Abstract
Prunus padus L., is not very popular plant, it is commonly found due to low soil requirements and easy to settle in various places. As for now, concerning food technology, there is no wide application for P. padus. Therefore, the aim of this study is to evaluate the possibility of using bird cherry bark as an ingredient in herbal functional teas. In the first step, the conditions for extraction of the bark were electrochemically optimized. It was proven that the highest content of polyphenols could be found in the sample consisting of chamomile, linden flower, and calendula (7939.8 ± 106.6 mg/100 g dm). In the beta-carotene bleaching test, the highest activity could be spotted for calendula tea (16.7 ± 1.1c%) and chamomile tea (15.0 ± 2.0c%) and concerning the test for linden flower tea without added bark (134.4 ± 15.1b μg ascorbic acid /mL). The property of the tested teas to inhibit cholinesterases was proven. What is more, P. padus bark infusion showed the highest activity of 15.8 ± 1.1d μg neostigmine/mL, for acetylcholinesterases (AChE) inhibition and 21.2 ± 1.0c μg neostigmine/mL for butyrylcholinesterases (BChE). The same tea also showed the highest activity to reduce ions of iron (Fe(III)): 25.3 ± 0.9c μg Trolox /mL and glutathione reductase and glutathione peroxidase inhibition, 87.0 ± 1.1e% and 64.9 ± 2.0d% respectively. The use of P. padus bark may be vital in the preventive care concerning modern-age diseases and allow for the production of a new range of products with distinctive sensory characteristics and functional properties and, at the same time, in combating the spread of P. padus in the farm and forest ecosystem.
Highlights
The teas were prepared by mixing the dry ingredients and weighing 2-gram portions, which were packed in disposable tissue paper teabags
The stage that determines the content of phenolic compounds, as well as the antioxidant activity of infusions, is the extraction process
The electrochemical (SWV: square wave voltammetry) measurement procedure was identical to the one adopted in the previous studies [5,21]
Summary
Sustainability 2021, 13, 3913 more, in the Alps it grows at a higher altitude than any other deciduous tree [1]. This species is highly invasive, tolerant of low and high temperatures, as well as tolerant of many soil types. Dense bird cherry bushes cause displacement of native species and completely prevent their natural regeneration, leading to the complete degradation of forest phytocenoses. The negative impact of P. padus on the natural environment involves the displacement of native species. The intensity of this displacement depends on the original condition of the existing forest community. Despite determining many methods of removal of bird cherry, the most effective one has not yet been discovered
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