Title
Obtaining anthocyanin-rich extracts from frozen açai (Euterpe oleracea Mart.) pulp using pressurized liquid extraction
Date Issued
01 December 2017
Access level
open access
Resource Type
journal article
Author(s)
Osorio-Tobón J.F.
Barbero G.F.
Meireles M.A.d.A.
Universidade Estadual de Campinas
Universidade Estadual de Campinas
Publisher(s)
Sociedade Brasileira de Ciencia e Tecnologia de Alimentos, SBCTA
Abstract
Açai is considered a functional food, and in addition to being a source of energy and fiber, it is a valuable source of bioactive compounds such as anthocyanins, minerals and fatty acids. In the present work, antioxidant-rich extracts from açai pulp were obtained using pressurized liquid extraction (PLE). The effects of the independent variables, including solvent type (pure ethanol and ethanol/water (50:50 v/v)), citric acid (0 and 0.3%, w/w), pressure (20 and 80 bar) and temperature (30 and 60 °C) were evaluated using a full factorial design. The extraction was affected primarily by the solvent type and the citric acid percentage. The results indicate that the maximum overall yield (X0) was 64 ± 9 (%, d.b.) when the process was performed using ethanol (99.5%) and citric acid (0.3% w/w). The maximum total anthocyanin content and anthocyanin recovered from the raw material were 7 ± 1 (mg anthocyanin/g extract, d.b.) and 11 ± 2 (%, d.b.), respectively.
Start page
48
End page
54
Volume
37
Language
English
OCDE Knowledge area
Ciencias de la salud
Scopus EID
2-s2.0-85035223001
Source
Food Science and Technology (Brazil)
Resource of which it is part
Food Science and Technology (Brazil)
ISSN of the container
01012061
Sources of information: Directorio de Producción Científica Scopus