Toxicological and bioactivity evaluation of blackcurrant press cake, sea buckthorn leaves and bark from Scots pine and Norway spruce extracts under a green integrated approach
Pap, N., Reshamwala, D., Korpinen, R., Kilpeläinen, P., Fidelis, M., Furtado, M. M., Sant’Ana, A. S., Wen, M., Zhang, L., Hellström, J., Marnilla, P., Mattila, P., Sarjala, T., Yang, B., dos Santos Lima, A., Azevedo, L., Marjomäki, V., & Granato, D. (2021). Toxicological and bioactivity evaluation of blackcurrant press cake, sea buckthorn leaves and bark from Scots pine and Norway spruce extracts under a green integrated approach. Food and Chemical Toxicology, 153, Article 112284. https://doi.org/10.1016/j.fct.2021.112284
Published inFood and Chemical Toxicology
© 2021 The Authors. Published by Elsevier Ltd.
Aqueous extracts from blackcurrant press cake (BC), Norway spruce bark (NS), Scots pine bark (SP), and sea buckthorn leaves (SB) were obtained using maceration and pressurized hot water and tested for their bioactivities. Maceration provided the extraction of higher dry matter contents, including total phenolics (TPC), anthocyanins, and condensed tannins, which also impacted higher antioxidant activity. NS and SB extracts presented the highest mean values of TPC and antioxidant activity. Individually, NS extract presented high contents of proanthocyanidins, resveratrol, and some phenolic acids. In contrast, SB contained a high concentration of ellagitannins, ellagic acid, and quercetin, explaining the antioxidant activity and antibacterial effects. SP and BC extracts had the lowest TPC and antioxidant activity. However, BC had strong antiviral efficacy, whereas SP can be considered a potential ingredient to inhibit α-amylase. Except for BC, the other extracts decreased reactive oxygen species (ROS) generation in HCT8 and A549 cells. Extracts did not inhibit the production of TNF-alpha in lipopolysaccharide-stimulated THP-1 macrophages but inhibited the ROS generation during the THP-1 cell respiratory burst. The recovery of antioxidant compounds from these by-products is incentivized for high value-added applications. ...
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Additional information about fundingThe authors thank Luke for providing funds for this project (Power-Xtract – 41007–00185200). Sant’Ana and Furtado thank the support of Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Finance Code 001) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (302763/2014-7, and 305804/2017-0).
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