Kim, Yong-Jae
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Kim, Hack-Youn
(Department of Animal Resources Science, Kongju National University)
Choe, Ju-Hui
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Park, Jae-Hyun
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Ham, Youn-Kyung
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Yeo, Eui-Joo
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Hwang, Ko-Eun
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
Kim, Cheon-Jei
(Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
The effects of adding goldenrod leaf powder (GLP) and goldenrod stem powder (GSP) (0.1% and 0.5%) to raw ground pork on antioxidant activity were examined. The following six treatment groups were used: Control (without antioxidant), GLP1 (with 0.1% GLP), GLP2 (with 0.5% GLP), GSP1 (with 0.1% GSP), GSP2 (with 0.5% GSP) and AS (with 0.05% ascorbic acid). The chemical compositions, pH values, instrumental color, conjugated diene (CD), free fatty acids (FFA) and thiobarbituric acid-reactive substance (TBARS) value were measured during 15 d of storage at chilled temperatures. The addition of GLP and GSP showed no effect on moisture, protein and fat contents of the samples. However, adding 0.5% GSP increased the ash contents of ground pork (p<0.05). The pH values of treated samples decreased until day 7, and then increased thereafter. The addition of GLP and GSP decreased the $L^*$ and $a^*$ values and increased the $b^*$ value (p<0.05). The CD, FFA and TBARS value of the control were higher (p<0.05) than samples containing GLP and GSP. The addition of GLP and GSP resulted in a significant decrease in CD, FFA and TBARS values. Overall, this study demonstrated that GL and GS could be used as an antioxidant of raw ground pork.