Biodegradation and dissolution of polyaromatic hydrocarbons by Stenotrophomonas sp

• Published in: Bioresource technology Vol. 216; pp. 1102 - 1105
• Main Authors: Tiwari, Bhagyashree, Manickam, N., Kumari, Smita, Tiwari, Akhilesh
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01-09-2016
• Subjects: Benzo[α]pyrene; Biodegradation; Biodegradation, Environmental; Phenanthrene; Polycyclic aromatic hydrocarbons; Polycyclic Aromatic Hydrocarbons - analysis; Polycyclic Aromatic Hydrocarbons - chemistry; Polycyclic Aromatic Hydrocarbons - metabolism; Pyrene; Solubility; Stenotrophomonas - chemistry; Stenotrophomonas - metabolism; Surface-Active Agents - chemistry; Surfactants; Biodegradation; Pyrene; Phenanthrene; Polycyclic aromatic hydrocarbons; Surfactants; Benzo[α]pyrene
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2016.06.047

•Stenotrophomonas sp. strain IITR87 degraded polycyclic aromatic hydrocarbons.•Degradation occurred in order for phenanthrene, followed by pyrene and benzo[α]pyrene.•Dissolution of PAHs increased in the presence of surfactants.
The aim of this work was to study the biodegradation capabilities of a locally isolated bacterium, Stenotrophomonas sp. strain IITR87 to degrade the polycyclic aromatic hydrocarbons and also check the preferential biodegradation of polycyclic aromatic hydrocarbons (PAHs). From preferential substrate degradation studies, it was found that Stenotrophomonas sp. strain IITR87 first utilized phenanthrene (three membered ring), followed by pyrene (four membered ring), then benzo[α]pyrene (five membered ring). Dissolution study of PAHs with surfactants, rhamnolipid and tritonX-100 showed that the dissolution of PAHs increased in the presence of surfactants.