Can we separate out the Resistant starch, Slowly Digestible Starch, and Rapidly Digestible starch or can we purchase from somewhere!
Yes, we can separate resistant starch from rice, for example, using the enzymes alpha-amylase, glycosides and proteases (the enzyme method).
But it does not mean anything: the whole digestion process can be fitted into first-order kinetics - i.e., there is no RDS and SDS in terms of the structural difference at least, as they are digested at same rate!
RDS, SDS and RS classification is derived from the Englyst method. While that work was pioneering, it has been realized for quite a few years that following digestion kinetics using the Logarithm of Slopes method shows that very frequently the whole digestogram follows simple first-order kinetics, and can this be represented by a single rate constant (Butterworth, P. J.; Warren, F. J.; Grassby, T.; Patel, H.; Ellis, P. R., Analysis of starch amylolysis using plots for first-order kinetics, Carbohydrate Polymers 2012, 87, 2189; Edwards, C. H.; Warren, F. J.; Milligan, P. J.; Butterworth, P. J.; Ellis, P. R., A novel method for classifying starch digestion by modelling the amylolysis of plant foods using first-order enzyme kinetic principles, Food & Function 2014, 5, 2751-2758.).
Hi Maryam,
You may make an inquiry at Alfa Chemistry, they offer kinds of good-quality chemicals.
https://www.alfa-chemistry.com/inquiry
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