Laccase mediated diclofenac transformation and cytotoxicity assessment on mouse fibroblast 3T3-L1 preadipocytes

• Main Authors: Sathishkumar, Palanivel, Mythili, Arumugam, Hadibarata, Tony, Jayakumar, Rajarajeswaran, Kanthimathi, M. S., Thayumanavan, Palvannan, Ponraj, Mohanadoss, Salim, Mohd. Razman, Mohd. Yusoff, Abdull Rahim
• Format: Article
• Language: English
• Published: The Royal Society of Chemistry 2014
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utm.my/id/eprint/53295/1/PalanivelSathishkumar2014_Laccasemediateddiclofenactransformation.pdf; http://eprints.utm.my/id/eprint/53295/; http://dx.doi.org/10.1039/c3ra46014b
• Institution: Universiti Teknologi Malaysia

Diclofenac is recently considered as one of the most devastating environmental pollutants, because of its biomagnification in the food chain which leads to potential harmful effects on non-targeted organisms. This study describes the optimized laccase mediated diclofenac transformation using response surface methodology (RSM) and cytotoxicity testing on mouse fibroblast 3T3-L1 preadipocytes. Three factors (laccase, syringaldehyde, reaction time) were used to optimize the diclofenac transformation. The optimum level of laccase, syringaldehyde and reaction time was found to be 1.91 U mL -1, 187 μg and 51 min for diclofenac transformation (20 mg L -1). The cytotoxicity assessment on mouse fibroblast 3T3-L1 preadipocytes showed that a maximum of 67.9% cell death occurred at 72 h treatment with diclofenac (200 μg mL-1), while the cells treated with laccase treated diclofenac (LTD) showed less toxicity on the cells. These findings can be addressed for the removal of diclofenac toxicity