Article (Scientific journals)
Supercritical CO2extraction of natural antibacterials from low value weeds and agro-waste
Campalani, Carlotta; Chioggia, Francesco; Amadio, Emanuele et al.
2020In Journal of CO2 Utilization, 40, p. 101198
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Keywords :
Antibacterial; Extraction; Preservatives; Supercritical-CO2; Waste valorisation; Anti-bacterial activity; Antibacterial compounds; Antibacterial properties; Supercritical carbon dioxides; Process Chemistry and Technology
Abstract :
[en] The suitability of supercritical carbon dioxide (scCO2) to extract cosmetic-friendly preservatives from low value weeds and agro-waste was investigated. The essential oils extracted from Humulus Lupulus and Datura Stramonium (leaves and flowers) were analysed in search for potential antibacterial compounds. Their antibacterial activity was evaluated against Escherichia coli in view of using the extracts as preservatives in cosmetic formulations. The composition and antibacterial activity of the scCO2 extracts were compared to the ones obtained by Soxhlet extraction with ethanol. The two methods resulted very different in terms of yields, selectivity, composition, and antibacterial properties of the extracts. In general, scCO2 was better for the recovery of preservative compounds since it led to the selective extraction of volatile oils composed mainly by terpenes, terpenoids, fatty acids, and bitter acids.
Disciplines :
Chemistry
Author, co-author :
Campalani, Carlotta  ;  Université de Liège - ULiège > Département de chimie (sciences) > Center for Integrated Technology and Organic Synthesis ; Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Chioggia, Francesco;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Amadio, Emanuele;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Gallo, Michele;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Rizzolio, Flavio;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy ; Pathology Unit, Centro Di Riferimento Oncologico Di Aviano (CRO), IRCCS, Aviano, Italy
Selva, Maurizio;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Perosa, Alvise;  Department of Molecular Sciences and Nanosystems (DSMN), Ca' Foscari University of Venice, Venezia Mestre, Italy
Language :
English
Title :
Supercritical CO2extraction of natural antibacterials from low value weeds and agro-waste
Publication date :
September 2020
Journal title :
Journal of CO2 Utilization
ISSN :
2212-9820
eISSN :
2212-9839
Publisher :
Elsevier Ltd
Volume :
40
Pages :
101198
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 January 2025

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