Due to its strong aroma and stimulating effect, coffee is the most consumed beverage worldwide, following water. Apart from being a luscious food product, its contents of high phenolic compounds dominated by chlorogenic acid, caffeic acid, and their derivatives have caused coffee to be consumed by individuals at higher ratios and have also encouraged the number of varying research studies for its health-promoting properties. However, it should be noted that these desirable beneficial actions of coffee phenolics are in dynamic behaviors, highly dependent on the roasting process parameters and presence of different types of phenolic compounds in the media. Interactions between coffee phenolics and other phenols might end up with induced or reduced biological activities, which is called synergism or antagonism, respectively. In this paper, bioactive properties such as antioxidant, enzyme inhibition, and chelating power are reviewed in terms of synergism and antagonism of coffee phenolics and other bioactive compounds that are introduced into the matrix, such as cacao, ginger, cinnamon, willow bark, cardamom, and chili pepper. Furthermore, how these properties are affected after in vitro digestion and potential reasons for the outcomes are also briefly discussed with the aim of providing a better understanding of these interactions for the food industry. Revealing the synergistic and antagonistic interactions of the phenolics between coffee and different ingredients in a food matrix and their effects on bioactivity mechanisms is not only important for scientific studies but also for conscious food consumption of individuals.
A substantial amount of fruit byproducts is lost annually due to lack of valorization applications at industrial scale, resulting in loss of valuable nutrients as well as immense economic consequences. Studies conducted clearly show that if appropriate and dependable methods are applied, there is the potential to acquire various components that are currently being obtained through synthetic manufacturing from fruit byproducts mostly regarded as waste and utilize them in not only the food industry, but pharmaceutical and cosmetic industries as well. This review aims to provide a concise summary of the recent studies regarding the fermentation of fruit byproducts and how their antioxidant activity is affected during this process.
Along with the increased knowledge about the positive health effects of food bioactives, the eating habits of many individuals have changed to obtain higher nutritional benefits from foods. Fruits are among the most preferred food materials in this regard. In particular, berry fruits are important sources in the diet in terms of their high nutritional content including vitamins, minerals, and phenolic compounds. Berry fruits have remedial effects on several diseases and these health-promoting impacts are associated with their phenolic compounds which may vary depending on the type and variety of the fruit coupled with other factors including climate, agricultural conditions, etc. Most of the berries have outstanding beneficial roles in many body systems of humans such as gastrointestinal, cardiovascular, immune, and nervous systems. Furthermore, they are effective on some metabolic disorders and several types of cancer. In this review, the health-promoting effects of bioactive compounds in berry fruits are presented and the most recent in vivo, in vitro, and clinical studies are discussed from a food science and nutrition point of view.
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