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The purpose of this study was to evaluate the jujube hot-water extraction and antioxidant. After extraction of hot-water jujube, general composition analysis and functional tests were performed. The results of general composition analysis showed 22.33% of moisture content, 0.71% of crude lipid, 5.21% of crude protein, and 3.87% of ash. From DPPH test results, in concentrations of 1,000 μg/mL of jujube extracts, electron donating ability was shown with 68.24%. The SOD ability in concentrations of 1,000 μg/mL was 13.12%. The nitrite scavenging ability of jujube extracts was 11.79% at 1,000 μg/mL. The yogurt with 0, 1, 2, 3 and 4% of jujube extracts was made, and the general composition analysis and the functional tests were performed. The results of the general composition analysis of jujube yogurt, showed 74.71~76.56% of moisture contents, 1.31~3.38% of crude lipid, 2.13~3.40% of crude protein, and 1.18~1.28% of ash. The DPPH test results showed 46.33% for 1% added jujube extract, 53.78% for 2% added jujube extract, 90.87% for 3% added jujube extract, and 89.58% for 4% added jujube extract. The SOD ability showed 4.93% for 1% added jujube extract, 7.28% for 2% added jujube extract, 11.38% for 3% added jujube extract, and 11.50% for 4% added jujube extract. Key words: jujube, jujube extract, antioxidant activity, curd yogurt, functional food

the korean journal of food and nutrition

Antioxidant Activity of Jujube and Curd Yogurt Addition to Jujube

pdf-texts/10.9799_ksfan.2014.27.3.331.txt