BACKGROUND As a potent antimicrobial agent, silver nanostructures have been used in nanosensors and nanomaterial-based assays for the detection of food relevant analytes such as organic molecules, aroma, chemical contaminants, gases and food borne pathogens. In addition silver based nanocomposites act as an antimicrobial for food packaging materials. In this prospective, the food grade melanin ...

The extraction of lutein and β-carotene from spinach (Spinacia oleracea L.) leaves is important to the dietary supplement industry. A Box-Behnken design and response surface methodology (RSM) were used to investigate the effect of process variables on the ultrasound-assisted extraction (UAE) of lutein and β-carotene from spinach. Three independent variables, extraction temperature (°C), extract...

Fused Filament Fabrication (FFF) or Deposition Modelling (FDM) three-dimension (3D) printing are rapid prototyping processes for workpieces. There many factors which have a significant effect on surface quality, including bed temperature, speed, and layer thickness. This empirical study was conducted to determine the relationship between above-mentioned average roughness (Ra). Workpieces of cyl...

The polyurethane membrane is used as a separator either by filtration or adsorption, and this process significantly affected its strength physical condition. We synthesized membranes using red seaweed with Gracilaria sp hydroxyl source. Box-Behnken Design of the Response Surface Methodology (RSM) Software Expert Version 10.0.3.0 three factors (TRL, TDI, Glycerin). F-value 0.42 suggests that les...