tailieunhanh - Phytochemical constituents and antioxidant, antimicrobial and tyrosinase inhibitory activities of Pandanus tectorius extracts

This study aims to evaluate phytochemical constituents and antioxidant, antimicrobial, tyrosinase inhibitory activities and sunscreen function of various extracts from Pandanus tectorius. | extracts allowed the identification of various compounds. The dominant compounds are terpenoids, revealed by pink and purple bands under white light, chrolophylls as green bands and flavonoids as yellow and orange bands (data not shown). UV detection at 365 nm demonstrated the difference in phytochemical composition of stem bark, leaf and fruit extracts. Red bands were dominant in leaf extracts, correlating to leaf pigment components. Light and dark blue bands appeared in all extracts especially in ethyl acetate fractions of stem barks and fruits, indicating the presence of phenolic compounds. There were some blue fluorescence bands defined as phenol carboxylic compounds. The purple band in the ethyl acetate fraction of leaves represented terpenoids. However, yellow or orange bands were not detectable under 365 nm. As shown in the figure, the ethyl acetate fractions had the highest number of bands as compared to other fractions, which requires further characterization. Various compounds such as triterpenes, steroids and various phenolic and flavonoid compounds have been isolated from