Pengaruh Perlakuan Heat Moisture Treatment (Hmt) terhadap Sifat Fisiko Kimia dan Fungsional Tepung Beras dan Aplikasinya dalam Pembuatan Bihun Berindeks Glikemik Rendah

摘要

Primary prevention of diabetes mellitus (DM) diseases on risk individuals can be done through lifestyle modifications, such as proper diet by consumming low glycemic index (GI) foods. Rice vermicelli is one alternative carbohydrate sources instead of rice. Vermicelli can be consumed for all groups, including people with autism to be compatible with a gluten free diet. This study aimed to obtain the physico-chemical properties and functional changes caused by the heat moisture treatment (HMT) in rice flour and its application in production of low GI rice vermicelli. Results showed HMT treatment in two rice varieties namely IR42 and Ciherang had different physico-chemical properties from native rice vermicelli. HMT process can reduce the stickiness of the vermicelli, improve elasticity and the panelists preference of cook rice vermicelli. HMT processes affect the functional properties of rice vermicelli. HMT processes in rice flour with methods of two cycles autoclaving-cooling in general can increase of amylose, carbohydrate and dietary fiber content, and lowers the starch digestibility and protein content of the flour. HMT rice vermicelli had higher levels of dietary fiber (6.24 to 6.36%) than the native rice vermicelli (5.28 to 5.66%). In vitro starch digestibility of HMT rice vermicelli ranged from 67.92 to 69% was lower than native rice vermicelli (72.64 to 73.52%). HMT rice vermicelli had lower GI (47) than the native one, i.e.61.