Investigations of biofilms formed on silica in contact with aqueous formulations containing laccase and maltodextrin

Implementation of diverse non-centrosymmetric layer concepts for tuning the interface activity of a magnesium alloy

“…Layers on silica surfaces obtained from aqueous mixtures with maltodextrin at a pH value of 4.8 have recently been shown to be resistant to rinsing with water [13]. With respect to the interaction between polished AM50 surfaces and aqueous suspensions containing laccase and maltodextrin at neutral pH values, the Hydrogen Bubble Formation Test indicated a fast formation of adsorbates that delayed the onset of hydrogen bubble formation, as shown in Fig.…”

“…We will investigate the concentration-dependent Fig. 1 Sketches of multilayer systems forming an adhesive joint of identical adherents in the geometry of a lap-shear test specimen (a), and a non-centrosymmetric coating system (b) on a substrate adsorption behavior of a synthetic amphiphilic polymer [12] and the interaction between a magnesium alloy substrate and an aqueous biopolymer mixture containing the nanoparticulate enzyme laccase, similar to the formulation recently described in an interaction with acidic silicon oxide surfaces [13]. Thin films containing biopolymers recently were tested with respect to improving the corrosion resistance of magnesium alloys [14,15].…”

Bio-interfactants as double-sided tapes for graphene oxide

“…The changes in N : C ratios for adsorbed LAC and BSA reported here were also observed else-where. 45,47 The UV-Vis characterisation of a quartz substrate after step 1 also detected changes in the substrate property by the reduction of light transmittance for both bio-interfactants, mainly in the UV waves ( Fig. 2b and c), what is associated with the absorbance of light from these biomolecules.…”

“…The adaptable nature of the selected bio-interfactants allows an essentially physical coupling of GO during the immobilisation on several distinct substrates, such as fused quartz, borosilicate glass, and polyimide (PI). The bio-interfactants used in this study were strategically selected in view of their versatile adsorption under diverse conditions [39][40][41][42][43][44][45][46][47] and their potential key interactions with GO. 35 They play an important role in the dynamics of thermal reduction of GO by allowing chemical selectivity during decomposition and anchoring of the rGO, and resulting in a peculiar rippled topography, following the classification used by Deng et al 48 The goal of this work is to explore the advantages of using bio-interfactants to attach graphene oxide in a coplanar arrangement on surfaces and investigate the processes that allow this nanoassembly configuration before and after the thermal reduction towards graphene.…”