TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: The process preferably involves including laccase-containing material and laccase mediator-containing material (preferably 1-hydroxy benzotriazole containing material) in the reversed micelle, such that laccase activity in the organic solvent is increased. The surfactant is di-2-ethylhexyl sodium sulfosuccinate or a cetyl trimethyl-ammonium bromide. The organic solvent is preferably is obtained which is insoluble or slightly soluble in water. The laccase-containing material is a culture or a substance obtained by treating the culture of the laccase-producing microorganism e.g. Trametes sp. Ha1 (preferably Deadalea dickinsii. The laccase-producing microorganism is chosen from subphylums zygomycetes, ascomycetes, basidiomycetes or imperfect-fungi, and is preferably chosen from the genus Neurospora, Mucor, Podospora, Fomes, Lentinus, Schizophyllum, Trametes, Coriolus, Thanatephorus, Rhizoctonia, Psatyrella, Polyporus, Coprinus, Phlebia, Sporormiella, Pleurotus, Ganoderma, Phanerochaete, Trachyderma, etc. More preferably, the laccase-producing microorganism is Myceliophtora thermophila, Scytalidium thermophilum, Rhizoctonia solani, Pycnoporus coccineus, Fomitella fraxinea, Pyricularia oryzae, Trachyderma tsunodae, Rigidoporus zonalis, Aspergillus niger, Acremonium murorum, etc. The solvent, preferably isooctane, which contains laccase- containing material in the reversed micelle formed by di-2- ethylhexyl sodium sulfosuccinate, has the following o- chlorophenol degradation properties: is stable at pH 3-8, and at temperature 40-75degreesC. EXAMPLE - Laccase (120000 POU/g) was dissolved in phosphoric acid buffer to obtain laccase solution. A reversed micelle containing isooctane solution which contains laccase solution, and di-2-ethylhexyl sodium sulfosuccinate (Aerosol OT, abbreviated as AOT) and o-chlorophenol was formed. Also a reversed micelle was formed using cetyltrimethyl-ammonium bromide (CTAB) and freeze-dried laccase enzyme. In addition, the freeze- derived enzyme was directly added to a isooctane not containing surfactant. All the three reaction systems were maintained at 40degreesC, and the decomposition of o-chlorophenol was tested using the three systems. Results showed that the reversed micelle containing AOT provided highest decomposition activity (80%), while the reversed micelle containing CTAB and the freeze-dried enzyme provided low decomposition activity (20%). The decomposition activity of freeze-dried enzyme added to isooctane not containing the surfactant was nil.