A5051018642- Enzyme Catalysis and Immobilization
- Environmental Chemistry and Analysis
- Surfactants and Colloidal Systems
- Minerals Flotation and Separation Techniques
- Analytical Chemistry and Chromatography
- Proteins in Food Systems
- Surface Modification and Superhydrophobicity
- Material Properties and Processing
- Pancreatic function and diabetes
- Water Quality Monitoring and Analysis
- Enzyme Production and Characterization
- Corrosion Behavior and Inhibition
- Microbial Metabolic Engineering and Bioproduction
- Chemistry and Chemical Engineering
- Analytical chemistry methods development
- Pickering emulsions and particle stabilization
- Electrohydrodynamics and Fluid Dynamics
- Listeria monocytogenes in Food Safety
- Advanced oxidation water treatment
- Calcium Carbonate Crystallization and Inhibition
- Food Safety and Hygiene
- Industrial Gas Emission Control
- Vibration and Dynamic Analysis
- Occupational exposure and asthma
- Analytical Chemistry and Sensors
Universidad de Granada
2014-2024
Abstract A commercial lipase (E.C. 3.1.1.3) from Thermomyces lanuginosus was studied in order to assess its interaction with nonionic (Findet ® 1214N/16, Findet 1214N/23 and Glucopon 650) anionic (linear alkylbenzene sulphonate; LAS) surfactants, as well the cleaning action exerted by enzyme on hard surfaces. Nonionic surfactants seem prevent or delay penetration at interface, thereby decreasing activity. Notably, no inhibitory effect of surfactant LAS found, higher conversions being...
Abstract The wetting power of aqueous solutions mixtures an ethoxylated fatty alcohol (AE) and alkylpolyglucoside (AG) (concentration ratios expressed in dry weight AE:AG = 1:0, 4:1, 3:1, 2:1, 1:2, 0:1) has been evaluated. At low concentrations, the show better wettability than pure surfactants. these surfactants is not significantly influenced by water hardness or citric acid concentration. Together with chemical nature surfactants, properties make them especially interesting for...
This study investigates the stability of α-amylase and protease in disinfectant formulations incorporating essential oils (EOs), anionic surfactants (linear alkylbenzene sulfonate), non-ionic (alkylpolyglucosides ethoxylated fatty alcohols), mixtures them, analysing influence composition, temperature, time using shelf-life assays. EOs reduce activity showing first-order deactivation kinetics, were found not to significantly affect its activity. However, increases with presence EOs, it was...
Abstract Wettability of aqueous solutions ethoxylated alcohols (EA), polyoxyethylene glycerin esters (PGE) and mixtures them have been studied. For the EA assayed, best wettability is reached when lowest alkyl chain length number ethylene oxide units in molecule. The for PGE assayed molecule lowest. Aqueous these show a wetting power between those pure surfactants. can be improved by adding with low units. An exception synergistic effect has detected (with 12–14, 11) equal to 2). These...
Abstract Fouling, the accumulation of undesirable material on manufacturing equipment surfaces, poses a pervasive challenge in industrial processes. In food industry, complex interactions among these compounds can give rise to stubborn deposits that deviate from conventional cleaning protocols. this work, forces and removal mechanisms model fouling agents composed mixtures starch, whey protein, lard deposited solid surfaces relevant interest (i.e. stainless steel, aluminium, PTFE) are...
Abstract The granulometric characterization of a pulverulent material requires quantification the particle size and its distribution frequency. From these primary data, mean (mean diameters) is calculated data are adjusted to functions. In this study, most frequent diameters defined calculated, application functions experimental results discussed. It concluded that Rosin‐Rammler function modified Nukiyama‐Tanasawa suitable equations fit differential cumulative undersize frequencies. This...
Abstract The degradation of linear alkylbenzene sulfonates (LAS) in aqueous solutions by ozone has been investigated. ozonation process was performed a stirred tank reactor with recirculation which simulates the clean-in-place used many industrial facilities. gas-liquid mass transfer buffer solution at different temperatures (25–55°C) also studied same device, revealing that decomposition can be considered negligible under experimental conditions assayed. effect initial LAS concentration,...
Abstract The mixture proportions of three surfactants, i.e. an alkylpolyglucoside (APG), ethoxylated fatty alcohol, and amine oxide (AO), were optimized by applying Response Surface Methodology in order to achieve the surfactant ratio that produces highest wetting power. synergistic effect binary samples AO with other surfactants was firstly verified. An improvement this on wettability found ternary mixture. In experimental range analyzed, concentration produced a composition 19.3 % APG,...