The procedure for preparing the micro-scale materials was adapted from previously reported procedure (Neethirajan et al., 2012). One gram of air dried isolated resistant carbohy- drate was hydrolyzed with 10.0 mL of 3.16 M sulfuric acid for 5 days at 100 rpm and 40 1C in a mini vortex incubator. At the end of the fifth day, the solution was cooled to room temperature, was neutralized with successive washings with millipore water and was freeze dried using liquid nitrogen.