Abstract
ABSTRACT65° Brix serum samples from four concentrated orange juice (COJ) samples, between ‐19 and 30°C, were mildy shear‐thinning fluids with negligible yield stress. The power law model described well the flow data. For one sample, the Powell‐Eyring model also described the data. The activation energy of flow (Ea) for the samples was between 11.2–13.6 kcal/gmole. The power law parameters were determined for a 65°Brix sample as a function of pulp content (0–11%) between −19 and 30°C. At a fixed temperature, the apparent viscosity and the consistency index increased exponentially with pulp content. Ea decreased with increase in pulp content and reached a constant value of about 10.2 kcal/gmole. Data on a high‐pulp (21.2%), 65° Brix, sample indicated the presence of yield stress, particularly at low temperatures. The Mizrahi‐Berk model predicted reliable values of the yield stress.
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.
