Fungal spoilage during refrigerated storage is one of the main safety and quality-related problems for dairy products. The effect wheat gluten (WG) methyl cellulose (MC) biopolymers containing natamycin (NA) on growth Aspergillus niger Penicillium roquefortii surface fresh kashar cheese at 10 °C 30 days was investigated. Wrapping A. niger-inoculated with MC films 5–20 mg NA per g resulted in approximately 2-log reductions spore count. Two included into WG sufficient to eliminate cheese....

Summary Antimicrobial agent‐releasing films have been proposed as an effective way of inhibiting chiefly surface spoilage food products. Antifungal activities natamycin (NA), rosemary extract (RE) and NA + RE were tested against Aspergillus niger Penicillium roquefortii with agar disc diffusion assay. NA, also included into biopolymers made from gluten methyl cellulose. Minimum inhibitory concentrations (MIC) in both 2 1 mg per 10 g film solution A. P. , respectively. did not show any...

The aim of this study was to develop alginate and zein films containing natamycin, a natural antifungal agent, in order limit/prevent the mould growth on surface kashar cheeses. were prepared by casting, characterized terms antimicrobial mechanical properties (tensile strength, elongation‐at‐break, elastic modulus), their morphology examined scanning electron microscopy (SEM). Mechanical found be weaker than films. SEM analysis indicated that have more regular structure films, homogenous...

This is, to our knowledge, the first success on solvent-free extrusion of wheat gluten (WG) into high quality films without using NaOH/salicylic acid. It was possible by urea (concentrations: 10, 15 and 20 wt%) in single screw-extruder process. Tensile testing, oxygen permeability, water vapor transmission rate, infrared spectroscopy (IR), confocal laser scanning microscopy (CLSM) protein solubility were used assess properties extrudates. As concentration increased, strength stiffness...

Here, we investigated the structure of natural montmorillonite (MMT) and modified Cloisite C15A (MMT pre-intercalated with a dimethyl-dehydrogenated tallow quaternary ammonium surfactant) nanoclays in wheat gluten–urea matrix order to obtain nanocomposite improved barrier mechanical properties. Small-angle X-ray scattering indicated that characteristic hexagonal closed packed was not found system existed only 3 5 wt % MMT composites. SAXS/WAXS, TGA, water vapor/oxygen properties dispersion...

Understanding bio-based protein polymer structures is important when designing new materials with desirable properties. Here the effect of urea on wheat gluten (WG) structure in WG–urea films was investigated. Small-angle X-ray scattering indicated formation a hexagonal close-packed (HCP) hierarchical materials. The HCP influenced significantly by concentration and processing conditions. interdomain distance dI between objects increased increasing content seemed to be oriented extrusion...

Summary Antifungal biopolymers were prepared by incorporating natamycin (NA) and NA + rosemary extract (RE) into wheat gluten (WG) methyl cellulose (MC) films. Interaction between antimicrobial agents was determined with mid‐infrared spectroscopy scanning electron microscopy (SEM). Water vapour permeability mechanical properties of these films also measured. Mid‐infrared did not indicate any interaction. SEM observations showed that crystallises at high concentrations in biopolymers. There...

In this study, Çubuk 2, Kesikköprü and Asartepe Dam Lake, were investigated. A total of 60 sediment samples collected the concentrations 10 elements (Cu, Pb, Zn, Ni, Mn, Fe, Co, Cr, Al, As) determined. The obtained findings compared to limit values for quality guidelines (SQGs) investigated using assessment methods. results indicate that SQGs revealed Ni As should be emphasised. Toxic unit (TU) showed together constitute 69.95–80.09% toxic effect alone all lakes. addition, Contamination...

Abstract The main physicochemical properties of nanostructured silica/wheat gluten hybrid composites are presented. extraction experiments suggest that the protein phase is intimately encased within silica matrix, with silica–protein interactions driven by hydrogen bonding, as indicated IR spectra. Spectroscopic results also show induces a higher degree constraint wheat despite less aggregation. Moisture diffusion materials investigated combined “desorption/sorption” approach. While...

Today, the removal of increased amount contaminant concentrations in nature such as metals, nanoparticles, has become an essential issue to struggle with. In this paper, both toxic effects non-essential Cd on Lemna minor presence alginate microspheres and metal capacity Cd-exposed L. were investigated. Three test groups constructed: group (L) containing Lemna, (M) microsphere (L + M) Lemna. Five different levels added into these groups. Estimation models constructed estimate capacities...

Introduction.This study was aimed to develop and characterize a biodegradable time temperature indicator (TTI) film by incorporating red beetroot (Beta vulgaris L.) extract, which is rich in betalain pigments, into alginate (A) / polyvinyl alcohol (PVA) blend film.Materials methods.The alginate-PVA blends (APVA) were prepared mixing the 1% PVA 3% A solutions at different A:PVA (v/v) ratios (2:3, 1:1, 3:2).TTI films obtained addition of ascorbic acid extract APVA adjusting pH 9.5 adding 2M...