title: Beta-cyclodextrin and its derivatives-enhanced solubility and biodegradation of 2-nitrobiphenyl.
abstract: This paper investigated the effects of beta-cyclodextrins (beta-CD) and its two derivatives, hydroxypropyl-beta-cyclodextrin (HPCD) and carboxymethyl-beta-cyclodextrin (CMCD), on the solubility and biodegradation of 2-nitrophenyl by an Acinetbacter sp. Results showed that beta-CD, HPCD and CMCD could not be utilized by Acinetbacter sp. as sole carbon source and none of the CDs had toxic effects on the growth of the bacteria in the experiments; all the CDs could enhance the apparent solubility and accelerate the biodegradation of 2-nitrobipheny. It showed that biodegradation-accelerating effects of CDs on 2-nitrobiphenyl were correlated with their solubility-enhancing effects. Among three CDs investigated, CMCD had the most obvious effects both on the apparent solubility and the biodegradation, followed by beta-CD and HPCD.
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210093, China. cbc8216@sina.com
authors.forename: Bang-cheng
authors.initials: BC
authors.lastname: Cai
authors.forename: Shi-xiang
authors.initials: SX
authors.lastname: Gao
authors.forename: Gen-fa
authors.initials: GF
authors.lastname: Lu
mesh_terms: D000073738:2-Hydroxypropyl-beta-cyclodextrin; D000150:Acinetobacter / Q000378:metabolism*; D001673:Biodegradation, Environmental; D001713:Biphenyl Compounds / Q000378:metabolism*; D017672:Nitrogen Compounds / Q000378:metabolism*; D012995:Solubility; D013056:Spectrophotometry, Ultraviolet; D047392:beta-Cyclodextrins / Q000378:metabolism*
chemical_list: D001713:Biphenyl Compounds; D017672:Nitrogen Compounds; D047392:beta-Cyclodextrins; C441457:carboxymethyl-beta-cyclodextrin; D000073738:2-Hydroxypropyl-beta-cyclodextrin; C031215:betadex