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SEASONAL VARIATION OF TOTAL PHENOLIC, ANTIOXIDANT ACTIVITY AND MINERALS IN FRESH TEA SHOOTS (CAMELLIA SINENSIS VAR. SINENSIS)

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dc.contributor.author ERTURK, YASAR
dc.contributor.author ERCISLI, SEZAI
dc.contributor.author SENGUL, MEMNUNE
dc.contributor.author ESER, ZEYNEP
dc.contributor.author HAZNEDAR, AYHAN
dc.contributor.author TURAN, METIN
dc.date.accessioned 2022-11-29T08:36:13Z
dc.date.available 2022-11-29T08:36:13Z
dc.date.issued 2010-01-20
dc.identifier.citation Erturk, Y., Ercisli, S., Sengul, M., Eser, Z., Haznedar, A., & Turan, M. (2010). Seasonal variation of total phenolic, antioxidant activity and minerals in fresh tea shoots (Camellia sinensis var. sinensis). Pak J Pharm Sci, 23(1), 69-74. en_US
dc.identifier.issn 1011-601X
dc.identifier.uri http://142.54.178.187:9060/xmlui/handle/123456789/14228
dc.description.abstract Seasonal variation of total phenolics, antioxidant activity and minerals in fresh tea shoots, consisting of one apical bud and two adjoining leaves sampled from Muradiye, Tuglali, Gundogdu, Enstitu 9, Hamzabey, Hayrat and Pazar 20 clones grown in Eastern Black Sea region in Turkey was investigated during three harvest season (May, July and September) in both 2006 and 2007 years. The total phenolics of all clones were lower in cool months of May in both years (average 33.00-90.27 mg GAE/g dry weight basis). Thereafter, the levels of total phenolics increased throughout the warmer months from July to September. Antioxidant activity determined by β-carotene bleaching assay showed similar trends which increased from 1st harvest (May) to 3rd harvest (September). All clones showed nearly 100% antioxidant activity at 2nd and 3rd harvest season which higher than standard synthetic antioxidant BHA (butylated hydroxyanisole). However, seasonal variation of minerals (N, P, K, Ca, Mg, Na, Fe, Cu, Mn, Zn) showed different results according to clones used. These results seem to suggest that the harvest time is crucial to determining the antioxidant potential of fresh tea shoots. en_US
dc.language.iso en en_US
dc.publisher Karachi:Pakistan Journal of Pharmaceutical Sciences, university of Karachi. en_US
dc.subject Fresh tea en_US
dc.subject Camellia sinensis var. sinensis en_US
dc.subject minerals, phenolics en_US
dc.subject seasonal variation en_US
dc.title SEASONAL VARIATION OF TOTAL PHENOLIC, ANTIOXIDANT ACTIVITY AND MINERALS IN FRESH TEA SHOOTS (CAMELLIA SINENSIS VAR. SINENSIS) en_US
dc.type Article en_US


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