Food Engineering Progress (산업식품공학)

Korean Society for Industrial Food Engineering (한국산업식품공학회)
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Quality Characteristics of Cookies Made with Flaxseed Powder

아마씨 가루를 첨가한 쿠키의 품질특성

  • Kim, Su-Yean (Department of Food Science & Nutrition, Daejin University) ;
  • Chung, Hai-Jung (Department of Food Science & Nutrition, Daejin University)
  • 김수연 (대진대학교 식품영양학과) ;
  • 정해정 (대진대학교 식품영양학과)
  • Received : 2011.07.07
  • Accepted : 2011.08.09
  • Published : 2011.08.31
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Abstract

This study was conducted to investigate the quality characteristics of cookies added with different levels of flaxseed powder. Cookies were prepared with four different levels (0%, 6%, 12% and 18%) of flaxseed powder and the physicochemical properties were examined. The pH of cookie dough was higher in cookies containing flaxseed powder. The spread factor of control cookie was lower than that of cookies containing 6%, 12% and 18% of flaxseed powder. The incorporation of flaxseed powder in cookies lowered lightness and yellowness but increased redness values. Rheology testing showed that cookies with 6%, 12% and 18% flaxseed powder had significantly lower hardness value than control cookies (p < 0.05). Consumer acceptance test revealed that overall preference score was the highest in cookies containing 12% flaxseed powder. During storage at $55^{\circ}C$ for 60 days, peroxide value increased until 30 days of storage and decreased thereafter, while acid value steadily increased and there was no significant difference in peroxide value and acid value between control cookies and flaxseed added cookies.

본 연구에서는 아마씨 가루를 밀가루 중량기준 0%, 6%, 12%, 18%의 비율로 첨가한 쿠키를 제조한 다음, 반죽의 밀도, pH, 수분 함량, 쿠키의 퍼짐성, 손실률, 팽창률, 경도, 색도, 관능평가, 과산화물가, 산가 등을 측정하였다. 반죽의 밀도는 대조군과 실험군 간에 유의적인 차이가 없었고 pH는 첨가군이 대조군보다 높게 나타났으며 수분 함량은 낮게 나타났다. 퍼짐성은 아마씨 가루 첨가량이 증가할수록 증가하였고(p<0.05) 손실률은 대조군과 6% 첨가군 간에 유의적인 차이가 없었고 12% 첨가군이 가장 높았으며 18% 첨가군이 가장 낮았다. 팽창률은 대조군과 6%, 12% 첨가군 간에 차이가 없는 반면, 18% 첨가군은 대조군보다 감소하였다. 경도는 아마씨 가루 첨가군이 대조군보다 유의적으로 낮았고(p<0.05) 명도와 황색도는 아마씨 가루 첨가량이 증가할수록 감소하였다. 관능검사결과 아마씨 가루 첨가량이 증가할수록 쿠키의 표면색, 고소한 맛이 강하게 평가되었고 전반적인 기호도는 12% 첨가군이 대조군보다 높은 점수로 평가되었다(p<0.05). 저장 기간에 따른 산화 안정성을 측정한 결과 과산화물가는 모든 시료에서 저장 30일까지 증가하다가 감소하였고 산가는 저장기간 동안 지속적으로 증가하였으며 각 시료 간에 유의적인 차이는 없었다.

Keywords

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