Effect of microwaves on the in situ hydrodistillation of four different Lamiaceae

Autor: Giuseppe Pignata, Farid Chemat, Laura Orio, Arianna Binello, Silvana Nicola, Giancarlo Cravotto
Přispěvatelé: Universita di Torino, Sécurité et Qualité des Produits d'Origine Végétale (SQPOV), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ALCOTRA project 'Eco-extraction tranfrontaliere'
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Comptes Rendus. Chimie
Comptes Rendus. Chimie, Académie des sciences (Paris), 2014, 17, pp.181-186. ⟨10.1016/j.crci.2013.11.007⟩
Comptes Rendus. Chimie (17), 181-186. (2014)
ISSN: 1631-0748
1878-1543
DOI: 10.1016/j.crci.2013.11.007⟩
Popis: International audience; The development of alternative techniques to classic hydrodistillation (HD) has been prompted because of the drawbacks of the more traditional technique. These drawbacks include: partial thermal degradation, high energy consumption and the fact that it is a time-consuming process. In situ microwave-generated hydrodistillation (MGH) and microwave hydrodiffusion and gravity (MHG) are suitable methods which may improve the preparation of essential oils. In this work, we report a comparison study of HD, MGH and MHG used in the extraction of four plant species cultivated in Piedmont (Italy): lavender, oregano, basil and sage. Both microwave-assisted procedures gave excellent results; in particular the essential oils obtained under MHG were very similar to those obtained with HD. In MGH, the polarity and the physico-chemical properties of the extracted compounds caused bigger differences in essential oil composition.
Databáze: OpenAIRE