Edible berries are becoming increasingly popular to consume in fresh, dried, frozen or processed forms due to their high content and wide diversity of bioactive compounds with considerable health benefits. Among the wide variety of phytochemicals found in berries are stilbenes, which demonstrate a broad range of biological and pharmacological activities. Their content depends on many factors, including the cultivar, ripening stage, climatic conditions, agronomic management, storage conditions and postharvest management. However, the application of various abiotic and biotic external stimuli could be a strategy for increasing the production of stilbenes in edible berries. To date, several different elicitors, as inducers of plant secondary metabolite stilbenes, have been applied in different studies. This review focuses on the isolation and identification of stilbenes from edible berries and presents the influence of different external stimuli on their profile in grapes.
Ensuring food safety for people suffering fromvarious intolerances faces serious threats posed by allergenswhich have become a challenge for food manufacturers andmass caterers. These businesses are required to developand implement appropriate programs to manage allergenspresent in their sites. The purpose of this paper was to analyzethe actions taken by food manufacturers with respect tosubstances and products causing allergies or food intolerancesin the context of providing consumers with a safe, properlylabeled product. To achieve the objective of this study, a dataanalysis and synthesis method was employed based on requirementsdefined in obligatory and non-obligatory standardsfor food safety assurance and management in the foodproduction sector. In summary, as regards allergen management,the companies must create appropriate conditions andtake adequate measures (including the analysis of risks due tointentional and adventitious presence of allergens in food, andthe implementation of appropriate preventive actions). Solutionsprovided in the mandatory standards, mainly GHP andHACCP, as well as in non-mandatory standards, such as ISO22000, BRC, IFS and SQF, may be helpful in the managementof substances causing allergies or intolerances.
Background. Chokeberry pomace is a valuable by-product of fruit processing because of its high levels of phenolic compounds and anthocyanins. The study was aimed to optimise chokeberry pomace extraction of total phenolic content, total anthocyanin content and antioxidant activity using response surface methodology. Material and methods. Response surface methodology was used to evaluate the effect of the concentration of ethanol (in the range of 60-96%) and sonication time (from 10 to 30 min) as independent variables on total phenolic content, antioxidant capacity and total anthocyanin content as the response functions. Results. The results showed that ethanol concentration, but not sonication time, had a significant influence on total phenolic content, antioxidant activity and total anthocyanin content. The optimal extraction conditions for total phenolic content (188.5 mg GAE/g DM) and antioxidant capacity (49.2 mM Tr/100 g DM) were 60% ethanol and 20 min sonication time. The optimal conditions in the case of total anthocyanin content (89.3 mg C3GE/g) were an 65% ethanol concentration and 13 min sonication time.
Conclusion.The development of optimal extraction parameters should allow food producers to use efficient, cost-effective and environmentally friendly technology to isolate biologically active molecules from chokeberry pomace, while the selected extract could be a component of health-promoting bioactive products.
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