title: Quality Characteristics of Stirred Yoghurt Added with Fermented Red Pepper.
abstract: Pungency of hot pepper has limited its usage even though it shows various health beneficial effects. This study was conducted to develop the novel yoghurt containing hot pepper with diminishing pungency and aimed to examine the quality characteristics of yoghurt prepared with fermented red pepper. Hot pepper was first fermented with Bacillus licheniformis SK1230 to reduce the pungency of capsaicin. We then examined the quality, sensory characteristics, and antioxidant activity of yoghurt containing the fermented red pepper. The titratable acidity of this yoghurt increased whereas the viscosity decreased with increasing amounts of added red pepper. The total polyphenol content increased in proportion to the amount of added red pepper. The antioxidant activity significantly increased with the addition of red pepper (p<0.05). Color evaluation showed that the L value decreased whereas the a and b values increased significantly with the amount of red pepper added (p<0.05). In the sensory evaluation, yoghurt prepared with higher amounts of fermented red pepper received lower scores. However, yoghurt containing fermented red pepper at a concentration of 0.05% received higher scores for taste, flavor, and overall acceptability than yoghurt prepared with non-fermented pepper. Therefore, it can be concluded that the application of red pepper fermented by Bacillus licheniformis SK1230 gives beneficial feature to the preparation of yoghurt.
authors.affiliation: Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea.
authors.forename: Mi-Sang
authors.initials: MS
authors.lastname: Yu
authors.affiliation: Institute of Animal Resource Center, Konkuk University, Seoul 143-701, Korea.
authors.forename: Jeong-Mee
authors.initials: JM
authors.lastname: Kim
authors.affiliation: Institute of Animal Resource Center, Konkuk University, Seoul 143-701, Korea; Department of Food Science & Biotechnology of Animal Resources, Konkuk University, Seoul 143-701, Korea.
authors.forename: Chi-Ho
authors.initials: CH
authors.lastname: Lee
authors.affiliation: Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea.
authors.forename: Yoon-Jeong
authors.initials: YJ
authors.lastname: Son
authors.affiliation: Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea; Institute of Animal Resource Center, Konkuk University, Seoul 143-701, Korea.
authors.forename: Soo-Ki
authors.initials: SK
authors.lastname: Kim
keywords: B. licheniformis; DPPH; antioxidant activity; fermented red pepper; quality characteristics; stirred yoghurt