Physicochemical Properties of Rice Extrudate Added with Onion Kimchi Powder
양파의 이용성 증대를 위해서 양파김치 분말을 첨가하여 풍미와 물리적 특성을 개선한 쌀 압출스낵의 제조조건에 따른 팽화물의 수분흡수율, 경도, 팽창률, 색도변화 및 관능검사 등의 품질특성을 조사하였다. 양파김치 분말 를 쌀가루에 첨가한 후 수분함량 로 조절하여 바렐온도 , 스크루 속도 250 rpm에서 압출구로 압출성형 한 다음 건조하여 양파김치 분말을 첨가한 쌀 압출팽화물을 제조하였다. 이들 중에서 양파김치 분말과 쌀가루 혼합물의 수분함량 2
An extrusion process was to make an onion kimchi snack from rice grit and onion kimchi powder, in an effort to enhance the nutritional value, flavor, and physicochemical properties of the extrudate. This study investigated optimum conditions (moisture content, barrel temperature, and the content of onion kimchi powder) for the production of high-quality rice extrudate products, and measured quality properties (water absorption index, texture, expansion ratio, and color) of rice extrudate to which onion kimchi powder had been added. Onion kimchi powder at 3%, 5%, 7%, and 10% (all w/w) was mixed with rice grit and the mixture then extruded in a twin-screw extruder. The texture of onion kimchi mack became softer as onion kimchi powder level rose, and water absorption ability increased. The expansion ratio and the lightness of extrudates decreased with increases in onion kimchi powder levels. The maximum water absorption index am the minimum hardness were obtained with 10% onion kimchi powder. Rice extrudate with 10% onion kimchi powder was suitable for extrusion cooking md obtained the highest score for overall acceptability by sensory evaluation.