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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
 1 
Search results for , issue "Vol 17, No 2 (2019)" : 5 Documents clear
Antioxydant Extract of Endophytic Fungi Fusarium oxysporum LBKURCC41 Marlinda, Sri; Teruna, Hilwan Yuda; Pratiwi, Nova Wahyu; Ardhi, Aulia; Saryono, Saryono
Jurnal Natur Indonesia Vol 17, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.485 KB) | DOI: 10.31258/jnat.17.2.1-9

Abstract

Fusarium oxysporum LBKURCC41 is one of endophyte fungi which is  able to produce secondary metabolites. The purpose of this research was to discover an antioxidant agent from F. oxysporum LBKURCC41extract that was fermented in Huang medium for 15 d with of corn and potato with particle size of 80 mesh as carbon sources. The ethyl acetate extract from the cultured medium showed four dominant component with retentiont time of 3.24, 3.44, 17.02 and 18.889 min. The F. oxysporum LBKURCC41 extract containing compounds with functional group O-H, C-H and C-O, and it had  a IC50 value of 435,157±12,009a.
Antioxidant and Antibacterial Activity of Plectaranthus amboinicus Leaf Extract Islami, Deri; Teruna, Hilwan Yuda; Eryanti, Yum
Jurnal Natur Indonesia Vol 17, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.735 KB) | DOI: 10.31258/jnat.17.2.10-15

Abstract

Plectranthus amboinicus (Lour.) is a perennial plant belonging to the family of Lamiaceae which have been widely used in traditional herbal medicine. In the present study, the extracts of the leaves of P. amboinicus that was extracted by different solvents were evaluated for their antioxidant and antibacterial properties. The fresh leaves of the plant were extracted using subsequent methanol, n-hexane and dichloromethane. The antioxidant activity was determined by DPPH free radical scavenging assay and the antimicrobial activity was tested against Escherichia coli and Staphylococcus aureus by agar well diffusion assay. The results of antioxidant activity test showed that dichloromethane extract of the leaves had the highest antioxidant activity among all with  IC50 value of 50.2 μg/mL Methanol and n-hexane extracts were still active in DPPH with IC50 value of 71.3 μg/mL and 205.9 μg/mL, respectively. Furthermore, the dichloromethane and methanol ektracts have shown a promising antibacterial activity in E. coli. The findings indicated that dichloromethane and methanol extracts of the leaves of P. amboinicus were potential further study as herbal medicine as they showed high antioxidant and antibacterial activities.
Synthesis, Characterization and Anti Mcf-7 Proliferative Acitivity of Flavonol Derivatives of 2'-Hydroxyacetophenon and 3,4,5-Dimethoxy Benzaldehid Rokim, Muhamad; Zamri, Adel; Teruna, Hilwan Yuda
Jurnal Natur Indonesia Vol 17, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (475.257 KB) | DOI: 10.31258/jnat.17.2.16-24

Abstract

Flavonols a derivatives of 2'-hydroxyacetophenon and 3,4,5-dimethoxy benzaldehid has been synthesized under basic condition (KOH). The structure of the compound was characterized based on the interpretation of spectroscopic data, including UV, FTIR, NMR and HRMS. Anticancer activity was evaluated using the MTS assay against MCF-7 cells, which showed that the flavonol 2'-hydroxycalone derivative was potentially active as an anticancer substance with IC50 values <1000 µg / mL.
Analysis of Infusion and Ethanol Extract of Tamarindus indica L, Scurrula Sp, Mimosa pudica D of Fresh and Dry as Amylase Enzyme Inhibitor Devi. Sy, Silvera; Nst, Musyirna Rahmah; Jannah, Ninuk Rodhiatul
Jurnal Natur Indonesia Vol 17, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.136 KB) | DOI: 10.31258/jnat.17.2.25-31

Abstract

α-amilase is one of digestive enzyme that hydrolize starch to maltose by α-glukosidase and degradation to form a glucose and continue with blood adsorption through villi of small intestine. Consomption of acarbose drug is one of ways for diabetic treatment to inhibit the activity of α-amilase. Tamarind leaves (Tamarindus indica L) herbal benalu api (Scurrula Sp) and herbal putri malu (Mimosa pudica D) regularly used as medical plant with activity of antidiabetic medicine. The aims of this studies was to analyze the potency of three medical plant with form of infusa and ethanol extract from fresh or dried plant to inhibit activity of α-amilase and akarbose used as positive control. Inhibition potency of sample against activity of α-amilase were determine base on maltose produced by of starch hydrolysis α-amilase to reduction dinitrosalicylic acid become 3-amino-5-nitrosalicylic acid and the absorbance were measured with spektrofotometer at 530 nm. Resulted of percentage inhibition against activity of α-amilase were herbal infusa from dried benalu api 85.58 ± 2,93%, infusa of fresh putri malu 87.40 ± 1,81%, and the dried 98,85 ± 0,66%. These results did not significancy different with inhibition of akarbose 93.89 + 0,02%. Infusa herbal of dried benalu api, fresh and dried putri malu were potential cover for acarbose to used as alternative medicine.
Sugarcane-Bagasse Trichokompos Optimalization using Trichoderma sp. (LBKURCC1 and LBKURCC2) and Pseudomonas szutzeri (LBKURCC54 dan LBKURCC59) Muslimah, Nur; Pato, Usman; Saryono, Saryono
Jurnal Natur Indonesia Vol 17, No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.661 KB) | DOI: 10.31258/jnat.17.2.32-42

Abstract

Sugarcane (Saccharum officinarum) is a plant that is widely used as raw material for making sugar and can be enjoyed directly by extracting the juice. While the pulp has not been utilized and is often disposed of as waste. This study aims to make compost using Trichoderma (LBKURCC1 and LBKURCC2) and Pseudomonas (LBKURCC54 and LBKURCC59) as bioactivators. The composting process is done by mixing bagasse and chicken manure with a ratio of 2: 1 and adding isolate fungus Trichoderma sp. and Pseudomonas stutzeri bacteria as activator with several combinations on compost media with 5 treatment. Compost treatment includes P0 (control), P1 (J1_J2_B1), P2 (J1_J2_B2), P3 (J1_B1_B2), P4 (J2_B1_B2) and P5 (J1_J2_B1), P3 (J1_J2_B1_B2). The process of composting bagasse is done in a poly bag. Analyzed of compost quality was determined based on parameters of temperature, water content and the levels of C/N ratio observed for 18 days. In this study, the use of Trichoderma (LBKURCC1 and LBKURCC2) and Pseudomonas (LBKURCC54 and LBKURCC59) as bioactivators in a mixture of compost material gave a significant difference to control at the C/N ratio with a value of P> 0.05. The highest C/N ratio is from P5 (28.43) and the lowest is from P2 (5.17).

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