Extended-spectrum beta-lactamase- and carbapenemase-producing isolates causing hospital- and community-acquired infections in Tunisia (2001-2019): expansion of CTX-M-15-C2 and CTX-M-27-C1 ST131 subclades.

Unlabelled: The prevalence of infections caused by extended-spectrum beta-lactamase (ESBL)-producing (ESBL-EC) and carbapenemase-producing (CP-EC) is increasing worldwide. We investigated the epidemiology of ESBL-EC and CP-EC causing hospital-acquired (HA) infections in a large teaching hospital in Tunisia over the last two decades and compared it with a collection of 107 community-acquired (CA) ESBL-EC isolates. Between 2001 and 2019, the incidence of HA ESBL-EC increased significantly from 0.

Comparative Study of Oil Quality and Aroma Profiles from Tunisian Olive Cultivars Growing in Saharian Oasis Using Chemometric Analysis.

Aroma profile, oxidative stability and quality parameters of virgin olive oil from four cultivars (Chemlali, Chetoui, Koroneiki and Rjim), grown in Rjim Maatoug oasis in southern of Tunisia, were studied for the first time. The olive oil samples were obtained during maturation from a crop season (2012-2013). The results showed the quality parameters, i.

Chemical composition and direct electrochemical oxidation of table olive processing wastewater using high oxidation power anodes.

Table olive processing wastewater (TOW) is a notoriously polluting due to its high organic and phenol content. To reduce them, an electrochemical process has been studied for the treatment of this effluent. Experiments were performed with a cell equipped with lead dioxide (PbO) or boron-doped diamond (BDD) as anode and platinum as cathode, where Table Olive Wastewater (TOW) were destroyed by hydroxyl radicals formed at the anode surface from water oxidation.

Application of electrochemical technology for removing petroleum hydrocarbons from produced water using lead dioxide and boron-doped diamond electrodes.

Although diverse methods exist for treating polluted water, the most promising and innovating technology is the electrochemical remediation process. This paper presents the anodic oxidation of real produced water (PW), generated by the petroleum exploration of the Petrobras plant-Tunisia. Experiments were conducted at different current densities (30, 50 and 100 mA cm(-2)) using the lead dioxide supported on tantalum (Ta/PbO2) and boron-doped diamond (BDD) anodes in an electrolytic batch cell.

Synthesis of 3-O-methylgallic acid a powerful antioxidant by electrochemical conversion of syringic acid.

Background: A kinetic study of the electrochemical oxidation of syringic acid (3,5-dimethoxy-4-hydroxybenzoic acid) by cyclic voltammetry at treated gold disk was combined with results of electrolyses at Ta/PbO2 anode in order to convert it into potentially high-added-value product.

Methods: The electrochemical oxidation of syringic acid was carried out in order to convert this compound to 3-O-methylgallic acid. This latter was identified by mass spectrophotometry using LC-MS/MS apparatus.