Published in Scientific Papers. Series B, Horticulture, Vol. LXIII, Issue 2
Written by Ana Cornelia BUTCARU, Carmen Gabriela CONSTANTIN, Aurora DOBRIN, Florin STĂNICĂ
In 2015, in the Experimental Field of Faculty of Horticulture within USAMV Bucharest an organic edible rose plantation with three varieties from David Austin collection: 'Crown Princess Margareta’, 'Falstaff’ and 'Brother Cadfael’ was established. Before and after planting, three ameliorative species were sown in seven variants for increasing the soil biological activity. Two types of mulches were applied on the rose rows with special results on the agrochemical parameters. Organic plant protection and fertiliser schemes were used. The petal antioxidant capacity, total phenol and flavonoid content were determined from fresh petals. Part of them were dried at 45°C during four hours and analysed. Three variants of jam were made from each variety, using different ingredients as lemon, sea buckthorn and ginger and analysed. The extracts were subjected to analysis using spectrophotometric methods. Antioxidant capacity was similar in all the three variants. Total phenolic and flavonoid content varied according to the experimental variants, 'Falstaff’ registering the highest amount. Dried petals registered similar biochemical parameters or higher than the fresh or processed ones, drying being recommended as an efficient preserving method.
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