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자색고구마 스펀지케이크의 저장기간 변화에 따른 품질 특성 KCI 등재

Quality Characteristics of Sponge Cake Added with Purple Sweet Potato Depending on Various Shelf-Life

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한국식품영양학회지 (The Korean Journal of Food And Nutrition)
한국식품영양학회 (The Korean Society of Food and Nutrition)
초록

The quality and characteristics of purple sweet potato sponge cake were studied with the addition of different proportions of purple sweet potato powder depending on storage period The pHs, heights, and weights of doughs were in the ranges of 6.3~6.5, 4.8~4.4 cm and 397~418 g, respectively. The sponge cake groups with the addition of different proportions of purple sweet potato powder showed significantly different characteristics in hardness, adhesiveness, cohesiveness, gumminess, and chewiness, according to texture profile analysis. The difference in colors of sponge cakes with addition with purple sweet potato revealed that L-value and b-value were significantly reduced but a-value especially increased according to the density. Using scanning electron microscopy (SEM), it was confirmed that the stoma size of purple sweet potato sponge cake become smaller and the stoma wall became thicker in proportion to the contents of purple sweet potato powder, which could result in an increased level of water content after a long period pf storage. According with the observations, water content remarkably increased after 4~6 days of storage and the ability to keep water content seemed to contribute to extention the shef-life of sponge cakes. In sensory evaluation, sponge cakes with high contents of purple sweet potato were preferred and cakes with the addition of 25% and 30% purple sweet potato powder was most preferred. It was expected that the shelf-life of purple sweet potato sponge cake was 4 days under the normal temperature.

목차
 Abstract  서 론  재료 및 방법   1. 재료   2. 자색고구마 스펀지케이크 제조 방법 및 저장 실험   3. pH 측정   4. 중량과 높이 측정   5. 수분 함량 측정   6. 색도 측정   7. 텍스처 측정   8. 미세구조의 관찰(SEM)   9. 관능검사   10. 통계처리  결과 및 고찰   1. 자색고구마 스펀지케이크 제조   2. pH   3. 자색고구마 스펀지케이크의 중량, 높이   4. 자색고구마 스펀지케이크의 수분 함량   5. 색도   6. 텍스처   7. 미세구조의 관찰   8. 관능검사  요약 및 결론  감사의 글  References
저자
  • 김종희(서일대학교 식품영양과) | Kim, Jong-Hee
  • 이근종( 숭의여자대학교 식품영양과) | 이근종