Effect of high frequency ultrasound pre-treatment on nutritional and technological properties of tomato paste
This study investigates the separate effect of sonication (US, carried out for 5 and 15 min) and thermal treatment (90 °C for 5 min) on nutritional and technological properties of tomato paste. US treatments did not affect the colour parameters and decreased the level of total acidity. Ascorbic acid...
| Veröffentlicht in: | Food science and technology international = Ciencia y tecnologia de los alimentos internacional. - 1998. - 28(2022), 2 vom: 01. März, Seite 180-189 |
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| Weitere Verfasser: | , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Food science and technology international = Ciencia y tecnologia de los alimentos internacional |
| Schlagworte: | Journal Article Tomatoes lycopene bioaccessibility pasteurization texture tomato paste ultrasounds Carotenoids 36-88-4 Lycopene |
| Zusammenfassung: | This study investigates the separate effect of sonication (US, carried out for 5 and 15 min) and thermal treatment (90 °C for 5 min) on nutritional and technological properties of tomato paste. US treatments did not affect the colour parameters and decreased the level of total acidity. Ascorbic acid content was slightly reduced after 5 min US but halved by pasteurization, while total carotenoids (TCC) and lycopene (LC) decreased in non-pasteurized samples after 15 min US. Neither the TCC nor the LC significantly changed in US-pasteurized samples if compared to controls. Microscopic analyses suggested a possible increased bioaccessibility of lycopene in US treated samples due to an enhancement of free lycopene clusters. Viscosity decreased as a consequence of thermal stress, although sonication contributed as well. The present findings suggest that 5 min sonication before pasteurization can enhance the nutritional characteristics of tomato paste, besides improving its texture |
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| Beschreibung: | Date Completed 03.03.2022 Date Revised 07.12.2022 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1532-1738 |
| DOI: | 10.1177/10820132211003788 |