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)
ALCAZAR ALAY, SYLVIA CAROLINA
Osorio-Tobón J.F.
CARDENAS TORO, FIORELLA PATRICIA
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