Rowanberry Nectar—The Effect of Preparation Method, Sweetener Addition, and Storage Condition on Bioactive Compounds
Source abstract
Abstract
Rowanberries (Sorbus aucuparia) are valued for their high content of bioactive compounds. This study examined the effects of sweeteners (sucrose, xylitol, erythritol, steviol glycosides), fruit pulp preparation (fresh vs. steamed), and storage conditions (4 °C and 30 °C, 3 months) on the composition of rowanberry nectars. Polyphenols were quantified using LC-PDA-QTOF/MS and UPLC-PDA-FL, and carotenoids, organic acids, antioxidant capacity (FRAP), and physicochemical properties were also determined. Steaming increased total polyphenol levels in nectars by 13–52%, with the highest values observed in formulations containing steviol glycosides (up to 1833 mg/100 mL). Changes in carotenoid content during storage varied depending on the sweetener type. In steamed nectars with erythritol stored at 4 °C, carotenoid levels remained close to those measured in the corresponding unsweetened steamed sample. Storage influenced turbidity and viscosity in all variants, with the largest viscosity increases recorded in stevia- and erythritol-sweetened nectars. Overall, the combined effects of fruit preparation, sweetener type, and storage determined the final composition and stability of rowanberry nectars.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Phytochemicals and Antioxidant Activities · Fermentation and Sensory Analysis · Botanical Research and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Bioprocess Engineering, Wrocław University of Economics and Business, 118/120 Komandorska Street, 53-345 Wrocław, Poland
Department of Food Technology and Nutrition, Wrocław University of Economics and Business, 53-345 Wrocław, Poland
Department of Fruit, Vegetable and Plant Nutraceutical Technology, Wrocław University of Environmental and Life Sciences, 37 Chełmońskiego Street, 51-630 Wrocław, Poland
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