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171.
Plant origin of Okinawan propolis: honeybee behavior observation and phytochemical analysis 总被引:1,自引:0,他引:1
Kumazawa S Nakamura J Murase M Miyagawa M Ahn MR Fukumoto S 《Die Naturwissenschaften》2008,95(8):781-786
Propolis is a natural resinous product collected by honeybees from certain plants. It has gained popularity as a food and
alternative medicine. Poplar and Baccharis are well known as the source plants of European and Brazilian propolis, respectively. However, the propolis from Okinawa,
Japan, contains some prenylflavonoids not seen in other regions such as Europe and Brazil, suggesting that the plant origin
of Okinawan propolis is a particular plant that grows in Okinawa. To identify the plant origin of Okinawan propolis, we observed
the behavior of honeybees as they collected material from plants and caulked it inside the hive. Honeybees scraped resinous
material from the surface of plant fruits of Macaranga tanarius and brought it back to their hive to use it as propolis. We collected samples of the plant and propolis, and compared their
constituents by high-performance liquid chromatography with a photo-diode array detector. We also compared their 1,1-diphenyl-2-picryl-hydrazyl
radical scavenging activity. The chemical constituents and biological activity of the ethanol extracts of the plant did not
differ from those of propolis. This indicates directly that the plant origin of Okinawan propolis is M. tanarius.
S. K. and J. N. contributed equally to this work. 相似文献
172.
Kondo Monami Sakamoto Yasuhide Kawabe Yoshishige Nakamura Kengo Watanabe Noriaki Komai Takeshi 《Environmental Modeling and Assessment》2022,27(2):251-273
Environmental Modeling & Assessment - This work developed a model for predicting the volatilization flux from the unsaturated soil contaminated by volatile chemical substances (VCSs) such as... 相似文献
173.
Nakao Keisuke Suto Hitoshi Hattori Yasuo Kikumoto Hideki 《Environmental Fluid Mechanics》2022,22(4):663-682
Environmental Fluid Mechanics - This study applies the models describing the effect of a neutrally stratified high-Reynolds-number boundary layer on peak wind estimation. A neutrally stratified... 相似文献