All sugars are sweet because they contain OH groups with a particular orientation that can interact with the taste receptor for sweetness in our tongues.

And this is a good site to answer about the mechanism

http://butane.chem.uiuc.edu/pshapley/GenChem2/B4/3.html

you can find the details in this website

http://butane.chem.uiuc.edu/pshapley/GenChem2/B4/3.html

yup agreed Medhat Abozid but if any publication regarding this topic which may be more helpful and authentic

OK

I will send it now

Yup its good one thanks