Investigation of the removal of cellular water, previously unexamined in freezedrying of microorganisms, and of its direct effect upon cell survival during the drying process have been made using some newly devised technical means. A thin layer of a highly concentrated cell suspension of Escherichia coli in deionized water was frozen in a specially designed ampoule and dried at different temper...

The management of moisture is one the main challenges in anticipating and averting food decay losses during postharvest processing storage. Hence, it imperative to reduce freshly harvested products safe-storage limits order inhibit occurrence diverse biochemical, microbiological other moisture-related deteriorative reactions which can contribute quality degradation. A viable alternative convent...

the objective of this study was to investigate dehydration kinetics of barberry (berberis vulgaris l.) at different drying temperatures (60 ºc, 70 ºc, 80 ºc), air velocities (0.3 m s-1, 0.5 m s-1, 1 m s-1) with two types of pretreatment. drying time and colour quality during dehydration were experimentally determined. barberries were dried from the initial moisture content of 73.44% (w.b.) to t...

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this research, presents mathematical modeling of drying process of aloe vera slices with dimensions of 7×4×0.5±0.1 cm. peeled aloe vera slices with the initial moisture content of 5750% (d.b) were osmosed for 5 hours in nacl solution of 10% and temperature of 40 °c at a constant solution to fruit ratio of 5:1. osmosed and unosmosed aloe vera samples were hot air dried at 55, 70 and 85°c with di...

in this work, the effect of presence of the sodium tripolyphosphate (stpp), as an inorganic salt, on improving the performance of polyamide (pa) thin layer membranes has been studied. characterization analyses confirmed the presence of the salt on the whole surface structure of the thin layer. different salt loadings resulted in different fluxes and cu (ii) rejections. the thin layer containing...

objective: during recent years, opium consumption has increased among iranian diabetic men. the belief that opium consumption can control or even eradicate dm is increasing. this study was conducted to compare the blood sugar, hba1c, lipid profile and the frequency of diabetes complications in male type ii diabetic patient with and without opium consumption. materials and methods: two hundred t...

Uniform drying causes a quasi-two-dimensional cellular crack pattern in a thin layer of paste. In our previous research, we found that such cracks are created in a capillary state, and that the growth speed is determined by the rate of increase in tension in the layer, rather than by the magnitude of the tension itself. In this paper, we present a theoretical investigation of the effects of inc...

In this study, the effects of microwave drying power on drying kinetics, effective moisture diffusivity, and specific energy consumption of olive pomace were studied at three different microwave power levels of 170, 360 and 510 W. Increasing microwave power resulted in a considerable decrease in drying time. The experimental data for moisture loss was converted to moisture ratios and fitted to ...