Abstract
In this work, the profiles of phenolics, fiber, pectins, sugars, organic acids and carotenoids, vitamin C, ash, protein and fat contents, as well as antioxidant capacity were compared in fruits, flowers, and bark of Viburnum opulus (VO). Antioxidant capacity was evaluated against ABTS, hydroxyl, peroxyl and superoxide free radicals, and as a reducing power by using in vitro test. The results showed great quantitative differences in the composition of the VO morphological parts tested. Fruits contained the highest concentrations of fat, organic acids, sugars, soluble dietary fiber (10.57 ± 0.54; 7.34 ± 0.06; 32.27 ± 1.25; 6.82 ± 0.38 g/100 g DW, respectively) and carotenoids (2.70 ± 0.07 mg/100 g DW). Whereas, the bark exceeded the remaining parts of the VO in terms of antioxidant capacity, ash (9.32 ± 0.17 g/100 g DW), total (59.34 ± 0.75 g/100 g DW) and insoluble dietary fiber (58.20 ± 0.73 g/100 g DW) contents as well as phenolic compounds (3.98 ± 0.04 g/100 g DW). Among the phenolic compounds quantified in this study, chlorogenic acid and (+)-catechin had the highest concentrations (> 1 g/100 g DW) in the flowers and bark, respectively.
Highlights
Viburnum opulus L. (Adoxaceae), commonly known as European guelder, is called as European cranberrybush, guelder rose, wild guelder rose, cherry-wood, rose elder, crampbark tree and snowball bush, and gilaburu in Turkey [1,2,3]
There are no reports on the basic chemical composition of Viburnum opulus (VO) bark and flowers
The results showed that hydroxycinnamic acids dominated in the VO fruits and flowers (88.26 and 97.23% of total phenolics) while flavanols in VO bark (80.06% of total phenolics)
Summary
Viburnum opulus L. (Adoxaceae), commonly known as European guelder, is called as European cranberrybush, guelder rose, wild guelder rose, cherry-wood, rose elder, crampbark tree and snowball bush, and gilaburu in Turkey [1,2,3]. (Adoxaceae), commonly known as European guelder, is called as European cranberrybush, guelder rose, wild guelder rose, cherry-wood, rose elder, crampbark tree and snowball bush, and gilaburu in Turkey [1,2,3]. It is widespread in Europe, North and Central Asia, and North Africa [2, 4]. Viburnum opulus (VO) is a valuable decorative, medicinal and food plant.
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