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Bioactive Prenylated Flavonoids from the Stem Bark of Artocarpus kemando
Seo, Eun-Kyoung,Lee, Dong-Ho,Shin, Young-Geun,Chai, Hee-Byung,Navarro, Hernan-A.,Kardono, Leonardus B.S.,Wani, Mansukh, C.,Rahman, Ismail,Cordell, Geoffrey-A.,Farnsworth, Narman-R.,Pezzuto, John-M.,Ki The Pharmaceutical Society of Korea 2003 Archives of Pharmacal Research Vol.26 No.2
Four known prenylated flavonoids, artonins E (1) and O (2), artobiloxanthone (3), and cycloartobiloxanthone (4), were isolated from the stem bark of Artocarpus kemando by bioassayguided fractionation using the DNA strand-scission and the KB cytotoxicity assays as monitors. Compounds 1 and 3 exhibited strong DNA strand-scission activity, and all four compounds were found to be cytotoxic.
Absorption of CO2byMicroalgaeandItsConversiontoGreenDieselFuel
( Rahmania Admirasari ),( Zeily Nurrachman ),( Agusrifai ),( Sabaruddin W T Jokrokusumo ),( Arif Dwi Santoso ),( Akira Lusia ),( Listyani Purwitasari ),( Diyono ),( Kardono ) 경남대학교 신소재연구소 2012 신소재연구 Vol.24 No.-
Microalgae, microscopic organisms growing on water habitation actually contain chemical structures that can be utilized as a bio-fuel (bio-diesel). These types of plants are considered to be a potential candidate for green and renewable energy resources. Microalgae are also considered having characteristics of carbon neutral due to the high ability to absorb green house gas of carbon dioxide (CO2) during their photosynthesis. Moreover, microalgae cause no land use conflict unlike other bio-fuels based food plants. This paper presents the experimental results of biologically CO2 uptake by cultured microalgae through a pilot scale of an integrated photo-bioreactor (PBR). Besides, micro-algal biomass conversion into biodiesel fuel is also presented in this paper. Micro-algal PBR employed was a Single Tubular Airlift Photo-bioreactor (STAP) type developed by the Environmental Technology Center, Agency for the Assessment and Application of Technology (PTL-BPPT) with a volume of 40 liters. During a 10 day experiment, a 40 L- STAP could absorb 23 grams of CO2per day and produce 147.5 grams of wet basis or 29.5 grams of dry basis of micro-algal biomass. Thus, the CO2 uptake capacity by microalgae in this experiment was about 0.78 grams of CO2 per gram of dry micro-algal biomass. This micro-algal biomass was then converted to biodiesel oil through a process of extraction and trans-esterification which produced about 27 ml of oil. Uptake capacity of CO2by microalgae through STAP and ratio of micro-algal biomass conversion to biodiesel from this experiment were considered to be relatively low however the integrated processes consisting of the CO2 uptake by microalgae, micro-algal biomass harvesting technique and micro-algal biomass conversion to biodiesel have indicated a good system and therefore it is quite promising to be developed to a larger scale.
Seo, Eun-Kyoung,Kim, Nam-Cheol,Wani, Mansukh C.,Wall, Monroe E.,Navarro, Herna'n A.,Burgess, Jason P.,Kazuko, Kawanishi,Kardono, Leonardus B.S.,Riswan, Soedarsono,Rose, William C.,Fairchild, Craig R. 梨花女子大學校 藥學硏究所 2002 藥學硏究論文集 Vol.- No.11
Six new xanthones, cratoxyarborenones A-F (1-6), were isolated from the leaves, twigs, and/or stembark of Cratosylum sumatranum along with the known compound, vismione B (9), as active constituentsby tioasbay-directed fraetionation using the KB human cancer cell line Wtotoxicity assay. In addition,two novel anthraquinobenzophenones, cratoxyarborequinones A (7) and B (8), and two Imown compounds,2,4,0-trihydroxybenzophenone 4-O-geranyl ether and δ-tocotrienol, were obtained as inactive constituents.