title: Antioxidant Activity of Brown Soybean Ethanolic Extracts and Application to Cooked Pork Patties.
abstract: The brown soybean extract (BE, extracted by distilled water, 50%, 75%, and 95% ethanol) were analyzed for their total phenol, flavonoid, anthocyanin content, and DPPH radical-scavenging activity to determine antioxidant activities. Brown soybean extract with 75% ethanol showed significantly higher DPPH radical scavenging activity, total phenol and anthocyanin content compared to the other treatments (p<0.05). Then, brown soybean extract with 75% ethanol was applied to pork patties at different concentration (0.05%, 0.1%, and 0.2%) and lipid oxidation was evaluated during 15 d of refrigerated storage. Addition of BE significantly increased redness and pH values, respectively (p<0.05). Moreover, TBARS value of pork patties decreased significantly (p<0.05) as BE concentration increased. In sensory evaluation, pork patties with 0.1% BE had significantly higher score than other treatments in flavor and overall acceptability (p<0.05). Consequently, these results indicate that 0.1% BE could be an effective natural antioxidant to inhibit lipid oxidation in pork patties.
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Choong-Hee
authors.initials: CH
authors.lastname: Lee
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Ko-Eun
authors.initials: KE
authors.lastname: Hwang
authors.affiliation: Meat Science and Muscle Biology Lab, Purdue University, West Lafayette, IN 47907, USA.
authors.forename: Hyun-Wook
authors.initials: HW
authors.lastname: Kim
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Dong-Heon
authors.initials: DH
authors.lastname: Song
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Yong-Jae
authors.initials: YJ
authors.lastname: Kim
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Youn-Kyung
authors.initials: YK
authors.lastname: Ham
authors.affiliation: Food Processing Research Center, Korean Food Research Institute, Seongnam 13539, Korea.
authors.forename: Yun-Sang
authors.initials: YS
authors.lastname: Choi
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Sung-Jin
authors.initials: SJ
authors.lastname: Jang
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Tae-Jun
authors.initials: TJ
authors.lastname: Jeong
authors.affiliation: Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
authors.forename: Cheon-Jei
authors.initials: CJ
authors.lastname: Kim
keywords: anthocyanin; antioxidant; brown soybean; pork patty; shelf-life