Effect of Some Additives for Yukwa (Popped Rice Snack) Quality Improvement and Process Modification Trials

유과 품질향상을 위한 첨가물의 효과와 공정 단순화 시도

  • Shin, Dong-Hwa (Department of Food Science and Technology, Chonbuk National University) ;
  • Kim, Myung-Kon (Department of Food Science and Technology, Chonbuk National University) ;
  • Chung, Tae-Kyu (Department of Food Science and Technology, Chonbuk National University) ;
  • Lee, Hyun-Yu (Korea Food Research Institute)
  • Published : 1990.06.01

Abstract

Some additives were applied to improve Yukwa(Popped rice snack) quality and process modifications were tested for cutting down soaking time and application of rice flour. Addition of soaked soybean (3%, w/w) to dough showed higher expansion rate and better physical properties with more acceptable quality by sensory evaluation of Yukwa. Baking powder, modified starch and alcoholic liquor, Mackeali(rice wine, turbid). Soju(distilled liquor) and Yakju(rice wine, clear), were no positive effect on quality of Yukwa but alcoholic liquor gave more fine texture than others. High temprature soaking $(60^{\circ}C)$ of rice for 3 hours which is near gelatinization temperature of rice starch. gave same quality of Yukwa comparing with long time soaking (12 hours) at room temperature. Extention of high temperature soaking (12 hours) did not improve the quality of Yukwa. The 100 mesh of rice flour by dry milling method was better in expansion rate and hardness than 40 and 80mesh but it was worse than ordinary wet milling. It was notified that milling method and milling mechines for Yukwa preparation should be studied in more detail.

유과 품질향상을 위한 몇 가지 첨가물의 효과와 공정개선을 위한 수침시간 단축 및 쌀가루에 의한 유과제조 시험을 수행하였다. 불린 콩을 첨가(3%, w/w)한 유과는 팽화도가 높았고 물리적 조직특성도 우수하였으며 관능검사 결과도 이들 경향과 일치하였으나 baking powder, 변형녹말과 막걸리, 소주, 청주 등 주류는 첨가효과가 인정되지 않았다. 그러나 주류는 유과의 외형적인 조직이 치밀해지는 경향을 보였다. 쌀전분의 호화근접 온도인 $60^{\circ}C$의 고온수침에서 3시간 정도면 충분한 수화가 이루어져 저온 장시간($12{\sim}14$시간) 수침한 경우와 차이가 없었으며 고온수침시간의 연장(12시간)에서는 품질개선 효과가 인정되기 않았다. 그리고 건식제분한 쌀가루로 유과를 만드는 경우 100mesh가 팽화도 및 경도에서 우수하였으나 습식제분보다 품질이 떨어져 제분방법과 제분기의 별도연구가 필요하였다.

Keywords