Nouwaratn SukhapanthYupa RongsriyamSuchart UpathamPairote PrempreeSomkid Kaewmanee2025-02-032025-02-03199220251992Thesis (M.Sc. (Environmental Biology))--Mahidol University, 1992https://repository.li.mahidol.ac.th/handle/20.500.14594/103406Environmental Biology (Mahidol University 1992)Selected medicinal plants having repellent activity were tested against the larval stages and adults of mosquitoes, namely, Aedes aegypti Linn. and Culex quinquefasciatus Say. Ethanol crude extracts of the stems, branches, leaves, flowers, fruits and roots of Cymbopogon nardus Rendle, Citrus hystrix DC., Chrysanthemum indicum Linn., Azadirachta indica var. siamensis Valeton, Ocimum sanctum Linn., Alpinia galanga Swaztz and Acorus calamus Linn. containing various components of repellent substances were used. The single and mixed solutions of two species of plant crude extracts were mixed with olive oil and musk in the ratio of 20: 2: 0.1, respectively. The 0.5 ml of the mixed repellent solutions were applied on the ventral forearms of some volunteers to assess potential repellent efficacy and duration. The results indicated that the single solution of C. nardus extract and the mixed solution of C. nardus and C. indicum extract showed repellent activities for 120 minutes. These extracts also showed larvicidal activities against the afore-mentioned mosquitoesvii, 65 leaves : ill. (some col.)application/pdfengผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้าMosquitoesMedicine, HerbalPlants, MedicinalMaster ThesisMahidol University