Title
Exploiting blackcurrant juice press residue in extruded snacks
Date Issued
01 July 2014
Access level
metadata only access
Resource Type
journal article
Author(s)
Mäkilä L.
Laaksonen O.
Vahvaselkä M.
Myllymäki O.
Lehtomäki I.
Laakso S.
Jahreis G.
Jouppila K.
Larmo P.
Yang B.
Kallio H.
University of Helsinki
Publisher(s)
Academic Press
Abstract
Extrusion process was developed to exploit blackcurrant juice press residues from industrial side-streams. Press residues obtained from conventional enzymatic pressing, with high content of fiber and seed oil, and novel non-enzymatic juice processing, with high content of sugars, fruit acids and anthocyanins, were extruded with barley flour, oat flour or oat bran. The recipes consisted of blackcurrant press residues (30%), cereal materials (40%) and potato starch (30%) and small amount of sugar and salt. When compared to enzymatic press residue and oat bran, the novel non-enzymatic press residue extruded with barley or oat flour had higher expansion, lower hardness and density, higher redness (a*), lower pH, and higher contents of fructose, glucose and fruit acids, all contributing positively to liking of texture, appearance, and flavor as well as berry-like experience. These characteristics were obtained with more gentle processing parameters, consisting of a lower total mass flow, screw speed and barrel temperature. Female consumers gave lower ratings in flavor, appearance and overall pleasantness for blackcurrant snacks than males. The study presented a sustainable way of utilizing industrial press residues from different processes of berry juice pressing for production of healthy snacks and breakfast cereals. © 2014 Elsevier Ltd.
Start page
618
End page
627
Volume
57
Issue
2
Language
English
OCDE Knowledge area
Alimentos y bebidas Agricultura
Scopus EID
2-s2.0-84896543088
Source
LWT
ISSN of the container
00236438
Sponsor(s)
We thank Mrs Ute Helms, Department of Nutritional Physiology, Institute of Nutrition, Friedrich Schiller University of Jena, Germany, for the work in laboratory with the fiber and amino acid analyses. We thank also MTT (Piikkiö, Finland), for drying the press residues. This study was funded by Tekes – The Finnish Funding Agency for Technology and Innovation together with Finnish food companies as partners of the project “Black Currant as Unique Source of Functional Ingredients of Food: Novel Processes and Innovations”.
Sources of information: Directorio de Producción Científica Scopus