Cracks can form during the freeze-drying of freeze cast ceramic suspensions while attempting to produce dense ceramics. The contain alumina particles dispersed in cyclohexane. rate drying is controlled by pressure and temperature (slow at atmospheric −15°C fast under vacuum slowly increases from −80°C room temperature). X-Ray micro-computed tomography was used characterize internal crack format...

Abstract In this research, the effect of different parameters a convective hot air dryer on mass transfer coefficients thin‐sliced pears in drying stages is analytically and experimentally investigated. According to results, first stage which begins from initial moisture content (MC) 87–57% study, heat coefficient, inlet temperature MC product had highest influence rate product. second (from 57...

The production of Lactobacillus brevis has been improved by changing the medium composition and the physiological conditions. The cellular concentration reaches 8.2 x 10(10) cells/mL in 21 h with a fed-batch technique in MRS medium. Freeze-drying has been used as technology for drying the cells and survival rates have been improved with different additives such as glycerol, CaCO3, and skimmed-m...

In our work we focused on the investigation of two intensive drying methods, i.e. infrared (IR) and microwave (MW) drying, for dairy sludge. During the experiments the effects of IR and MW drying with different power intensities on drying characteristic and biodegradability were examined. Our results has revealed that MW drying was more advantageous for dairy sludge, because the drying time nee...

the main purpose of the present study is to investigate the effect of air drying, freeze drying and vacuum drying methods on viscosity and gelation of lipidium perfoliatum seed gum. results showed that the viscosity values of samples varied from 0.31 to 1.26 pa.s at (shear rate = 12.23 s-1) and control sample gum exhibited the highest viscosity. apparent viscosity was decreased by all of drying...

The deoiled rice bran, industrial waste (paddy husk, potato peels and banana peels) and plasticizers were added to develop pellets after extrusion for their further use in preparing molds (pots) for horticultural use. Pellets were prepared by extrusion technology using glycerol and cashew nut shell liquid as plasticizers and were dried in a chamber with constant air circulation (1.5 m/sec). Dry...

in this study, the possibility of microwave finish drying for two types of dried grapes (natural and sultana) was investigated. the samples were washed in water bath at given temperature ranges (25 and 45 c) for 30 to 60 minutes. after dewatering the samples, they were dried using microwave (at two powers: 270 and 450 w) and hot air convective dryer (at 50 c). water gain (%), effective moistu...