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http://dx.doi.org/10.3746/jkfn.2006.35.9.1146

Antioxidative Activity of Different Species Lycium chinensis Miller Extracts by Harvest Time  

Park, Soo-Jin (Dept. of Food Science & Nutrition, Hoseo University)
Park, Won-Jong (Dept. of Food Science & Technology, Kongju National University)
Lee, Bong-Chun (Chungnam A. T. A. Chungyang Aoxthorn Experimental Station)
Kim, Su-Dong (Chungnam A. T. A. Chungyang Aoxthorn Experimental Station)
Kang, Myung-Hwa (Dept. of Food Science & Nutrition, Hoseo University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.35, no.9, 2006 , pp. 1146-1150 More about this Journal
Abstract
In the present study, the Lycium chinensis Miller was harvested at intervals of one month in order to distinguish outstanding species and to determine optimal harvest time. From these harvests, extracts were prepared from ethanol. The total usable sugar, betaine, and phenolic acid contents as well as electron donating ability and SOD liked activity of the extracts were then measured. While sugar content of the Lycium chinensis Miller showed no significant difference among the various species examined, usable sugar content of the crop harvested in November was higher than that of the crop harvested in August. The Lycium chinensis Miller was picked in August, September, October, and November and analyzed for betaine content. According to this analysis, betaine content was higher in the crop harvested in November than in that harvested in August. In particular, considerable difference in betaine content per species or harvest time was exhibited. The SOD-liked activity in all of the Lycium chinensis Miller extracts showed an alleviation effect of at least 90%. In addition, there was no significant difference according to either species or harvest time. On the other hand, SOD liked activity was higher in November than in August.
Keywords
antioxidant; Lycium chinensis Miller; SOD-liked activity; harvest time;
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