Native and Debranched Starch Modification Using Physico-Chemical Treatment to Increase Resistant Starch Content in Rice
Abstract
Besides dietary fiber, resistant starch is carbohydrate that escape human digestion system, therefore it has potential health benefits. Â A study on native and debranched starch from rice using physico-chemical treatment has been conducted. Physico chemical treatment used were autoclaving, extrusion and crosslinking. Â The result showed that debranched starch which was treated with autoclaving, extrusion and crosslinking had higher resistant starch content than native starch treated with the same physico chemical treatment. Â The best treatment with the highest resistant starch content was obtained from debranched starch treated with crosslinking. Â The physicochemical properties of the product were as follows: moisture content of 8,45%, ash content of 3,19%, starch content of 85,44%, resistant starch content of 3,67%, initial gelatinization temperature of 79,3oC, gelatinization temperature of 89,6oC, and maximum viscosity of 1478 AU.
Key word: resistant starch, debranching, autoclaving, extrusion, crosslinking
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