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http://dx.doi.org/10.3746/jkfn.2013.42.5.675

Physicochemical and Functional Properties of Kochujang with Broccoli Leaf Powder  

Oh, You-Sung (Biotechnology Regional Innovation Center, Jeju National University)
Baek, Jin-Woo (Biotechnology Regional Innovation Center, Jeju National University)
Park, Kyeong-Yeol (Dept. of Food Bioengineering, Jeju National University)
Hwang, Joon-Ho (Biotechnology Regional Innovation Center, Jeju National University)
Lim, Sang-Bin (Biotechnology Regional Innovation Center, Jeju National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.42, no.5, 2013 , pp. 675-681 More about this Journal
Abstract
Home-made broccoli Kochujang (HMBK) was prepared with the addition of 5% broccoli leaf powder. Its physicochemical and functional properties were measured in extracts (80% methanol, 80% ethanol, and distilled water) and compared with home-made Kochujang (HMK) and factory-produced Kochujang (FPK). Total phenolic content (TPC) was 22% higher in methanol extract from HMBK (524.2 GAE/100 g) compared to HMK (431.0 GAE/100 g). TPC was 8% higher in ethanol extract from HMBK (541.9 GAE/100 g) compared to HMK (499.9 GAE/100 g). DPPH radical scavenging activity was 1.6 times higher in the methanol extracts from HMBK than HMK. In contrast there was no difference in DPPH radical scavenging activity between HMBK and HMK. Oxygen radical absorbance capacities in methanol and ethanol extracts from HMBK were similar to HMK, but both were higher than extracts from FPK (55% and 23% higher, respectively). Inhibition of angiotensin I converting enzyme activity in methanol extracts from HMBK was similar to HMK, but it was 2.6 times higher than inhibition activities from FPK. Interestingly, only ethanol extract from HMBK showed a 10.7% and 18.3% inhibition on cell growth of the human colon adenocarcinoma grade II cell line (HT-29) and human lung carcinoma cell line (NCI-H1229), respectively. These results indicate home-made Kochujang with broccoli leaf powder contains high total phenolics, antioxidant activities, and cancer cell growth inhibition activities.
Keywords
broccoli Kochujang; total phenolics; antioxidant activity; anticancer activity;
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