Innovative refractance window drying technology
Each trough may have its own conditioned air supply manifold 650 and exhaust manifold 660. For example, multiple troughs share a single conditioned air supply manifold 650 and exhaust manifold 660 as shown in Figure 6. Conditioned air supply manifold 650 and exhaust manifold 660 attach to the open ends of drying chambers 610 and 620.
Refractance Window drying equipment performs continuous drying in 2-6 minutes and utilizes far less energy than comparable drying methods. The findings indicate better water removal with high energy efficiency, Refractance Window Dryer 3.5–5 times lower GHG emission than the thermal drying system, and better vitamin C level retention. Refractance window drying is a promising technology for heat-sensitive high moisture foods .
Dried restructured fruits can be healthy snacks with very attractive sensory characteristics depending on the drying method. Cast-tape drying and conductive multiflash drying are novel technologies with great potential to produce high-quality dried products at an industrial scale in a relatively short time. This study provides important results regarding the most suitable drying processes setup for producing high-quality dried restructured pineapple. In the present study, the effect of Refractance Window drying on the functional properties of chickpea protein isolates was investigated and compared to freeze drying at different pH levels. The functional properties investigated were protein solubility, water and oil holding capacity, emulsifying properties, foaming properties, flocculation and coalescence indices and textural properties.
The total soluble sugars were determined using glucose as the standard curve (20–100 mg mL−1). Traditional lactic acid fermented ready-to-serve black carrot beverage, commonly known as ‘Kanji’ and is helpful in treatment of indigestion, loss of appetite and liver disorders. Hence, the need arises to ensure the microbiological safety of the traditional fermented product by using controlled fermentation techniques and aseptic handling for the large-scale production. Kondareddy R., Sivakumaran N., Radhakrishnan K., Nayak P.K. Performance analysis of solar tunnel dryer with thermal storage and Photovoltaic system for drying star fruit. Zotarelli M.F., Carciofi B.A.M., Laurindo J.B. Effect of process variables on the drying rate of mango pulp by Refractance Window. Tontul I., Ergin F., Eroğlu E., Küçükçetin A., Topuz A. Physical and microbiological properties of yoghurt powder produced by refractance window drying.
Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods. Figure 4.Effect of the drying method on the water activity of guava samples. The RWD technique is affected by various process parameters, including water bath temperature, mylar film thickness, loading rate, sample thickness, relative humidity, and air velocity. Among these, film thickness, air velocity, and temperature are easily controllable primary parameters, while loading rate and sample thickness are secondary parameters. Zotarelli MF, Augusto B, Carcio M, Laurindo JB. Effect of process variables on the drying rate of mango pulp by refractance window.
Effect of drying procedures on the physicochemical properties and antioxidant activities of polysaccharides from Crassostrea gigas. Atmospheric Refractance Window Evaporators keep flavor and aroma locked within your product. Refractance Window dried herbal extracts and fruit and vegetable juice powders have excellent actives for improved nutritional performance. Refractance Window dried vegetable pieces combine just picked flavor with excellent texture. Zotarelli, M.F.; Silva, V.M.; Durigon, A.; Hubinhrt, M.D.; Laurindo, J.B. Production of mango powder by spray drying and cast-tape drying.
We believe that our industrial dryers are not just machines, but solutions that can help transform business. Table 5.Effects of process factors on the drying yields (g/h-m2). And C.I.O.-M.; methodology, R.D.M.-T.; validation, R.D.M.-T.; formal analysis, R.D.M.-T., E.S.-R., C.V.-P. And C.I.O.-M.; investigation, R.D.M.-T., E.S.-R., C.V.-P.
Active mode DSD have been reported to be superior in drying speed and drying quality ; they are also the most suitable for drying large quantities . Ortiz-Jerez and Ochoa-Martínez investigated the drying of pumpkin layers using RW dryers, focusing on the natural convection water flow and forced flow using a pump. The findings of the study indicated that the highest and lowest evaporation rates occurred in drying using the forced flow and natural convection flow, respectively. Table 1.Effect of water temperature on CMC drying kinetics.
The amount of energy conducted and radiated from the Mylar layer change according to the temperature of the heating source, the thickness of the flim, the thickness of the product and the humidity of the product. Pavan MA, Schmidt SJ, Feng H. Water sorption behavior and thermal analysis of freeze-dried, refractance window-dried and hot-air dried acai juice. Ochoa-Martínez CI, Quintero PT, Ayala AA, Ortiz MJ. Drying characteristics of mango slices using the refractance window™ technique. Celli GB, Khattab R, Ghanem A, Brooks MS. Refractance window TM drying of haskap berry—Preliminary results on anthocyanin retention and physicochemical properties. The size of slices, especially the thickness, is an equally important parameter in the drying operation.
Finally, a parametric sensitivity analysis of some key parameters is carried out to study the effects of their variability as affecting moisture loss from the material being dried. Refractance Window™ (RW™) drying is a more recent method for drying heat-sensitive products such as fruit and vegetable purees, slices, juices into powders, flakes or sheets. Retention of color, flavor, aroma, vitamin and antioxidants can be improved in this drying process and product quality can generally be comparable to or, in some instances, better than what can be achieved in freeze drying. The technique is also used to dry pharmaceuticals, nutraceuticals, cosmetic and pigments.
Other authors reported that using low-pressure superheated steam drying helped to improve the porosity degree of the dried products when compared to conventional hot air or vacuum drying. This is possible due to the expansion of the material cells produced by the high-pressure gradient within the product. However, this process is quite slow, so a combined LPSSD with far infrared radiation should be applied in order to accelerate the process.
Refractance Window drying equipment performs continuous drying in 2-6 minutes and utilizes far less energy than comparable drying methods. The findings indicate better water removal with high energy efficiency, Refractance Window Dryer 3.5–5 times lower GHG emission than the thermal drying system, and better vitamin C level retention. Refractance window drying is a promising technology for heat-sensitive high moisture foods .
Dried restructured fruits can be healthy snacks with very attractive sensory characteristics depending on the drying method. Cast-tape drying and conductive multiflash drying are novel technologies with great potential to produce high-quality dried products at an industrial scale in a relatively short time. This study provides important results regarding the most suitable drying processes setup for producing high-quality dried restructured pineapple. In the present study, the effect of Refractance Window drying on the functional properties of chickpea protein isolates was investigated and compared to freeze drying at different pH levels. The functional properties investigated were protein solubility, water and oil holding capacity, emulsifying properties, foaming properties, flocculation and coalescence indices and textural properties.
The total soluble sugars were determined using glucose as the standard curve (20–100 mg mL−1). Traditional lactic acid fermented ready-to-serve black carrot beverage, commonly known as ‘Kanji’ and is helpful in treatment of indigestion, loss of appetite and liver disorders. Hence, the need arises to ensure the microbiological safety of the traditional fermented product by using controlled fermentation techniques and aseptic handling for the large-scale production. Kondareddy R., Sivakumaran N., Radhakrishnan K., Nayak P.K. Performance analysis of solar tunnel dryer with thermal storage and Photovoltaic system for drying star fruit. Zotarelli M.F., Carciofi B.A.M., Laurindo J.B. Effect of process variables on the drying rate of mango pulp by Refractance Window. Tontul I., Ergin F., Eroğlu E., Küçükçetin A., Topuz A. Physical and microbiological properties of yoghurt powder produced by refractance window drying.
Improvement of phytochemical and quality characteristics of Dracocephalum kotschyi by drying methods. Figure 4.Effect of the drying method on the water activity of guava samples. The RWD technique is affected by various process parameters, including water bath temperature, mylar film thickness, loading rate, sample thickness, relative humidity, and air velocity. Among these, film thickness, air velocity, and temperature are easily controllable primary parameters, while loading rate and sample thickness are secondary parameters. Zotarelli MF, Augusto B, Carcio M, Laurindo JB. Effect of process variables on the drying rate of mango pulp by refractance window.
Effect of drying procedures on the physicochemical properties and antioxidant activities of polysaccharides from Crassostrea gigas. Atmospheric Refractance Window Evaporators keep flavor and aroma locked within your product. Refractance Window dried herbal extracts and fruit and vegetable juice powders have excellent actives for improved nutritional performance. Refractance Window dried vegetable pieces combine just picked flavor with excellent texture. Zotarelli, M.F.; Silva, V.M.; Durigon, A.; Hubinhrt, M.D.; Laurindo, J.B. Production of mango powder by spray drying and cast-tape drying.
We believe that our industrial dryers are not just machines, but solutions that can help transform business. Table 5.Effects of process factors on the drying yields (g/h-m2). And C.I.O.-M.; methodology, R.D.M.-T.; validation, R.D.M.-T.; formal analysis, R.D.M.-T., E.S.-R., C.V.-P. And C.I.O.-M.; investigation, R.D.M.-T., E.S.-R., C.V.-P.
Active mode DSD have been reported to be superior in drying speed and drying quality ; they are also the most suitable for drying large quantities . Ortiz-Jerez and Ochoa-Martínez investigated the drying of pumpkin layers using RW dryers, focusing on the natural convection water flow and forced flow using a pump. The findings of the study indicated that the highest and lowest evaporation rates occurred in drying using the forced flow and natural convection flow, respectively. Table 1.Effect of water temperature on CMC drying kinetics.
The amount of energy conducted and radiated from the Mylar layer change according to the temperature of the heating source, the thickness of the flim, the thickness of the product and the humidity of the product. Pavan MA, Schmidt SJ, Feng H. Water sorption behavior and thermal analysis of freeze-dried, refractance window-dried and hot-air dried acai juice. Ochoa-Martínez CI, Quintero PT, Ayala AA, Ortiz MJ. Drying characteristics of mango slices using the refractance window™ technique. Celli GB, Khattab R, Ghanem A, Brooks MS. Refractance window TM drying of haskap berry—Preliminary results on anthocyanin retention and physicochemical properties. The size of slices, especially the thickness, is an equally important parameter in the drying operation.
Finally, a parametric sensitivity analysis of some key parameters is carried out to study the effects of their variability as affecting moisture loss from the material being dried. Refractance Window™ (RW™) drying is a more recent method for drying heat-sensitive products such as fruit and vegetable purees, slices, juices into powders, flakes or sheets. Retention of color, flavor, aroma, vitamin and antioxidants can be improved in this drying process and product quality can generally be comparable to or, in some instances, better than what can be achieved in freeze drying. The technique is also used to dry pharmaceuticals, nutraceuticals, cosmetic and pigments.
Other authors reported that using low-pressure superheated steam drying helped to improve the porosity degree of the dried products when compared to conventional hot air or vacuum drying. This is possible due to the expansion of the material cells produced by the high-pressure gradient within the product. However, this process is quite slow, so a combined LPSSD with far infrared radiation should be applied in order to accelerate the process.
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