Trichoderma pseudokoningii Rifai. untuk Menghambat Jamur Ganoderma boninense Pat. secara in vitro Elfina, Yetti; Ali, Muhammad; Saputra, Rachmad
Jurnal Natur Indonesia Vol 16, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.615 KB) | DOI: 10.31258/jnat.16.2.79-90

Abstract

Trichoderma pseudokoningii has been applied as a biocontrol agent against fungal plant pathogen, such as Ganoderma boninense, the cause of stem rot disease on palm oil plants. To be more effectively applicable in the field, some experiments have been employed to formulate T. pseudokoningii in a biofungicide formulation amended with organic matter as its main nutrient resource, zealot as a carrier agent and cocoyam powder as a mixture agent. A research has been conducted to study the effect of various organic matters and their combinations in a biofungicide formulation of T. pseudokoningii on growth inhibition to G. boninense in-vitro and to obtain the best organic matters and their combinations in enhancing the growth of T. pseudokoningii and yet inhibiting G. boninense. The research has been conducted in the Laboratory of Plant Pathology, Agriculture Faculty, University of Riau from May to August 2012, using a completely randomized design consisting of 15 treatments (bagasse, rice husk, shrimp shell, dregs, and their combinations) and 3 replications. The data were statistically analyzed using analysis of variance, followed by Duncan’s New Multiple Range Test (DNMRT). The results indicated that organic matters and their combinations in the biofungicide formulation significantly affected the antagonistic capacity of T. pseudokoningii in inhibiting the growth of G. boninense in vitro. Rice husk, bagases, bagasse+rice husks, and bagasse+dregs were the best organic matters in enhancing the growth of T. pseudokoningii and its capacity to inhibit G. boninense in-vitro. It can also be concluded that shrimp shell, bagasse+shrimp shell, rice husk+shrimp shell, shrimp shell+dregs and rice husk+shrimp shell+dregs totally inhibited the growth of T. pseudokoningii in the biofungicide formulation.
Polimorfisme Penanda RAPD untuk Analisis Keragaman Genetik Pinusmerkusii di Hutan PendidikanUnhas Gusmiaty, Gusmiaty; Restu, Muh.; Asrianny, Asrianny; Larekeng, Siti Halimah
Jurnal Natur Indonesia Vol 16, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.822 KB) | DOI: 10.31258/jnat.16.2.47-53

Abstract

The aims of Genetic study of pinus identified stand in Unhas Experimental Forest is to analyses of genetic characteristics of stand, based on RAPD (Random Amplified Polymorphic DNA) marker. The study was conducted in Biotechnology and Tree Breeding Laboratory, Forestry Faculty, Hasanuddin University. The method are DNA isolation, Primers selection and RAPD analyses. DNA analyses of Pine with ten RAPD marker showed number of alel varietied and polymorphic. Coefficient of similarity in population have number of 0.15-0.73.Highest genetic distance is 0.9630 and lowest genetic distance is 0.2698. Number of genetic diversity of Pine in Experimental Forest Hasanuddin University is 0,489 and categorized highly.
Respon Histopatologis Hepar Mencit (Mus musculus) yang Diinduksi Benzo(α)Piren terhadap Pemberian Taurin dan Ekstrak Daun Sirsak (Annona muricata) Agata, Annisa; Widiastuti, Endang Linirin; Susanto, G. Nugroho; ', Sutyarso
Jurnal Natur Indonesia Vol 16, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.872 KB) | DOI: 10.31258/jnat.16.2.54-63

Abstract

Cancer is a disease that is characterized by the existence of damage and cell abnormality in growth and differentiation. Liver cancer is a disorder of hepar tissue derivated from its tumors. Taurine is known as antioxidant but its role as anticancer needs to be explored more as well the role of Annona muricata leaf extract which is believed to have its role as anticancer substance. This research, therefore, aimed to explore the effect of taurine and Annona muricata leaf extract on the hepar histopathology of male mice (Mus musculus) induced by benzo(α)pyren in vivo. This research was carried out by using a complete randomized design, which consisted of 5 treatment groups which was repeated 5 times. Group I was given 0.2 mL corn oil for 15 days, group II was induced by benzo(α)pyren without taurin nor A. Muricata leaf extract for 10 days, group III was given 7.8 mg taurine/BW/day (twice a day) starting from the 15 th days before the induction of benzo(α)pyren, group IV, after induced with benzo(α)pyren, taurine was given with dosage of 7.8 mg/BW/day, group V, after induced with benzo(α)pyren, soursop leaf extract was given with amount of 277.8 mg/BW/day. Data analyzed by Kruskal-Wallis test and one way ANOVA with Fisher test (p>0.05). The results indicated that taurine had ability to recover the liver tissue induced by benzo(α)pyren as (carcinogenic) while, Annona muricata leaf extract had not shown any recover of tissue damage
Produksi Asam Levulinat dari Inulin Umbi Dahlia (Dahlia sp. L) Menggunakan Katalis Asam Klorida Murwindra, Rosa; Linggawati, Amilia; Yanti, Pepi Helza; Awaluddin, Amir; ', Saryono
Jurnal Natur Indonesia Vol 16, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (288.789 KB) | DOI: 10.31258/jnat.16.2.64-71

Abstract

Dahlia is a floriculture plant with tuber that rich of inulin. Inulin is soluble in hot water and it will settle on cool temperature in alcohol. Extraction of result from 100 g dahlia tuber taken from Bukittinggi, West Sumatra is 4% inulin (w/w dahlia tuber). Inulin flour produced is white gray. Qualitative tests with Seliwanoff and Nelson-Somogyi methods shows that inulin positive contained of fructose and reducing sugar. Extracted result of inulin can be converted into levulinic acid using acid catalyst at high temperature. In this experiment, production of levulinic acid will bundle with variate temperature, reaction time and catalyst concentration of hydrochloride acid. The reaction of inulin convertion was done in ampul that burned in oven. Conversion result of 5% inulin to be levulinic acid on heating 150 o C hydrochloride acid concentration 0,1 M about 25 minutes was 12,33% (w/w inulin). On heating 170 o C hydrochloride acid concentration 0,1 M about 15 minutes is 26,25% (w/w inulin), while on heating 150 o C hydrochloride acid concentration 1 M about 15 minutes is 32,28% (w/w inulin). Experiment result showed that concentration of glucose, levulinic acid and formiat acid increase with increasing in reaction reaction temperature while fructose concentration decrease from 55,14 mg/mL to be 0,12 mg/mL. The longer time reaction and the higher concentration of catalyst hydrochloride acid, the lower concentration of glucose and fructose and the larger concentration of levulinic acid and formic acid.
Pengaruh Penambahan Sargassum sp. dan Inositol dalam Pakan terhadap Pertumbuhan dan Daya Tahan Juvenil Ikan Gurami (Osphronemus gouramy Lac.) Lestari, Dwi; Widiastuti, E. L.; Nurcahyani, N.; Susanto, G. N.
Jurnal Natur Indonesia Vol 16, No 2 (2016)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (96.86 KB) | DOI: 10.31258/jnat.16.2.72-78

Abstract

Gourami (Osphronemus gouramy Lac.) as one of the freshwater fishes, are easily to be cultured but slow in growth rate. One of the ways to enhance their growth rate is by feeding them with high nutritious food. Sargassum sp. and inositol are known compound able to stimulate the growth of some fishes. The study was conducted to determine the effect of Sargassum sp and inositol on commercial feed to the growth rate and survival of juvenile gouramy. The study was conducted from January to April 2015 in Aquatic Laboratory of Biology Department - University of Lampung. Completely randomized designed was used with 4 treatment groups and 5 replications. Anova and Tukey at 5% levels were applied to this study. The result indicated that addition of inositol and Sargassum sp on commercial food significantly affected the gourami growth parameters such as the body weight, body length, body width as well as juvenile gouramy spesific growth rate and their survival rate.

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