Ohmic heating as a promising technique for extraction of herbal essential oils: Understanding mechanisms, recent findings, and associated challenges.
Adv Food Nutr Res
; 91: 227-273, 2020.
Article
em En
| MEDLINE
| ID: mdl-32035597
ABSTRACT
The applicability of ohmic heating, as a volumetric heating technique, has been explored in various sectors of the food industry. The use of ohmic heating for essential oil extraction is among its emerging applications. This chapter overviews the recent progress in this area of research, discusses the mechanisms involved in ohmic-based essential oil extraction processes, explains the effective process parameters, highlights their benefits, and explains the considerations to address the obstacles to industrial implementation. Ohmic-assisted hydrodistillation (OAHD) and ohmic-accelerated steam distillation (OASD) systems were proposed as alternatives to conventional hydrodistillation and steam distillation, respectively. These techniques have successfully extracted essential oils from several aromatic plants (e.g., thyme, peppermint, citronella, and lavender). Both OAHD and OASD possess a number of benefits, such as reducing the extraction time and energy consumption, compared to classical extraction methods. However, these techniques are in their infancy and further economic and upscaling studies are required for their industrial adaptation.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Óleos de Plantas
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Óleos Voláteis
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Técnicas Eletroquímicas
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Fracionamento Químico
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Temperatura Alta
Tipo de estudo:
Diagnostic_studies
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Risk_factors_studies
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article