Site did not influence the chemical composition. Lignin content was similar in sapwood and heartwood (28.1% and 28.6% of extractive-free wood respectively as well as the sugar composition. ethanol-soluble compounds corresponded to 65% of total extractives in heartwood and 43% in sapwood. The lipophilic extractible compounds were below 1%, and most of them were polar e.g. Heartwood had approximately two times more solvent extractible compounds than sapwood (on average 19.0% and 9.5%. Twenty trees from two sites in Portugal were analysed. Effects o.Ĭhemical characterization and extractives composition of heartwood and sapwood from Quercus faginea.ĭirectory of Open Access Journals (Sweden)įull Text Available Heartwood and sapwood of Quercus faginea were evaluated in relation to summative chemical composition and non-polar and polar extracts composition, including an assessment of antioxidant properties (DPPH and FRAP. Major chemical constituents were characterized by RPâ€HPLCâ€∍AD method and antioxidant capacity was determined by measuring colorimetrically the extent to scavenge ABTS radical cations. Seven culinary spices including black pepper, cayenne pepper, cinnamon, ginger, Mediterranean oregano, rosemary, and turmeric were extracted with boiling water. Li, ZhaopingĪbstract The objective of this study was to investigate prebiotic potential, chemical composition, and antioxidant capacity of spice extracts. Lee, Ruâ€Po Huang, Jianjun Henning, Susanne M. Prebiotic Potential and Chemical Composition of Seven Culinary Spice Extracts Chemical composition and bactericide properties of shungite water are studied [ru Arapov, O.V.Ĭhemical analysis of water extracts from shungite-3 of Zagozhino deposit (Karelia) and natural water contacting with shungite rocks are done. International Nuclear Information System (INIS)Ĭharykova, M.V. Chemical composition of water extracts from shungite and shungite water

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