The semivolatile composition of stem-bark of 10 Cinnamomum species, collected from China and Myanmar, were obtained by extraction with diethyl ether and analyzed by GC-FID and GC-MS. Identification of the substances was made by comparison of standards, mass spectra, and retention indices with literature records. Total of 74 compounds were identified. All data were statistically processed with principal component analysis and cluster analysis. Cinnamaldehyde and alpha-cubebene were found as the common constituent of the investigated population. Except Cinnamomum multiflorum, volatile terpenoids were the main constituents of all taxa. Major constituent of C. multiflorum was phenylpropanoid. Cluster subset gave the information that chemical components variation was influenced by geographical sources. Here, the first information on the semivolatile composition of six never investigated species viz. C. multiflorum, C. obtusifolium, C. inunctum, C. chartophyllum, C. pathenoxylon, and C. glanduliferum. Furthermore, those species could be alternative source of bioactive compounds.
Non-timber forest products were studied by interviewing the informants during the survey trip to the Tanintharyi Nature Reserve located in Dawei Township and Yephyu Township, Tanintharyi Region, Myanmar. The land area of the reserve forest is 1700 km2. Bioprospecting of non-timber forest products focusing on rural area development and systematic utilization of natural resources for sustainable development are popular nowadays. The extraction of economically important natural resources, leaving the forest structurally and functionally intact, has derived as an advanced strategy. The present study is the information of non-timber forest resources of Tanintharyi Nature Reserve located in the southern part of Myanmar, conducted from December 2017 to August 2018 by interviewing the informants of botanical folk knowledge. Totally 55 families, 113 genera, and 143 species were recorded as herbal medicines used locally by Dawei and Myeik (ancient Bamar) ethnic groups. This result will be helpful for the systematic search of biochemical and genetic information to develop commercially valuable products for pharmaceutical and cosmetics.
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