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Preparation and Physicochemical Characteristics of Octenyl Succinated Rice Starches Based on Amylose Content

아밀로오스 함량에 따른 옥테닐호박산 쌀전분의 제조 및 이화학적 특성

  • Jung, Myung-Hoon (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Youn, Kwang-Sup (Department of Food Science and Technology, Catholic University of Daegu)
  • 정명훈 (대구가톨릭대학교 식품가공학전공) ;
  • 윤광섭 (대구가톨릭대학교 식품가공학전공)
  • Received : 2012.06.20
  • Accepted : 2012.08.10
  • Published : 2012.10.31

Abstract

The purpose of this study was to investigate the preparation and physicochemical characteristics of n-octenylsuccinylated (OSAn) rice starches with different rice amylose contents. Amylose contents of Jinsumi flour and Milyang 261 flour were 15.42 and 20.31%, respectively. After processing by alkali treatment, amylose contents of Jinsumi rice starch and Milyang 261 rice starch were 34.21% and 39.32%, respectively. After OSAn treatment, the degree of substitution and reaction efficiency of Jinsumi starch were higher than those of Milyang 261. The stability of the modified Jinsumi emulsion was higher than that of the Milyang 261 emulsion. Viscosity of the Jinsumi emulsion was higher than that of the Milyang 261 emulsion. When the emulsions were spray dried, modified Jinsumi rice starch showed excellent coating efficiency compared to that of modified Milyang 261 rice starch. Therefore, Jinsumi was more suitable than Milyang 261 to apply for encapsulation as wall materials.

쌀 전분의 아밀로오스 함량차이에 따른 옥테닐호박산(OSAn) 변성전분의 제조 특성 및 이화학적 특성을 검토하였다. 아밀로오스의 함량은 Jinsumi가 15.42%, Milyang 261은 34.21%였으며 전분 추출 후의 Jinsumi가 20.31%, Milyang 261은 39.32%였다. 치환도 및 반응효율은 Milyang 261이 각각 0.0137, 89.89%였으며 Jinsumi는 0.0144, 95.92%로 Jinsumi가 Milyang 261보다 높았다. 점도는 Jinsumi와 Milyang 261이 각각 30.1 cP 및 7.8 cP이었으며 옥테닐호박산을 이용한 변성전분의 경우 240.5 cP 및 162.6cP으로 상승하였다. 변성전분의 유화안정성은 두 품종 모두 대체적으로 안정하였으며 특히 Jinsumi는 높은 유화안정성을 보였으며, 변성전분을 부형제로 이용하여 미세캡슐화한 후의 코팅효율은 Jinsumi가 65.70-73.54%, Milyang 261이 29.45-36.98%로 나타나 분무건조를 통한 미세캡슐 효율은 Jinsumi가 높았다. 이러한 결과를 볼 때 분무건조를 통한 미세캡슐화의 피복물질 소재로서 변성을 통한 쌀 전분이 이용가치가 있을 것으로 사료되며 특히 Jinsumi가 Milyang 261에 비하여 높은 활용도를 가질 것이라 판단된다.

Keywords

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