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目前显示的是标签为“GC-MS”的博文

Phenolic Acids from Parthenium hysterophorus: Evaluation of Bioconversion Potential as Free Radical Scavengers and Anticancer Agents

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53115#.VLXKmcnQrzE Author(s)   Richa Panwar 1* , Asvene Kumar Sharma 1 , Dharm Dutt 2 , Vikas Pruthi 1   Affiliation(s) 1 Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India . 2 Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee, India . ABSTRACT Parthenium hysterophorus is a globally recognized invasive alien weed that prominently colonizes grazing areas and cultivated lands causing adverse effect on crop production. Major allelochemicals released from parthenium include sesqueterpene lactones and phenolic acids. Among these the presence of caffeic, vanillic and ferulic acids is of industrial significance as they possess potent free radical scavenging and anticancer activities. This study reports for the first time, high total phenolic acid content (20.82 ± 0.82 mg GAE/g dry sample) in parth...

Effect of Different Cover Cultivations in Later Summer on Aroma Constituents of Autumn Tea (Camellia sinensis L.)

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50953#.VFCGuFfHRK0 Author(s) Min Liu 1* , Fucan Xie 1* , Renrong Cao 2 , Xiaohua Qi 1 , Xuehao Chen 1* Affiliation(s) 1 School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China . 2 Tea Research Institute of Jiangsu Province, Jurong, China . ABSTRACT Tea plants grown under sunshade net and greenhouse are new methods for coping with high- temperature stress in later summer in middle and south China. Aroma is one of the most important flavors and qualities of tea. In this research the cultivar “Longjing-changye” (LJCY) was grown under sunshade net, greenhouse and open field as treatments to study the change...

UV Photocatalytic Degradation of Commercial Naphthenic Acid Using TiO2-Zeolite Composites

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50245#.VDNHUlfHRK0 Author(s)   Kennedy K. Kalebaila , Craig Fairbridge Affiliation(s) Natural Resources Canada, CanmetENERGY, Devon, Canada . ABSTRACT The presence of naphthenic acids in oil sand products and process streams is the cause of toxicity to aquatic life and corrosion. The removal of organic acids from tailings pond water reduces the negative impact on marine life. The ultra-violet (UV) photocatalytic reduction of commercial naphthenic acid in water using TiO 2 -zeolitecomposites showed a significant decrease in the concentration of naphthenic acid, accompanied by an increase in carbon dioxide formation; the presence of carbon dioxide signifies degradati...