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http://dx.doi.org/10.3746/jkfn.2011.40.6.798

Chemical Composition and Antioxidant Activity of Deoduk (Codonopsis lanceolata) and Doragi (Platycodon grandiflorum) according to Temperature  

Hwang, Cho-Rong (Dept. of Food Science and Technology, Chungbuk National University)
Oh, Seung-Hee (Dept. of Food Science and Technology, Chungbuk National University)
Kim, Hyun-Young (Dept. of Food Science and Technology, Chungbuk National University)
Lee, Sang-Hoon (Dept. of Food Science and Technology, Chungbuk National University)
Hwang, In-Guk (Dept. of Agro-food Resources, National Academy of Agricultural Science, RDA)
Shin, Yu-Su (Dept. of Herbal Crop Research, Ginseng Research Division, RDA)
Lee, Jun-Soo (Dept. of Food Science and Technology, Chungbuk National University)
Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.40, no.6, 2011 , pp. 798-803 More about this Journal
Abstract
We investigated the changes in chemical composition and antioxidant activity of Deoduk (Codonopsis lanceolata) and Doragi (Platycodon grandiflorum) with heating. Deoduk and Doragi were heated to $110\sim150^{\circ}C$ for 2 hours. The total polyphenol content of Deoduk and Doragi reached high values of 6.31 and 7.34 mg/g, respectively, at $150^{\circ}C$. The total polyphenol content of raw Deoduk and Doragi were 0.60 and 0.59 mg/g, respectively. The DPPH radical scavenging activity ($IC_{50}$) of Deoduk and Doragi decreased from 13.94 and 6.83 mg/mL, respectively, in raw samples to 0.81 and 0.94 mg/mL, respectively, in samples heated to $150^{\circ}C$. The ABTS radical scavenging activity of Deoduk and Doragi increased from 0.43 and 0.21 mg AA eq/g, respectively, in raw samples to 3.55 and 4.83 mg AA eq/g, respectively, in samples heated to $150^{\circ}C$. The reducing power of raw Deoduk and Doragi was 0.1 and 0.06, respectively, which was increased to 0.54 and 0.50, respectively, in samples heated to $150^{\circ}C$. Fructose content decreased after heating to $130^{\circ}C$. The sucrose content of the samples increased slowly with heating up to $120^{\circ}C$, but was not detected at warmer temperatures. The organic acid and 5-HMF of the samples increased gradually with increasing temperature.
Keywords
Codonopsis lanceolata; Platycodon grandiflorum; heating temperature; antioxidant activity; 5-HMF;
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Times Cited By KSCI : 23  (Citation Analysis)
Times Cited By SCOPUS : 2
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