Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences
Silvi Ikawati
Department of plant protection, Faculty of Agriculture, University of Brawijaya
Agriculture, Biological Sciences & Forestry Environmental Science

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Bioactivity of Citrus hystrix D.C. Leaf Extract Against Cigarette Beetle Lasioderma serricorne (F.) Silvi Ikawati; Moh. Syamsu Dhuha; Toto Himawan
Journal of Tropical Life Science Vol. 7 No. 3 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.03.01

Abstract

The major control of pest stored Lasioderma serricorne for using synthetic pesticides, look like phosphine. Although quite effective, synthetic pesticides have a negative effect on the environment, such as pest re-sistance, deadly natural enemies, residues that are harmful to the environment and human health. The use of botanical pesticides as an alternative control be the focus this study. Botanical pesticides are selective to the target, safe for non-target insects and the environment. This research studies the repellent and fumigant activi-ty of the leaf extract of Citrus hystrix against all L. serricorne life stage. The results of GC-MS analysis of leaf crude extracts of C. hystrix with N-hexane solvent showed the highest percentage in the citronellal compound (86.43%). C. hystrix leaf extract showed stronger fumigant against pupae and eggs, compared adults, and larvae. The toxicity of the leaf extract of C. hystrix increased with increasing concentration. At a concentration of 60 ppm, fumigant activity showed the toxicity of 98.75% (pupae), 93.75% (eggs), 86.25% (adults) and 76.25% (larvae). Sequentially the LC50 value of fumigant activity from the highest to the lowest as follows; larvae 47.56 ppm, adults 43.42 ppm, eggs 31.61 and pupae 29.63 ppm. Extract of leaves of C. hystrix, have character repellent against L. serricorne. At a concentration of 60 ppm the IR value of 66% including repellent class IV, which means strong repellent level. Based on the results of the research, extracts of leaves of C. hystrix has a fumigant activity and repellent for controlling L. serricorne.
In Silico Study of Eugenol and trans-Caryophyllene also Clove Oil Fumigant Toxicity on Tribolium castaneum: In Silico Study and Fumigant Toxicity of Clove Oil Silvi Ikawati; Toto Himawan; Abdul Latief Abadi; Hagus Tarno; Alvan Fajarudin
Journal of Tropical Life Science Vol. 12 No. 3 (2022)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.12.03.07

Abstract

Alternative storage pest control that is more environmentally friendly than the use of synthetic chemical pesticides is to use botanical pesticides from plant essential oils, including clove (Syzygium aromaticum) which contains the main compounds eugenol and trans-caryophyllene. To study the various mechanisms of action of essential oils as botanical insecticides could use in silico approach through molecular docking. This study aims to predict the dominant binding mode(s) of a ligand with a protein of a known three-dimensional structure through docking. Then tested its fumigant activity on Tribolium castaneum. The docking results showed that the trans-caryophyllene and eugenol compounds had a more stable bond strength in the acetylcholinesterase enzyme T. castaneum than the control compound linalool. In addition, there is a synergy between eugenol and trans-caryophyllene when the two compounds interact with acetylcholinesterase. These results can be used as prediction material that trans-caryophyllene and eugenol have potential as protein acetylcholinesterase inhibitors of T. castaneum. After being tested in the laboratory, clove oil which contains two main compounds namely eugenol and trans-caryophylene has the potential to control T. castaneum with an LC50 value of 5,227 μL/L air. Keywords: Botanical insecticide, Caryophyllene, Docking, Eugenol, Fumigant,Syzygium aromaticum
Co-Authors Abdul Latief Abadi Alvan Fajarudin Hagus Tarno Moh. Syamsu Dhuha Toto Himawan Toto Himawan