Toxicity of Malaysian Medicinal Plant Extracts Against Sitophilus oryzae and Rhyzopertha dominica

Arshia Hematpoor and Sook Yee Liew and Hasmahzaiti Omar and Jamil Ahmad Shilpi and Azeana Zahari and Devi Rosmy Syamsir and Haslinda Mohd Salleh and Norsita Tohar and Rosalind Pei Theng Kim and Ahmad Kaleem Qureshi and Ayu Afiqah Nasrullah and Gomathi Chan and Soon Huat Tiong and Omer Abdalla Ahmed Hamdi and Muhammad Remy Othman and Sow Tein Leong and Khalijah Awang and Masdah Mawi and Norhayu Asib (2022) Toxicity of Malaysian Medicinal Plant Extracts Against Sitophilus oryzae and Rhyzopertha dominica. Pertanika Journal of Social Sciences and Humanities, 45. pp. 1137-1160. ISSN 0128-7702 (P-ISSN) , 2231-8534 (E-ISSN)

[img] Text

Download (42kB)
[img] Text
Full text.pdf
Restricted to Registered users only

Download (542kB)


The insecticidal activities of extracts from 22 Malaysian medicinal plant extracts from 8 botanical families were tested against rice weevil: Sitophilus oryzae (L.) and lesser grain borer: Rhyzopertha dominica (F.). The extracts were obtained using hexane, methanol, and dichloromethane to extract potential biopesticides from dried leaves. The toxicity levels were examined periodically based on antifeedant activity and contact toxicity assays using treated grain assay. Hexane extracts of Alpinia conchigera, Alpinia scabra, Curcuma mangga, Curcuma purpurascens, Goniothalamus tapisoides, Piper sarmentosum , and methanol extracts of Curcuma aeruginosa, C. mangga , and Mitragyna speciosa were the most potent extracts against S. oryzae and R. dominica with lethal concentration (LC50) values of ≤ 0.42 mg/mL and ≤ 0.49 mg/mL, respectively. The contact toxicity test results showed that methanol extracts of C. aeruginosa and C. mangga , dichloromethane extracts of Cryptocarya nigra , and hexane extracts of C. mangga, and C. purpurascens resulted in 100% mortality of both pests within 28 days exposure of 5 mg/cm2 concentration.

Item Type: Article
Keyword: Antifeedant , Insecticidal activity , Lesser grain borer , Malaysian medicinal plant , Rice weevil
Subjects: Q Science > QK Botany > QK1-989 Botany > QK1-474.5 General Including geographical distribution
R Medicine > RM Therapeutics. Pharmacology > RM1-950 Therapeutics. Pharmacology > RM300-666 Drugs and their actions
Department: CENTRE > Preparation Centre for Science and Technology
Date Deposited: 30 Nov 2022 08:03
Last Modified: 30 Nov 2022 08:03

Actions (login required)

View Item View Item