Peer seeds - rich source of antioxidants
2017
Živković, Jelena (Institute for Medicinal Plants Research Dr Josif Pančić, Belgrade (Serbia)) | Šavikin, Katarina (Institute for Medicinal Plants Research Dr Josif Pančić, Belgrade (Serbia))
During fruit processing, a large amount of solid residues such as seeds, remains underutilized. There is a need to find method for use of these by-products and to convert them into products with sig- nificant health, environmental and/or economic benefits. This study provides data about content of lipophilic antioxidants (carotenoids and tocols) and hydrophilic antioxidant potential of seeds of four autochthonous Balkan pear cultivars (Kajzerica, Kalu ¯derka, Turšijara and Karamanka). The content of vitamin E ranged from 20.8 to 41.2 mg/100 g of seeds. In all of the investigated cultivars γ-tocopherol was dominant tocol, followed by α-tocopherol. Concerning carotenoids, their concentration ranged be- tween 0.24 and 0.30 mg/100 g of seeds, with a predominance of lutein. The highest content of vitamin E and carotenoids was recorded in Kajzerica seeds. Antioxidant capacity of investigated samples was evaluated by hydrophilic Trolox Equivalent Antioxidant Capacity (TEAC) assay and it ranged from 2.3 mmol TE/100 g in Turšijara seeds to 14.6 mmol TE/100 g in Kalu ¯derka seeds. Our results provide useful information for potential use of pear seeds.
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