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Antioxidant Activities of Prunus salicina Lind cv. Soldam (Plum) at Different Growth Stages  

Yu Mi-Hee (Department of Food Science and Technology, School of Natural Science, Keimyung University)
Lee Syngook (Department of Food Science and Technology, School of Natural Science, Keimyung University)
Im Hyo Gwon (Department of Food Science and Technology, School of Natural Science, Keimyung University)
Kim Hyun Jeong (The Center for Traditional Microorganism Resources, Keimyung University)
Lee In-Seon (The Center for Traditional Microorganism Resources, Keimyung University)
Publication Information
Food Science and Preservation / v.11, no.3, 2004 , pp. 358-363 More about this Journal
Abstract
This study was performed to evaluate the antioxidant effect of Prunus salicina Lindl. cv. Soldam at different growth stages (sample 1-8). Previous studies shows that this fruits possess hematopoiesis effect, osteoporosis prevention, and antimutagenic effects. Prunus salicina Lindl. cv. soldam was picked in every 5 days from the 40th day before harvesting date for marketing in Gimcheon, Gyeongbuk. The fruits at different growth stages (sample 1-8) were extracted with 60$\%$ acetone and chlorophyll in the extracts was removed. In proximate compositions, the contents of moisture of sample 1, 5, 8 were 88.52, 87.01, 83.56$\%$ ; crude ash were 7.12, 3.35, 3.57$\%$ ; crude protein were 7.52, 5.55, 3.85$\%$ ; crude fat contents were 3.20, 0.99, 5.15$\%$, respectively. The contents of total polyphenols and condensed tannin in the acetone extracts from sample 1, 5, 8 were 10.67, 4.05, 2.57$\%$, and 8.36, 3.11, 1.88$\%$, respectively. The antioxidantive effect of acetone extracts from immature fruits showed strong scavenging effect on DPPH free radicals. The RC$_{50}$ values of the extracts from sample 1, 2 were 2.23, 9.70 $\mu$g/mL, respectively while those of butylated hydroxyanisole (BRA) was 5.25 $\mu$g/mL. The extracts from immature fruits showed over 85$\%$ inhibition on peroxidation of linoleic acid at 100 $\mu$g/mL as determined by both the ferric thiocyanate (FTC) and the thiobarbituric acid (TBA) method.
Keywords
Prunus salicina Lindl.cv. soldam; immature fruit; antioxidant effect;
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