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The Journal of Experimental Life Sciences (JELS)
Published by Universitas Brawijaya
ISSN : 20872852     EISSN : 23381655     DOI : 10.21776/ub.jels
Core Subject : Health, Science,
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience
The Journal of Experimental Life Science (JELS) is a scientific journal published by Postgraduate School, University of Brawijaya as distribution media of Indonesian researcher’s results in life science to the wider community. JELS is published in every four months. JELS published scientific papers in review, short report, and articles in Life Sciences especially biology, biotechnology, nanobiology, molecular biology, botany, microbiology, genetics, neuroscience, pharmacology, toxicology, and Applied Life Science including fermentation technology, food science, immunotherapy, proteomics and other fields related to life matter. JELS is a scientific journal that published compatible qualified articles to the academic standard, scientific and all articles reviewed by the expert in their field. The Journal of Experimental Life Science (JELS) have a vision to become qualified reference media to publish the best and original research results and become the foundation of science development through invention and innovation on cellular, molecular, nanobiology, and simulation work related to life matter rapidly to the community. The Journal of Experimental Life Science (JELS) has objectives to published qualified articles on research’s results of Indonesian researchers in life science scope. JELS encompasses articles which discuss basic principles on natural phenomenon with cellular, molecular, and nanobiology approach.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 4 No. 2 (2014)" : 5 Documents clear
Effect of Reducing Sugar and Total Nitrogen to Ethanol Production from Molasses by Saccharomyces cerevisiae Ekwan Nofa Wiratno; Tri Ardyati; Agustin Krisna Wardani
The Journal of Experimental Life Science Vol. 4 No. 2 (2014)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1123.739 KB) | DOI: 10.21776/ub.jels.2014.004.02.05

Abstract

Indonesia's oil production has declined, while demand for derivative products is increasing. Objective of this research are to understand effect of reducing sugar and total nitrogen variation to ethanol production and fermentation efficiency, cell viability, acidity, temperature, dissolved oxygen with molasses by Saccharomyces cerevisiae (SAF Instant). Step of this research consist of determination of reducing sugar, ethanol fermentation, total nitrogen determination, ethanol determination and data analysis. Treatment of reducing sugar (GR) and total nitrogen (N) (g.L-1) that are GR 100 N 0, GR 100 N 6, GR 100 N 10, GR 125 N 0, GR 125 N 6 and GR 125 N 10. Fermentation was carried out for 72 hours with three replications. Observation parameters every 24 hours are ethanol and reducing sugar concentration, temperature, acidity and dissolved oxygen. Highest ethanol resulted from GR 125 N 6 (3.68 g.L-1) and GR 100 N 6 (3.53 g.L-1). Low reducing sugar consumption inhibited by by-product of yeast metabolism and molasses chemical compound, lead leaves high sugar concentration (> 80 g.L-1). GR 100 N 6 and GR 125 N 6 have highest fermentation efficiency (69 and 57 %). There was no increase in temperature and decrease in pH significantly (α>0.05). Dissolved oxygen decreased significantly (α>0.05) at the early of fermentation and decrease until the end of fermentation. Total nitrogen 6 g g.L-1 has the highest fermentation efficiency. Keywords: ethanol, molasses, reducing sugar, Saccharomyces cerevisiae, total nitrogen
Bioactivity of Purple Yam Tuber (Dioscorea alata L.) on the Level of CD8+and CD8+CD462L+ T cells and Histology of Liver in BALB/c Mice Model of Digestive Allergy Yuyun Ika Christina; Muhaimin Rifa'i
The Journal of Experimental Life Science Vol. 4 No. 2 (2014)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1439.519 KB) | DOI: 10.21776/ub.jels.2014.004.02.01

Abstract

Purple yam tuber (Dioscorea alata L.) is a family of Dioscoreaceae containing diosgenin which is known as immunomodulatory agent. This study aimed to understand the quantitative changes of naïve and activated memory of T cells on mice model of digestive allergy after orally treated with ethanol extract of purple yam tuber. In this experiment, architecture of hepar histopathology is also observed. Ethanol extract of purple yam tuber with three doses of 0.167 g/kg bw (U1), 2.008 g/kg bw (U2), and 10.039 g/kg bw (U3) are applied. Data were analyzed using One-way ANOVA (p <0.05) and Tukey test using SPSS 16.0 for Windows. Ethanol extract of purple yam tuber triggers the immunocompetent activity of T cells in mice model of digestive allergy. The result showed that the number of memory type T cells in mice model of digestive allergy decreased in lower dose (0.167 g/kg bw (U1). However, the number of naïve T cells, CD8+CD62L+ in mice with digestive allergy after administration of purple yam tuber ethanol extract increased significantly in lower dose (0.167 g/kg bw (U1) compared with positive control (OVA). Dose variations of extract ethanol of purple yam tuber (0.167 g/kg bw) has a significantly effect to shift the T cell status from memory to naïve. Keywords: Digestive allergy, Dioscorea alata L., histopathology, immunomodulatory, subset T cells
Adaptive Immune Response Stimulation on Nephrolithiasis Mice Model after Treatment of Tempuyung (Sonchus arvensis L.) Leaf Extract Khoirin Maghfiroh; Muhaimin Rifa'i; Sri Widyarti
The Journal of Experimental Life Science Vol. 4 No. 2 (2014)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (890.837 KB) | DOI: 10.21776/ub.jels.2014.004.02.02

Abstract

Calcium crystal accumulation on kidney can cause kidney stone (nephrolithiasis). The oxalate calcium crystal which is deposite on the kidney can trigger inflammation on the epithelial that is able to induce cells death (necrosis). The necrosis is able to cause inflammation and it will affect the body's immune system. Infection agent that comes to the body will be responded by the innate immunity which will be responded later by adaptive immunity. One of herbal agent that is expected to be used to stimulate adaptive immunity response is Tempuyung (Sonchus arvensis) leaf extract. The aim of this study is to find out the change of relative amount of CD4+ T cells, CD8+ T cells, and B (B220) cells on nephrolithiasis mice model after S.arvensis leaf extract. The mice are divided into six groups; control group, placebo, nephrolithiasis, S.arvensis leaf extract for 7 days, nephrolithiasis then it is continued with S.arvensis leaf extract for 7 days, and simultaneous (nephrolithiasis and S.arvensis leaf extract for 3 months). The amount of relative T lymphocyte cells is measured by using BD FACSCalibur FlowcytometerTM. The data is analyzed by using ANOVA one way (p<0.05) using SPSS 16.0 software for Windows. The result shows that there are changes of relative CD4+ T cells, CD8+ T cells, and B (B220) cells on nephrolithiasis mice model after the giving of S.arvensis leaf extract. The treatment of S.arvensis leaf extract on the nephrolithiasis mice model can stimulate the homeostatic activity by suppressing the B cells. Compound of S.arvensis leaf extract that can inhibit of Th1 cells and the increase of Th2 cells by proliferation cells activity. The treatment of S.arvensis leaf extract for 7 days can suppress CD4+. The S.arvensis leaf extract can stimulate adaptive immune response which is caused by immunomodulatory active component.Keywords: Nephrolithiasis, Sonchus arvensis L., leaf extract, adaptive immune response.
Bioactivity of Ethanolic Extract of Propolis (EEP) in Balb/C Mice's CD4+CD25+ and B220+ Lymphocyte Cells Aisyah Zahroh Aden; Muhaimin Rifa'i
The Journal of Experimental Life Science Vol. 4 No. 2 (2014)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1207.211 KB) | DOI: 10.21776/ub.jels.2014.004.02.03

Abstract

This experiment was aimed to determine the bioactivity of ethanolic extract of propolis (EEP) against the changes in the quantity of CD4+CD25+ and B220+ lymphocytes and determine the optimal dose of EEP to increase the number of CD4+CD25+ and B220+ cells in Balb/c mice. Balb/c mice were divided into four treatment groups: control treatment, treatments of EEP at a dose of 50 mg.kg-1, 100 mg.kg-1, and 200 mg.kg-1 body weight of mice. All mice were dissected after two weeks post treatment. Profiles of lymphocytes from the spleen expressing CD4+CD25+ and B220+ cells were analyzed by flowcytometry using CellQuest software. Data was analyzed by Kruskall Wallis and Mann Whitney statistical test with P<0.05 using SPSS 16.0 for Windows. The results showed that the treatment of dose of 50 mg.kg-1 of EEP can increase relative number of CD4+CD25+ cells significantly, but those cells decrease significantly when we apply the dose of 100 and 200 mg.kg-1. The relative number of B220+ cells increase in the dose of 50 and 200 mg.kg-1 and decrease in the dose of 100 mg.kg-1 compared to the control. This experiment suggest that EEP has bioactivity to modulate the quantity of CD4+CD25+ and B220+ in dependent manner.Keywords: B220+, CD4+CD25+, lymphocyte, propolis
Dried Skeletonema costatum in Feed Formulation for the Growth of Vaname Shrimp (Litopenaeus vannamei) Dewi Putri Lestari; Arning W. Ekawati; Maftuch Maftuch
The Journal of Experimental Life Science Vol. 4 No. 2 (2014)
Publisher : Postgraduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (914.365 KB) | DOI: 10.21776/ub.jels.2014.004.02.04

Abstract

The aim of this study was to determine the effect and the best dosage used by the Skeletonema costatum in feed formulation on the growth of Vaname shrimp. This experiment used Completely Randomized Design (CRD) with four treatments and three replications. Treatment was given by using dried S. costatum in feed formula (iso protein 37% and iso energy 3.6 kkal/g feed). Feed treatment was the substitution of fish meal protein A = 0%, B = 2.5%, C = 5% and D = 7.5% with dried S. costatum protein. The observed parameters include Survival Rate (SR), Survival Growth Rate (SGR), Feed Efficiency Ratio (FER), and Protein Efficiency Ratio (PER). The results showed that the use of dried S. costatum in feeding are effective in increasing the specific growth rate, feed efficiency ratio and the ratio of protein efficiency than controls. The best dosage in feeding formula is ranged from 4.39% to 4.75%.Keywords: feeding formula, Skeletonema costatum, Vaname Shrimp

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