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http://dx.doi.org/10.11625/KJOA.2015.23.4.999

Seasonal Changes of Total Phenolic Compounds and Antioxidant Activity in Leaves of Organic Apricot, Filbert, Mulberry, Persimmon and Pomegranate Trees  

Kim, Wol-Soo (전남대학교 원예학과)
Seo, Min-Soo (전남대학교 원예학과)
Jo, Jung-An (전남대학교 원예학과)
Publication Information
Korean Journal of Organic Agriculture / v.23, no.4, 2015 , pp. 999-1010 More about this Journal
Abstract
Total phenolic compounds and antioxidant activity were investigated in leaves of organic apricot, filbert, mulberry, persimmon, and pomegranate trees during growing season. Total phenolic compounds and antioxidant activity in leaves of organic apricot and filbert trees were gradually increased from May to June, attained peak in July, thereafter decreased to minimum level in October. In leaves of organic mulberry tree total phenolic compounds and antioxidant activity were simultaneously increased from May to June and sharply decrease to very low level. The leaves of organic persimmon trees showed very high level of total phenolic compounds and antioxidant activity from May to June, thereafter gradually decrease to October. The leaves of organic pomegranate trees showed extraordinarily highest level of total phenolic compounds among five fruit trees investigated in the study during growing stages, as well as maintained higher than 91 percent of antioxidant activity from May to October. Correlation coefficients between total phenolic compound and antioxidant activity of the leaves of five organic trees were the highest in mulberry leaves, and then persimmon, filbert, apricot, and pomegranate, respectively. However, correlation coefficients between total phenolic compound and antioxidant activity of the leaves of organic pomegranate were very low level, and not significant in their relationship.
Keywords
Prunus armeniaca; Corylus heterophylla; Morus alba; Diospyros kaki; Punica granatum;
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