Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice
The rheological behaviour of Yankee pineapple juice was examined for the effect of ultraviolet (UV) irradiation (53.42 mJ/cm2) and compared with untreated juice and a thermally pasteurized (80 °C for 10 min) juice. A rheological test was performed on all types of juice in the temperature range 5 °C...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/30477/1/Rheological%20properties%20of%20ultraviolet.pdf |
| _version_ | 1825947714601353216 |
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| author | Shamsudin, Rosnah Chia, Su Ling Mohd Adzahan, Noranizan Wan Daud, Wan Ramli |
| author_facet | Shamsudin, Rosnah Chia, Su Ling Mohd Adzahan, Noranizan Wan Daud, Wan Ramli |
| author_sort | Shamsudin, Rosnah |
| collection | UPM |
| description | The rheological behaviour of Yankee pineapple juice was examined for the effect of ultraviolet (UV) irradiation (53.42 mJ/cm2) and compared with untreated juice and a thermally pasteurized (80 °C for 10 min) juice. A rheological test was performed on all types of juice in the temperature range 5 °C to 25 °C using a concentric cylinder rheometer at a shear rate range of 10–290 s−1. The comparative analysis found that the best flow curves were described by the Bingham model with an initial shear stress. The entangled pulps in the juices prevented free flow at zero shear rate. There was no significant variation between the plastic viscosities of the untreated and UV-irradiated juice at all temperatures. The activation energy (Ea) of the untreated, UV-irradiated and thermally pasteurized juice was 6.80, 8.19 and 8.50 kJ/mol respectively. |
| first_indexed | 2024-03-06T08:17:41Z |
| format | Article |
| id | upm.eprints-30477 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:17:41Z |
| publishDate | 2013 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-304772016-02-05T07:29:48Z http://psasir.upm.edu.my/id/eprint/30477/ Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice Shamsudin, Rosnah Chia, Su Ling Mohd Adzahan, Noranizan Wan Daud, Wan Ramli The rheological behaviour of Yankee pineapple juice was examined for the effect of ultraviolet (UV) irradiation (53.42 mJ/cm2) and compared with untreated juice and a thermally pasteurized (80 °C for 10 min) juice. A rheological test was performed on all types of juice in the temperature range 5 °C to 25 °C using a concentric cylinder rheometer at a shear rate range of 10–290 s−1. The comparative analysis found that the best flow curves were described by the Bingham model with an initial shear stress. The entangled pulps in the juices prevented free flow at zero shear rate. There was no significant variation between the plastic viscosities of the untreated and UV-irradiated juice at all temperatures. The activation energy (Ea) of the untreated, UV-irradiated and thermally pasteurized juice was 6.80, 8.19 and 8.50 kJ/mol respectively. Elsevier 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/30477/1/Rheological%20properties%20of%20ultraviolet.pdf Shamsudin, Rosnah and Chia, Su Ling and Mohd Adzahan, Noranizan and Wan Daud, Wan Ramli (2013) Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice. Journal of Food Engineering, 116 (2). pp. 548-553. ISSN 0260-8774 10.1016/j.jfoodeng.2012.12.031 |
| spellingShingle | Shamsudin, Rosnah Chia, Su Ling Mohd Adzahan, Noranizan Wan Daud, Wan Ramli Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title | Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title_full | Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title_fullStr | Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title_full_unstemmed | Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title_short | Rheological properties of ultraviolet-irradiated and thermally pasteurized Yankee pineapple juice |
| title_sort | rheological properties of ultraviolet irradiated and thermally pasteurized yankee pineapple juice |
| url | http://psasir.upm.edu.my/id/eprint/30477/1/Rheological%20properties%20of%20ultraviolet.pdf |
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