1. Department
of Food and Environmental Sciences, University of Helsinki, P.O. Box 27, FI-00014 University of Helsinki, Finland
2. VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Finland
3. Department
of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India