Acknowledgements This work was supported in part
by grant from the Uehara Memorial Foundation, Japan. We
would like to thank Professor Masao Tokunaga and Assistant
Professor Matsujiro Ishibashi (Department of Biochemical
Science and Technology, Faculty of Agriculture, Kagoshima
University) for their guidance and many helpful suggestions.
The liquid portions of tapé ketan samples used in this study
were kindly provided by Dr. Didik Wisnu Widjajanto from
Indonesia