Supercritical CO2 extraction of secondary metabolites from Agaricus blazei: experiments and modelling

The mycelium and young fruiting bodies of Agaricus blazei were submitted to supercritical CO2 extraction, in a modified commercial flow apparatus, at temperatures from 40 to 80 ºC, pressures up to 600 bar and CO2 flow-rates from 2.0 to 9.0 g.min-1. The best extraction conditions of secondary metabolites, whereby the degree of solubilization (g extract/100 g of fungi) is the highest, was obtained with pure CO2 at 400 bar, 70 ºC and a CO2 flow rate of 5.7g.min-1. The extract in that conditions were analysed by GC-Ms. In order to increase the extraction yield of secondary metabolites, which are mostly present in glycolipid fractions, a polar compound (ethanol) was used as co-solvent in the proportions of 5 and 10 % (mol/mol). The presence of ethanol increased the yield when compared with the extraction with pure CO2. Moreover, a simple model was applied to the supercritical CO2 extraction of secondary metabolites from Agaricus blazei.Projects: IPL 19/2003, IPL 20 /2003 and IPL 25/2003. Lúcia Casquinha was also support with a grant from Project IPL 20/2003

The potential role of psychosocial rehabilitation in palliative care

© 2018 Royal College of Physicians of EdinburghPalliative care is an approach to incurable and/or severe disease with limited prognosis, aiming to relieve the suffering and improve the quality of life of patients and their families. The existence of psychopathology is common in patients undergoing palliative care, and psychiatric comorbidities, such as depression and anxiety, are frequent and often underdiagnosed. This work constitutes a review of the literature and a reflection on the potential role of psychosocial rehabilitation in mental health in palliative care. Psychosocial rehabilitation may play a role in the mental health of patients undergoing palliative care, contributing to the minimisation of symptoms, support in daily life activities, the improvement of quality of life and the preparation for death.info:eu-repo/semantics/publishedVersio