Chemical composition and bioactive properties of byproducts from two different kiwi varieties

Publication date: Available online 31 October 2019Source: Food Research InternationalAuthor(s): Murilo Dias, Cristina Caleja, Carla Pereira, Ricardo C. Calhelha, Marina Kostic, Marina Sokovic, Débora Tavares, Ilton José Baraldi, Lillian Barros, Isabel C.F.R. FerreiraAbstractKiwis are an example of fruits with excellent bioactive properties worldwide appreciated and consumed generating tons of waste. Thus, the objective of this work was to compare two varieties of kiwi: Actinidia deliciosa cv. “Hayward” (green) and Actinidia spp. (red) regarding the nutritional value of their pulps, chemical composition and bioactivities of each pulp and peel. The results revealed that pulps have a high water content and low amount of other macronutrients. Both parts of red kiwi presented the highest tocopherols content and red kiwi pulp presented the highest content in ascorbic acid. In general, the peels exhibited the highest antioxidant activity and green kiwi peels showed cytotoxicity and anti-inflammatory activity, which could be related to its higher content in phenolic compounds, especially B-type (epi)catechin dimer. Therefore, kiwi components currently underutilized may be indicated as a source of natural functionalizing ingredients with several benefits for human health.Graphical abstractKiwi peels currently underutilized may be indicated as a source of natural functionalizing ingredients with several benefits for human health.
Source: Food Research International - Category: Food Science Source Type: research