The aim of this work was to study the potential application edible films obtained by complex coacervation promoted electrostatic interactions between positively charged chitosan (CH) 3% (w/w) and negatively whey protein isolate (WPI) (w/w). Preliminary assays turbidimetry were made in order find optimal CH-to-WPI mass ratio for coacervation. maximum turbidity CH:WPI 0.1:1 dispersions CH/WPI (bo...

Edible coatings were prepared with 1% (w/v) chitosan (CH) incorporated 0.05%, 0.25%, or 0.5% tea seed oil (TSO). The physicochemical properties and antifungal ability on Botrytis cinerea (B. cinerea) of the films investigated. CH TSO applied to preserve pears (Pyrus pyrifolia Nakai) then fungal decay, respiration rate, other characters determined throughout storage at 25 °C 85 ± 5% relative hum...

Mucilage of Opuntia ficus-indica (OFI) was extracted and characterized by its composition and molecular weight distribution. Mucilage film-forming dispersions were prepared under different pHs (3, 4, 5.6, 7, and 8) and calcium concentration (0% and 30% of CaCl(2), with respect to mucilage's weight), and their particle size determined. Mucilage films with and without calcium (MFCa and MF, respec...

The nonbiodegradable and nonrenewable nature of plastic packaging has led to a renewed interest in packaging materials based on bio-nanocomposites (biopolymer matrix reinforced with nanoparticles such as layered silicates). Bio-nanocomposite films based on soy protein isolate (SPI) and modified montmorillonite (MMT) were prepared using melt extrusion. The effect of different type (Cloisite 20A ...

BACKGROUND Microbial activity is a primary cause of deterioration in many foods and is often responsible for reduced quality and safety. Food-borne illnesses associated with E. coli O157:H7, S. aureus, S. enteritidis and L. monocytogenes are a major public health concern throughout the world. A number of methods have been employed to control or prevent the growth of these microorganisms in food...

Aerosol optical properties were obtained from a CIMEL sunphotometer of the Aerosol Robotic Network at the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL). SACOL is located over the Loess Plateau of the Northwestern China. The observed data are analyzed for the period of August 2006–October 2008. We find that aerosol optical depths (AODs) have a pronounced annual cycl...

This study investigates the effects of incorporating green and chemical magnetic iron oxide nanoparticles (GMIONPs CMIONPs, respectively) into poly(ε-caprolactone) (PCL) nanofibrous membranes on their physicochemical, mechanical, morphological, functional properties. The evaluates physicochemical optical properties using water contact angle (WCA), vapor permeability (WVP), brightness, color det...

the effects of nano titanium dioxide incorporation were investigated on the water vapor permeability, oxygen permeability, and antimicrobial properties of bovine gelatin films. the nano tio2 (tio2- n) was homogenized by sonication and incorporated into bovine gelatin solutions at different concentrations (e.g. 1, 2, 3, and 5% w/w of dried gelatin). the permeability of the films to water vapor a...

barrier properties are one of the most important factors in the edible film. in this study, edible mungbean films were prepared containing (0%, 15%, 30%, 45%) concentrations of rosemary aqueous extract. then the effect of rosemary was investigated on colorimetric and barrier properties (water vapor permeability, oxygen permeability). rosemary extract increased the absorption of color in the vis...