The effect of harvest time and varieties on total phenolics, antioxidant activity and phenolic compounds of olive fruit and leaves
| Autor: | Mehmet Musa Özcan, Elfadil E. Babiker, Fahad Al-Juhaimi, Oladipupu Q. Adiamo, Kashif Ghafoor, Selin Findik |
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| Přispěvatelé: | Selçuk Üniversitesi, Ziraat Fakültesi, Gıda Mühendisliği Bölümü, Özcan, Mehmet Musa |
| Rok vydání: | 2019 |
| Předmět: |
0303 health sciences
Fruit and leave Antioxidant 030309 nutrition & dietetics medicine.medical_treatment Harvest time Total phenol 04 agricultural and veterinary sciences Biology Olive varieties 040401 food science 03 medical and health sciences chemistry.chemical_compound Horticulture 0404 agricultural biotechnology Antioxidant activity chemistry medicine Original Article Phenolic component Gallic acid HPLC Food Science |
| Zdroj: | J Food Sci Technol |
| ISSN: | 0975-8402 0022-1155 |
| Popis: | WOS: 000468273400005 PubMed: 31168120 The effect of harvest periods on total phenol, antioxidant activity, individual phenolic compounds of fruit and leaves of Tavan Yurei, Memecik, Edremit, Ayvalk and Gemlik olive varieties grown in Turkey were investigated. The highest total phenol (317.70mg/100g and 2657.81mg/100g) were observed in Tavan Yurei olive fruit and Ayvalk leaves harvested in December, respectively. The highest antioxidant activities (83.84%) were determined in Edremit fruit harvested in August and 83.33% in either Edremit olive leaves harvested in November and Tavan Yurei leaves harvested in December. The olive fruit contained gallic acid ranging from 7.18mg/100g (August) to 35.85mg/100g (December) in case of Ayvalk and 2.09mg/100g (November) to 21.62mg/100g (December) in Edremit. Gemlik olives showed higher gallic acid contents compared to the other varieties, however it depended significantly on harvest time in all cases. 3,4-Dihydroxybenzoic acid contents ranged from 33.11mg/100g (October) to 25.17mg/100g (September) in Memecik olives; 12.17mg/100g (August) to 33.11mg/100g (December) in case of Tavan Yurei olives depending on harvest time. The 3,4-dihydroxybenzoic acid contents of Memecik leaves ranged between 122.25mg/100g (September) to 196.58mg/100g (August) and that of Tavan Yurei leaves changed between 99.38mg/100g (November) and 179.90mg/100g (August). The leaves of these two varieties contained significantly (p Deanship of Scientific Research at King Saud UniversityDeanship of Scientific Research at King Saud University [RG-1435-049] The authors would like to extend their sincere appreciation to the Deanship of Scientific Research at King Saud University for its funding the Research Group No. (RG-1435-049). |
| Databáze: | OpenAIRE |
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