Quality Characteristics of Muffins Prepared with Yacon Powder

야콘 가루 첨가 머핀의 품질특성

  • Lee, Won-Gab (Division. of Hotel, Stewardess, Catering & Tourism, Keimyung college University) ;
  • Lee, Jeong-Ae (Division of Food and Culinary Science, Howon University)
  • 이원갑 (계명문화대학교 호텔항공외식관광학부) ;
  • 이정애 (호원대학교 외식조리학과)
  • Received : 2014.05.13
  • Accepted : 2014.08.10
  • Published : 2014.08.31

Abstract

This study investigated the physicochemical and sensory characteristics of muffins prepared with various amounts(0, 3, 6, 9, 12%) of yacon powder. The specific gravity of the muffins prepared by adding yacon powder was higher than that of the control group. The height of the muffins added with 3% yacon powder was higher than that of the other groups. The weight of the muffins prepared with yacon powder showed no significant difference among all the sample groups. The volume and specific loaf volume of the muffins were decreased by addition of yacon powder. The baking loss rate of the muffins prepared by adding yacon powder showed no significant difference among all the sample groups. The moisture content of the muffins was increased, but their pH was decreased significantly by addition of yacon powder. DPPH radical scavenging activity of the control group was 21.45%, whereas the muffins prepared with yacon powder ranged from 57.23~85.46%. The a value of redness was increased, but L and b values were decreased significantly by addition of yacon powder. The springiness, cohesiveness and brittleness of textural properties of the muffins were decreased significantly by addition of yacon powder. Sensory evaluation scores in terms of appearance, taste, texture and overall preference for the muffins showed that 6~9% substituted sample groups were higher than those of the others. The results of this study suggest that adding 6~9% of yacon powder was the best substitution ratio for muffins.

야콘 가루를 0, 3, 6, 9, 12% 첨가하여 머핀을 제조한 다음 품질특성을 비교하였다. 야콘 가루 첨가 머핀의 비중은 대조군보다 야콘가루 첨가량이 많을수록 유의적으로 높았다(p<0.001). 머핀의 높이는 대조군보다 야콘 가루 3% 첨가군이 가장 높았으며 야콘 가루 12% 첨가군이 가장 낮게 나타났다(p<0.001). 머핀의 중량은 대조군과 야콘 가루 첨가군간의 유의적인 차이가 없었으며 부피는 야콘 가루 3%와 6% 첨가군은 대조군과 유의적인 차이가 없었다(p<0.01). 머핀의 비용적은 야콘 가루 첨가량이 증가할수록 감소하였고(p<0.05) 굽기손실율은 시료간의 유의적인 차이는 없었다. 머핀의 수분함량은 야콘 가루 첨가량이 많을수록 증가하는 경향을 보였고(p<0.001) 머핀의 pH는 야콘 가루 첨가량이 증가할수록 감소하였다(p<0.001). 머핀의 DPPH 라디컬 소거능은 대조군의 전자공여능은 21.45%였으며 야콘 가루 첨가군은 57.23~85.46%로 대조군보다 높게 나타났다(p<0.001). 머핀의 색도 측정결과 야콘 가루를 첨가할수록 명도 L값과 황색도 b값은 감소하고 적색도 a값은 증가하는 경향을 보였다(p<0.001). Texture 측정결과 경도(Hardness)와 씹힘성(Chewiness)은 대조군과 야콘 가루 첨가군 사이에 유의적인 차이가 없었다. 탄력성(Springiness), 응집성(Cohesiveness)과 부서짐성(Brittleness)은 대조군보다 야콘 가루 첨가군이 낮은 값을 보였다. 머핀의 관능검사 결과 외관, 질감, 맛과 전반적인 기호도에서 야콘 가루 6%, 9% 첨가군 순으로 높게 나타났다. 이상으로 머핀에 대한 이화학적, 조직감, 항산화 활성 및 관능적 특성을 고려할 때 야콘 가루 첨가량은 6~9%가 가장 적당할 것으로 판단된다.

Keywords

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