Free radical scavenging activity, tyrosinase inhibition activity and fatty acids compositions of the native Thai silkworm pupae (Bombyx mori l.) oils
2010
Supanida Winitchai(Kasetsart University, Bangkok (Thailand). Kasetsart Agricultural and Agro-Industrial Product Improvement Institute) E-mail:[email protected] | Aranya Manosroi(Chiang Mai University, Chiang Mai (Thailand). Faculty of Pharmacy) | Jiradej Manosroi(Chiang Mai University, Chiang Mai (Thailand). Faculty of Pharmacy) | Korawinwich Boonpisuttinant(Chiang Mai University, Chiang Mai (Thailand). Faculty of Pharmacy)
Oils percentages from 5 native Thai silk worm pupae varieties which were Keawsakol, Nangnoi Si Sa Ket, Sumrong, Nangleung and Noneruesee were studied. The yields of oils from the soxhlet and maceration methods were 24-29 percent and 5-7 percent. Oils extracted from Noneruesee by the maceration method gave the highest free radical scavenging activity than other oil samples, but only oils from Noneruesee extracted by the soxlet method, and Nangleung, Somrong and Noneruesee extracted by the maceration method showed this activity. Oils extracted by the soxhlet extraction from Noneruesee gave the highest tyrosinase inhibition activity, but lower than that of the standard vitamin C and kojic acid. The silkworm pupae oil obtained from Soxhlet extraction had unsaturated fatty acids content in range of 72-79 percent, alpha-linolenic acid content in range of 32-44 percent, whereas that obtained from maceration extraction had unsaturated fatty acids content in range of 75-80 percent, alpha-linolenic acid content in range of 40-46 percent. The study indicated that the native Thai silkworm pupa oil could be used as an alternative in antiaging and whitening cosmetic products.
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