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81.
Muccillo-Baisch AL Mirlean N Carrazzoni D Soares MC Goulart GP Baisch P 《Environmental geochemistry and health》2012,34(1):43-53
Rio Grande, the southernmost Brazilian port and industrial center, is marked by mercury-polluted ground cover. This pollution
varies spatially, with levels exceeding 1,000 μg kg−1 in 30% of the urban territory. The risk of Hg impact as a result of deliberate and involuntary geophagy is increased by restrained
urban conditions in combination with the large proportion of the population living at low-income levels. Laboratory tests
have demonstrated that ingestion of Hg-polluted soil by rats results in significant alterations in animal health such as stagnation
in body weight increase, and significant mercury accumulation in the liver and kidney. The consumption of Hg-contaminated
urban soil also provoked changes in hematological profiles of experimental animals by increasing the number of platelets.
The present study indicates the potential for the local population of Rio Grande living in mercury-polluted districts, specifically
young children, to experience health disturbances. 相似文献
82.
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
83.
Mukherjee Arkadeep Ahn Young-Ho 《Environmental science and pollution research international》2022,29(23):34500-34514
Environmental Science and Pollution Research - The present study reports for the first time, a novel disinfection method that combines ultrasonication with a natural biocide terpinolene to inhibit... 相似文献