Chemical Constituent and Insecticidal Activity of Essential Oil from Dried Unripe Citrus Reticulata
Student: Oluwadamilola Temitope Saka (Project, 2025)
Department of Chemistry
University of Ilorin, Kwara State
Abstract
Pulverized dried peels of Citrus reticulata (500g) were subjected to hydrodistillation for
four hours using a Clevenger-type apparatus. The resulting essential oil was analyzed
using Gas Chromatography-Mass Spectrometry (GC-MS), and its insecticidal properties
were evaluated through a contact toxicity bioassay against adult bean weevils
(Callosobruchus maculatus). The distillation process yielded 1.272% (w/w) of essential
oil. GC-MS analysis revealed that monoterpenoids constituted the major portion of the
oil, making up 99.6% of its composition. The dominant compounds identified D-
limonene (93.3%) and sabinene (2.1%). The oil demonstrated significant insecticidal
activity, causing mortality in the exposed insects. These findings suggest that the oil may
serve as a potential natural alternative to synthetic insecticides for controlling storage
pests.
Keywords
For the full publication, please contact the author directly at: damiayo64@gmail.com
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- UMA UKPAI SCHOOL OF THEOLOGY, UYO, AKWA IBOM STATE (AFFL TO UNIVERSITY OF UYO) 1
- Umaru Ali Shinkafi Polytechnic, Sokoto, Sokoto State 24
- Umaru Musa Yaradua University, Katsina, Katsina State 28
- Umca, Ilorin (Affiliated To University of Ibadan), Kwara State 1
- University of Abuja, Abuja, Fct 117
- University of Africa, Toru-Orua, Bayelsa State 4
- University of Benin, Benin City, Edo State 362
- University of Calabar Teaching Hospital School of Health Information Mgt. 1
- University of Calabar, Calabar, Cross River State 240
- University of Ibadan, Ibadan, Oyo State 14