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2014 | 36 | 01 |

Tytuł artykułu

Variation in antioxidant activity and phenolic content in different organs of two Tunisian cultivars of Olea europaea L.

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
This paper reports a comparative study based on the antioxidant compounds, total phenol content and antioxidant activities of leaves, stems and fruits from the main Tunisian cultivars, ‘chetoui’ and ‘chemchali’, grown in two different locations, north and south of Tunisia. The repartition of olive phenolic compounds was organ dependant. Therefore, the HPLC analysis indicated that the olive organs from the northern cultivar had the highest level of hydroxybenzoic acids, hydroxycinnamic acids and flavonoid class; which were less in the southern cultivar. Principal component analysis of the phenolic compounds showed discrimination between methanol extracts of the organs olive. Significant differences (p ˂ 0.05) in the levels of phenols, orthodiphenols and flavonoids were found between cultivars and between organs. Antioxidant activities of the methanolic extract from aerial parts of the two studied cultivars were evaluated using 2,2-diphenyl-1-picrylhydrazyl and 2,2' -azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) assays. In all tests, methanolic extracts of different olive parts showed higher antioxidant activity. These results can be used to discriminate and to characterize the ‘chetoui’ and ‘chemchali’ aerial parts.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

36

Numer

01

Opis fizyczny

p.169-178,fig.,ref.

Twórcy

autor
  • Labolatory of Biochemistry, UR03/ES-08 Human Nutrition and Metabolic Disorder, Faculty of Medicine, Monastir 5019, Tunisia
autor
  • Labolatory of Biochemistry, UR03/ES-08 Human Nutrition and Metabolic Disorder, Faculty of Medicine, Monastir 5019, Tunisia
autor
  • Labolatory of Biochemistry, UR03/ES-08 Human Nutrition and Metabolic Disorder, Faculty of Medicine, Monastir 5019, Tunisia
autor
  • Labolatory of Biochemistry, UR03/ES-08 Human Nutrition and Metabolic Disorder, Faculty of Medicine, Monastir 5019, Tunisia

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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