Acai (Euterpe oleracea Mart.) Beverage Preserves Antioxidant and Endothelial Protective Properties Against Inflammatory Injuries in vitro After Pasteurization and Storage Conference Paper uri icon

abstract

  • Aa polyphenolics (Euterpe oleracea Mart.) have been known to exhibit rapid anthocyanin degradation during thermal processing that may adversely impact the quality and potential health benefits, while nonpigmented polyphenolics exhibit excellent stability. The objective of this study was to determine the effects of pasteurization and elevated storage temperatures on phytochemical stability and antiinflammatory activities in the aa beverage. Polyphenolic extracts were assessed before and after aseptic processing. In addition, the aseptic processed samples were held at either 30 or 40C for either 30 or 60 days. Polyphenolic isolates were prepared for antiinflammatory assessment in human umbilical vascular endothelial cells. Aseptic processing had a minor effect on the polyphenolic concentration. The amount of total polyphenolics was not significantly changed after the storage. However, storage at the high temperature decreased the monomeric anthocyanin concentration and increased the amount of polymeric forms. When comparing extracts before and after pasteurization, several biomarkers for inflammation were reduced more by extracts from the processed beverage. The extracts stored at 40C for 30 days total extracts significantly reduced the mRNA expression of biomarkers for inflammation, including VCAM1, IL6, IL1 and NFB. Results indicate that the antiinflammatory properties of aa may be less dependent on monomeric anthocyanins, and the targeted application of processing to polyphenolcontaining food products may be beneficial in inflammatory diseases.

published proceedings

  • FASEB JOURNAL

author list (cited authors)

  • Azevedo, L., Garcia, G., Kim, H., Mertens-Talcott, S., & Talcott, S.

citation count

  • 0

complete list of authors

  • Azevedo, Luciana||Garcia, Gustavo||Kim, Hyemee||Mertensā€Talcott, Susanne||Talcott, Stephen

publication date

  • April 2015

publisher