Abstract
Aronia berries and grape marc, a by-product of producing wine, are rich in antioxidants. The aim of this work was to study the effects of powders and extracts of aronia berries and grape marc addition on physico-chemical quality indicators, microbiological stability in vitro, and antiradical activity of fondant candies, during storage. In order to obtain the maximum antioxidant activity of the aronia berries and grape marc extracts, the Box-Behnken experimental design was used for optimization of the extraction method using sonication technique. During 35 days of storage, the dry mass fraction of all candies obtained significantly increased, which shows that the fondant candies obtained are stable over time. An important role was played by the antioxidant capacity of the plant materials used, whose chemical composition includes a number of biologically active substances which inhibit the development of microorganisms and allow stabilization of the fondant candies.
Highlights
Aronia berries and grape marc, a by-product of producing wine, are rich in antioxidants
In the case of aronia berries, the extracts obtained by sonication with experimental run no. 10 showed the highest antioxidant capacity (55 M TE / 100 g DW, Table 1)
In this study, the powders and hydroalcoholic extracts of aronia berries and the grape marc were incorporated into fondant candies due to their high antioxidant capacity
Summary
Aronia berries and grape marc, a by-product of producing wine, are rich in antioxidants. The aim of this work was to study the effects of powders and extracts of aronia berries and grape marc addition on physicochemical quality indicators, microbiological stability in vitro, and antiradical activity of fondant candies, during storage. An important role was played by the antioxidant capacity of the plant materials used, whose chemical composition includes a number of biologically active substances which inhibit the development of microorganisms and allow stabilization of the fondant candies. The aronia berries extracts were studied intensively for the many important potential health effects [3,4,5]. Grape marc have bioactive components with many biological activities, such as antioxidant, cardioprotective, anti-cancer, anti-inflammatory, anti-aging and antimicrobial properties [9]
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