Artemisia arborescens L essential oil loaded beads: Preparation and characterization

Abstract

The purpose of this work was to prepare sodium alginate beads as a device for the controlled release of. essential oil for oral administration as an antiviral agent. Different formulations were prepared with sodium alginate as a natural polymer and calcium chloride or glutaraldehyde as a crosslinking agent. Loading capacities of between 86% and 100% were obtained in freshly prepared beads by changing exposure time to the cross-linking agent. Drying of the calcium alginate beads caused only a slight decrease in the loading efficiency. The surface morphology of the different bead formulations were studied using scanning electron microscopy (SEM). Stability studies over a 3-month period showed that glutaraldehyde reacted with some components of Artemisia arborescens L essential oil, changing its composition. Calcium alginate beads showed an in vitro controlled release of the essential oil for the investigated 24 hours, while the use of glutaraldehyde as a cross-linking agent was found not appropriate because of the interactions with azulene derivatives and the low degree of matrix cross-linkage.

Artemisia arborescens L essential oil-loaded solid lipid nanoparticles for potential agricultural application: Preparation and characterization

“…18 Artemisia arborescens L essential oil also demonstrated pesticidal activity against Aphis gossipy (a pest of citrus fruits), adult and young Bemisia tabaci, and Lymantria dispar L (pest of Quercus suber) and was efficiently encapsulated in cross-linked alginate beads for a controlled release into the soil. 19 Obtained data showed the possibility of using this natural product as an ecological pesticide in both conventional and organic agriculture and in domestic and public use (eg, city garden).…”

Coriander (Coriandrum sativum L.) essential oil: its antibacterial activity and mode of action evaluated by flow cytometry

“…The application of this essential oil may be further enhanced by the formulation of delivery systems capable of improving its performance. Despite the fact that some of these formulations have shown a poor release of the essential oil encapsulated (Lai et al, 2007a), other carrier systems based on chitosan or solid lipid nanoparticles enable an effective release of the essential oil from the carrier system with antimicrobial activities similar to or even higher than that of the essential oil alone (Lai et al, 2007b;São Pedro et al, 2009). …”

Chemical Composition and Antibacterial Potential of Artemisia arborescens L. Essential Oil

“…The studies carried out on this species were mainly concerned about its phytochemical characteristics [1,29,30,32,33,39], but other aspects have been also considered, such as its genomics [19], its antiviral [43], antioxidant [11], anti-mycoplasmal [3] and allelochemical properties [14]. However, to our knowledge, no studies have been carried out on the antibacterial properties of EOs of this species.…”