Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality characteristics of cookies added with jujube powder

대추분말을 첨가한 쿠키의 품질 특성

  • Kim, Min Jung (Department of Food Science and Engineering, Daegu University) ;
  • Choi, Ji Eun (Department of Food Science and Engineering, Daegu University) ;
  • Lee, Jun Ho (Department of Food Science and Engineering, Daegu University)
  • Received : 2013.12.16
  • Accepted : 2014.02.06
  • Published : 2014.02.28
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Abstract

The feasibility of incorporating jujube powder as a value-added food ingredient in cookies was investigated. The amount of jujube powder added (0~20%) was found to have significantly affected the cookie quality (p<0.05). Furthermore, the pH ranged from 6.16 to 6.69, and moisture content gradually increased from 4.11% to 4.76%, while the spread ratio and loss rate have significantly decreased with the increasing levels of the powder added (p<0.05). Lightness decreased; however, the redness and yellowness, as well as hardness, have significantly increased with the higher amount of jujube powder in the formulation (p<0.05). In addition, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity was significantly increased (p<0.05) without remarkable differences between the control and 5% sample, and 15% and 20% sample (p>0.05). The consumer acceptance test indicated that the addition of jujube powder of up to 10% had a favorable effect on the consumer preferences in general. Based on the overall observation, the cookies with 5~10% jujube powder is recommended for taking advantage of the functional properties of jujube powder without sacrificing the sensory quality.

대추 분말의 첨가량을 0~20%로 달리하여 쿠키를 제조한 후 물리 화학적 품질, 항산화특성 및 소비자 기호도를 비교하였다. pH는 6.69~6.16 범위에서 유의적으로 감소하였고(p<0.05), 수분함량은 점차적으로 증가하였다. 대추 분말을 첨가할수록 퍼짐성과 손실률은 유의적으로 감소하였고(p<0.05), 손실률의 경우 5~15% 시료 간에서는 유의적인 차이는 없었다(p>0.05). 한편 명도($L^*$)는 대추 분말의 첨가량이 증가할수록 유의적으로 감소하였고, 적색도($a^*$)는 유의적으로 증가하였다(p<0.05). 황색도($b^*$)는 다소 증가하는 경향을 보였으나, 10~20% 첨가군 사이에 유의적인 차이는 발견되지 않았다(p>0.05). 경도와 DPPH radical 소거능은 유의적으로 증가하였으나(p<0.05), 일부 첨가군 사이에 유의적 차이는 발견되지 않았다(p>0.05). 소비자 선호도 검사결과, 5% 첨가군이 대부분 높은 평점을 받았지만 대조군과 비교하여 유의적으로 높은 항산화활성이 측정되지 않아, 생리적 활성과 관능적 품질을 고려하면 첨가농도로 5~10% 사이가 적절한 것으로 판단된다.

Keywords

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