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The objective of the investigations performed was to assess the antioxidant properties of the seeds and peels of selected fruits. The antioxidant activity as well as total polyphenol and tannin content were determined. The results obtained revealed essential diversities of the analysed parameters among the material examined. The peels were characterized by higher ability to scavenge free radicals and higher polyphenols concentration than the seeds, particularly those of citrus fruits imported to Poland. The highest antioxidant activity was observed in the peels of the Šampion cultivar of apples and white grapes, and in the seeds of the Idared cultivar apples and oranges. Tannins play a meaningful role as antioxidants in grape, apple and goosberry fruits. The peels and seeds of various fruits, which are waste products in fruit and vegetable industry, may be a potential source of antioxidants
In 2007-2009, eighteen gooseberry (Ribes grossularia L.) cultivars were evalu­ated in the growing conditions of central Poland. They were 'White Smith', 'Captiva- tor', 'Hinnonmaki Gelb', 'Hinnonmaki Rot', 'Invicta', 'Kamieniar', 'Krasnoslavian- ski', 'Laskovij', 'Macurines', 'Misorskij', 'Niesluchovski', 'Pax', 'Pixwell', 'Pusz- kinskij', 'Rochus', 'Rolonda', 'Ruskos' and 'Spine Free'. The following cultivar features were assessed: fruit yield (date of ripening, yield, size of fruits and colour of fruit skin), susceptibility to fungal leaf diseases: American powdery mildew Sphaero- theca mors-uvae (Schwein.) Berk. et Curt. and leaf spot Drepanopeziza ribis (Kelb.) Petrak, plant growth (the height and the width of bushes) and plant habit. Cultivars 'Niesluchovski', 'Hinnonmaki Gelb', 'Hinnonmaki Rot' and 'Invicta' were the earli­est to ripen. Fruits of 'Captivator' and 'Spine Free' ripened the latest. The highest fruit yields were harvested from the cultivars 'Pixwell', 'Puszkinskij' and 'Laskovij', and the lowest were from 'Ruskos', 'Pax', 'Hinnonmaki Gelb' and 'Niesluchovski'. The various cultivars differed in the colour of the fruits. They produced green, yel­low, light red, red, and dark red fruit skins. The most susceptible to American pow­dery mildew were 'White Smith' and 'Krasnoslavianski'. The remaining cultivars showed very little infection or they were not infected at all. The leaves of all cultivars were affected by leaf spot in the low or medium range, except for the cultivar 'White Smith', whose leaves were highly infected by this disease. The bushes of the cultivars 'Pixwell', 'Ruskos', 'Laskovij' and 'Misorkij' grew the most vigorously. 'White Smith', 'Niesluchovski' and 'Hinnonmaki Gelb' produced the smallest plants. Culti­vars 'Macurines' and 'Puszkinskij' were characterized by the widest spreading plant habit.
Metodą ASA oznaczono stężenie ołowiu, kadmu, miedzi i cynku w 8 gatunkach warzyw, owocach agrestu i glebach z ogrodów działkowych Lublina - „Pionier" i „Podzamcze". Analiza statystyczna uzyskanych wyników uwzględniała odległość pobrania próbek od jezdni oraz gatunek warzyw.
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