title: Biotransformation of nitro-polycyclic aromatic compounds by vegetable and fruit cell extracts.
abstract: Extracts from various vegetables and fruits were investigated for their abilities to reduce nitro-polycyclic aromatic hydrocarbons (NPAHs). The extracts from grape and onion exhibited an interesting selectivity, yielding corresponding hydroxylamines or amines as major products under mild conditions of 30 °C and pH 7.0. Grape extracts reduced the 4-nitro-1,8-naphthalic anhydride with the highest conversion rate (>99%) and the highest ratio of hydroxylamine to amine (95:5). In contrast, the onion extracts reduced 4-nitro-1,8-naphthalic anhydride with a conversion rate of 94% and a ratio of hydroxylamine to amine of 8:92. The thiol-reducing agent, β-mercaptoethanol, and metal cations, Ca(2+) and Mg(2+), greatly increased the reductive efficiency. This work provides an alternative strategy for biotransformation of nitro-polycyclic compounds.
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Xie
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Qing
authors.initials: Q
authors.lastname: Yang
mesh_terms: D001673:Biodegradation, Environmental; D004785:Environmental Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D005638:Fruit / Q000737:chemistry*; D009574:Nitro Compounds / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry* / Q000302:isolation & purification; D014675:Vegetables / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D009574:Nitro Compounds; D010936:Plant Extracts; D011084:Polycyclic Aromatic Hydrocarbons