dc.creator | Miano, Alberto Claudio | |
dc.creator | Lindsay Rojas, Meliza | |
dc.creator | Pedro E.D., Augusto | |
dc.date.accessioned | 2023-10-16T18:12:37Z | |
dc.date.accessioned | 2024-05-03T19:51:22Z | |
dc.date.available | 2023-10-16T18:12:37Z | |
dc.date.available | 2024-05-03T19:51:22Z | |
dc.date.created | 2023-10-16T18:12:37Z | |
dc.date.issued | 2021-10-08 | |
dc.identifier | Miano, A. C., Lindsay, M., & Pedro, A. (2021). Combining ultrasound, vacuum and/or ethanol as pretreatments to the convective drying of celery slices. Ultrasonics Sonochemistry, 79, 105779. https://doi.org/10.1016/j.ultsonch.2021.105779 | |
dc.identifier | . | |
dc.identifier | https://hdl.handle.net/11537/34470 | |
dc.identifier | Ultrasonics Sonochemistry | |
dc.identifier | https://doi.org/10.1016/j.ultsonch.2021.105779 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9281306 | |
dc.description.abstract | This work studied three emerging approaches to improve the convective drying (50 ◦C, 0.8 m/s) of celery. Celery
slices of 2 mm thick were pretreated for 5 min using ultrasound (32 W/L, 40 kHz), vacuum (75 kPa vacuum
pressure) and ethanol (99.8% v/v, as drying accelerator) applied individually or in combination. To evaluate
individual effects of ultrasound and vacuum, the treatments were also performed with distilled water or air
medium, respectively. Moreover, the cavitational level was characterized in each condition. Drying kinetics was
evaluated tending into account the drying time required by each treatment and the Page’s model parameters. In
addition, microstructural effects and shrinkage were evaluated. As results, ethanol combined with ultrasound
significantly improved drying kinetics reducing drying time by around 38%. However, vacuum pretreatment did
not affect drying kinetics even in combination with ethanol and/or ultrasound. Microstructural evaluation did
not evidence cell disruption, suggesting changes in intercellular spaces, pores and/or cell wall permeability. The
use of ethanol and vacuum showed a greater effect on shrinkage after pretreatment and after drying, respectively. In conclusion, at the studied conditions, the drying acceleration by vacuum and ultrasound is lower
compared to the effect produced using ethanol. | |
dc.language | spa | |
dc.publisher | Elsevier | |
dc.publisher | PE | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/3.0/us/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.rights | Atribución-NoComercial-CompartirIgual 3.0 Estados Unidos de América | |
dc.source | Universidad Privada del Norte | |
dc.source | Repositorio Institucional - UPN | |
dc.subject | Ultrasound | |
dc.subject | Ethanol pretreatment | |
dc.subject | Dehydration | |
dc.subject | Marangoni effect | |
dc.subject | Convective drying | |
dc.title | Combining ultrasound, vacuum and/or ethanol as pretreatments to the convective drying of celery slices | |
dc.type | info:eu-repo/semantics/article | |