Alkaline Extraction of Starch from Broken Rice of Pakistan

ABSTRACT: Six types of broken rice were chosen such as KSK-133, Basmati-86, Basmati Super, Kaynaat, IRRI-6, KS-282 then after the market survey, got its prices and also got its initial compositions of starch then one type of broken rice KSK-133 was selected due to economical point of view because its initial composition of starch was 70.3 % and its price was 34 rupees per kilogram. The low quality rice processed to produce the rice starch. The production process of the rice starch from low quality rice KSK-133 investigated. The starch extracted from rice by alkaline extraction technique. The main objective is to obtain high starch content from KSK-133 and compare with starch content of other two types which are even more economical such as IRRI-6 and KS-282 at best extraction condition of KSK-133. The independent variables are types of broken rice. In a steeping process, used distilled water with grinded flour sample of rice and set the operating conditions. 0.1M caustic soda solution was used for set the test pH. Maximum rice starch has been recovered up to 95.4 % from KSK-133. In comparison of starch content with other two types, KSK-133 starch content 89.95%, IRRI-6 starch content 86.64 % and KS-282 starch content 87.52 % has been achieved at best extraction condition.