1. Amin,G., De Mot,R., Van Dijick,K. and Verachtert,H. (1985). Appl. Microbiol. Biotechnol., 22, 237?245
2. AOAC (1970). Official Methods of Analysis, W.Horwitz, (ed.) p.131?143. Association of Official Analytical Chemists, Washington DC
3. Casey,G.P., Dhawale,M.D. and Ingledew,W.M. (1984). In 5th Canadian Bioeng. R&D Seminar (S.Hasnain, ed.) pp. 544?547, Elsevier Applied Scientific Publishers, New York
4. Chopra,R.N., Nayar,S.I. and Chopra,J.C. (1956). Glossary of Indian Medicinal Plants, Council of Scientific and Industrial Research, New Delhi, India
5. Frelot,D., Moulin,G. and Galzy,P. (1982). Biotechnol. Lett., 4, 705?708