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Anti Head Lice

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Anti Head Lice
S OUTHEAST ASIAN J T ROP MED P UBLIC H EALTH

ANTI-HEAD LICE EFFECT OF ANNONA SQUAMOSA SEEDS
Junya Intaranongpai 1, Warinthorn Chavasiri 2 and Wandee Gritsanapan 1
1 Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok; Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand

2

Abstract. The present study focused on the separation and identification of the active compounds against head lice from the hexane extract of Annona squamosa L seed. Chromatographic and spectroscopic techniques revealed that two major compounds of the hexane seed extract were oleic acid and triglyceride with one oleate ester. The yields of these compounds were 13.25% and 7.74% dry weight, respectively. The compounds were tested in vitro against head lice, comparing to the crude hexane extract of the seed. The triglyceride with one oleate ester and the crude hexane extract diluted with coconut oil 1:1. These compounds were found to kill all tested head lice in 49, 11 and 30 minutes, respectively. The triglyceride ester can be used as a marker for quantitative analysis of the active compound for quality control of the raw material A. squamosa seed and its extract. This first finding will be useful for quality assessment and the chemical stability of the antihead lice preparation from this plant.

INTRODUCTION
Annona squamosa L. (Custard apple) is a plant belonging to the family Annonaceae. It is popularly cultivated in all parts of Thailand, especially in the northeast, as a sweet fruit. The seed of this plant is well known for killing head lice in many countries (Boonyaprapasara, 1998). The human head louse (Pediculus humanus capitis) is a small insect causing a public health problem, especially in poor sanitary conditions. In Thailand, research has shown the anti-head lice activity of A. squamosa. Puapatanakul (1980) reported that the extract of custard apple seeds in coconut oil at the ratio of 1:2 can kill 98% of head



References: Aldrich Chemical Co, Inc. The Aldrich Library of 13C and 1H FT NMR Spectra. 1st ed, 1993. Boonyaprapasara N, Chokchaicharoenporn O, eds. Samunprai Maipuenbaan. Vol. 2. Bangkok: Faculty of Pharmacy, Mahidol University, 1998: 454 (in Thai). Gritsanapan W, Somanabandhu A, Titirungruang C, Lertchaiporn M. A study on the antiparasitic activities and chemical constituents of extracts from the leaves and seeds of custard apple (Annona squamosa Linn.). Proceedings of Third NRCT- JSPS Joint Seminar, 1996: 209-15. McCage CM, Ward SM, Paling CA, Fisher DA, Flynn PJ, McLaughlin. Development of a paw paw herbal shampoo for the removal of head lice. Phytomedicine 2002; 9: 743-8. Puapatanakul O. Clinical studies of Annona squamosa seeds and leaves for the treatment of head lice. 1980: 37 pp (in Thai). T iangda C, Gritsanapan W, Sookvanichsilp N, Limchalearn A. Antihead-lice activity of Annona squamosa seed extract. Southeast Asian Journal of Tropical Medicine and Public Health 2000;31 (suppl 1): 174-7. Vol 37 No. 3 May 2006 535

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