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Your search keyword '"Molide Rizal"' showing total 2 results
Start Over Author "Molide Rizal" Topic essential oil
2 results on '"Molide Rizal"'

1. Evaluation of citronella oil nanoemulsion formulation against the insect-stored pest Callosobruchus maculatus (Fab.) (Coleoptera: Bruchidae)

Author

Rohimatun, Mahindra Dewi Nur Aisyah, Rismayani, Molide Rizal, Rita Noveriza, and Tri Lestari Mardiningsih

Subjects
cymbopogon nardus, essential oil, oviposition deterrent, repellency, toxicity, Plant culture, SB1-1110
Abstract

Citronella (Cymbopogon nardus) produces essential oil and has the potential to be developed as a botanical insecticide. However, in its development, botanical insecticides encountered several obstacles. Utilizing nanotechnology in nanoemulsion preparations is one method to overcome these challenges. This research aimed to determine the contents of the citronella oil nanoemulsion (CiONano) and citronella oil non-nano emulsion (CiONonNano) formulations and evaluate the toxicity, repellency, and prevention of oviposition against female adults of Callosobruchus maculatus. This was the first work to evaluate the nanoemulsion of citronella oil prepared from spontaneous emulsification against C. maculatus. Chemical content testing used the GCMS method. A toxicity test using the contact method (LC50), used a probit program, while testing for repellency and oviposition deterrence was carried out using the no-choice method. The highest chemical component of CiONonNano and CiONano was citronella (37.56 and 38.97%, respectively), followed by citronellol (17.71 and 18.99%, consecutively) and geraniol (14.78 and 15.38%, respectively). In general, the CiONano formulation showed higher repellency and toxicity than CiONonNano. The LC50 values of CiONano were 10.03%. These values were 4.49 times lower than the LC50 of CiONonNano. However, the results of the oviposition inhibition test showed different results, the CiONonNano formulation had a higher oviposition inhibition capacity for adult female C. maculatus than CiONano. As a result, it is necessary to optimize the CiONano formulation to obtain consistent results in controlling C. maculatus.

Published
2024
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2. Preliminary study of insecticidal effect of citronella grass essential oil (Cymbopogon nardus) against post harvest pest Sitophilus oryzae

Author

Molide Rizal, Paramita Maris, and Agus Kardinan

Subjects
Toxicology, biology, law, Sitophilus, food and beverages, Cymbopogon nardus, PEST analysis, biology.organism_classification, Essential oil, law.invention
Abstract

Sitophilus oryzae is one of major postharvest pest in rice. It damaged the grain quantitatively and qualitatively (decreasing the product hygiene and causing the residue of its excretion). The research used natural insecticide comprise citronella grass which is a promising botanical insecticide to be used for controlling postharvest pest. This research has been conducted in the laboratory of Entomology, Indonesian Spice and Medicinal Crops Research Institute (ISMECRI) in January to March 2020. Citronella grass was distilled to obtain its essential oil containing 39% of citronella and 86% of geraniol. The research consisted of three methods, i.e. (a) repellent, designed by Completely Randomized Design, 5 treatments (concentration at 10%; 7.5%; 5%; 2.5%; and 1.25%), and 5 replications; and toxicity by using probit analysis applied by (b) contact; and (c) residue. The result revealed the oil may repel 33% at concentration of 10%, followed by concentration of 7.5%; 5% and 2.5% may repel as much as 24.6%; 20.4% and 10.8% consecutively. The LC50 of contact and residue toxicity are 23.2% and 1.71%. Applied by residual is more toxic than by contact. This showed that citronella grass essential oil has good prospect as natural insecticide to control S. oryzae, therefore the research need to be elaborated.

Published
2021
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