TY - JOUR
T1 - Oil-in-water microemulsions enhance the biodegradation of DDT by Phanerochaete chrysosporium
AU - Zheng, Guanyu
AU - Selvam, Ammaiyappan
AU - Wong, Jonathan W C
N1 - Funding Information:
The authors would like to thank the financial support from the Research Grant Council of the Hong Kong Special Administrative Region, People’s Republic of China (Grant HKBU261307 ) and the Faculty Research Grant of the Hong Kong Baptist University (FRG/06-07/II-44).
PY - 2012/12
Y1 - 2012/12
N2 - A novel approach was developed using oil-in-water (O/W) microemulsions formed with non-ionic surfactant, cosurfactant (1-pentanol) and linseed oil, at the cosurfactant to surfactant ratio (C/S ratio, w/w) of 1:3 and oil to surfactant ratio (O/S ratio, w/w) of 1:10, to enhance the biodegradation of DDT by the white rot fungus Phanerochaete chrysosporium. Results showed that microemulsions formed with Tween 80 effectively enhanced the biodegradation of DDT by P. chrysosporium and the enhancement was about two times that of Tween 80 solution, while microemulsion formed with Triton X-100 exhibited negative effect. Further studies revealed that microemulsion formed with Tween 80 enhanced the biodegradation of DDT through transporting DDT from crystalline phase to mycelium as well as their positive effect on the growth of P. chrysosporium; of these, the former is likely the most important and pre-requisite for the biodegradation of DDT by P. chrysosporium.
AB - A novel approach was developed using oil-in-water (O/W) microemulsions formed with non-ionic surfactant, cosurfactant (1-pentanol) and linseed oil, at the cosurfactant to surfactant ratio (C/S ratio, w/w) of 1:3 and oil to surfactant ratio (O/S ratio, w/w) of 1:10, to enhance the biodegradation of DDT by the white rot fungus Phanerochaete chrysosporium. Results showed that microemulsions formed with Tween 80 effectively enhanced the biodegradation of DDT by P. chrysosporium and the enhancement was about two times that of Tween 80 solution, while microemulsion formed with Triton X-100 exhibited negative effect. Further studies revealed that microemulsion formed with Tween 80 enhanced the biodegradation of DDT through transporting DDT from crystalline phase to mycelium as well as their positive effect on the growth of P. chrysosporium; of these, the former is likely the most important and pre-requisite for the biodegradation of DDT by P. chrysosporium.
KW - Biodegradation
KW - DDT
KW - Non-ionic surfactants
KW - Phanerochaete chrysosporium
UR - http://www.scopus.com/inward/record.url?scp=85027925880&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2012.02.141
DO - 10.1016/j.biortech.2012.02.141
M3 - Journal article
C2 - 22520221
AN - SCOPUS:85027925880
SN - 0960-8524
VL - 126
SP - 397
EP - 403
JO - Bioresource Technology
JF - Bioresource Technology
ER -
