article deprotection reaction ribose unclassified drug Banana Biocatalysts Carbohydrates Deacetylation Deprotection Escherichia coli Fruits Furanosides Hydrolases Hydrolysis Regioselective deacetylation Tissue arabinose arabinoside bacterial enzyme banana biocatalyst chemical structure deacetylation deoxyribose enzyme enzyme isolation enzyme mechanism enzyme substrate enzyme synthesis furan derivative