Abstract
Orange pulp was extruded using a Brabender laboratory single screw extruder (20:1 L/D), with the objective of modifying the properties of the fibre components. Response surface methodology was used following a central rotational composite, experimental design (5 3). The independent variables studied were: barrel temperatures (83, 100, 125, 150, and 167 °C); moisture contents (22%, 25%, 30%, 35% and 38%) and screw speed (126, 140, 160, 180 and 190 rpm). The feed speed was kept constant (70 g/min). The compression ratio was 3:1, and the diameter of the die 4 mm. The extrusion process decreased insoluble dietary fibre in 39.06% and soluble dietary fibre was increased by 80%. Also, total dietary fibre was decreased as consequence of the production of smaller fragments that would not be completely recovered during the alcoholic precipitation. Increments in contents of total pectin and soluble pectin resulted from the solubilization of pectic substances.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
