THERMAL DRYING TECHNOLOGIES: NEW DEVELOPMENTS AND FUTURE R&amp;D POTENTIAL

Mujumdar, Arun S.; Zong-hua, WU

doi:10.1142/9789812771957_0001

Cited by 10 publications

(4 citation statements)

References 31 publications

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“…The problems of drying are diverse as various food materials with very diverse physical/ chemical properties need to be dried at different scales of production and with very different product quality specifications [13]. The materials preserved by dehydration vary a lot, not only fruits and vegetables to probiotic microorganisms and animal products in the food area, but also other biological materials with important physiological activities, such as human blood cells and insulin.…”

Section: Drying Operationmentioning

confidence: 99%

Sustainable Drying Technologies for the Development of Functional Foods and Preservation of Bioactive Compounds

Betoret¹,

Calabuig-Jiménez²,

Barrera³

et al. 2016

Sustainable Drying Technologies

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Nowadays, the sustainability of a product, a process or a system is assessed according to three dimensions environmental, social and economic. Sustainability challenges occur at all stages in the food system from production through processing, distribution and retailing to consumption and waste disposal. The promotion of organic and local food is not the only way to reach the sustainability. There is other possibility that implies to continue the production hegemony. Increasing research is being focused on the development of healthy, quality and safety food products adapted to consumer's needs and more environment-friendly processes, that is, processes consuming energy more efficiently, generating less waste and emitting less greenhouse effect gases. Drying technology is applied in the food industry not only for preservation but also to manufacture foods with certain characteristics. Drying technology operations need to be precisely controlled and optimized in order to produce a good-quality product with the highest level of nutrient retention and flavor together with microbial safety. This chapter contains detailed information about some measurements taken by the food industry to ensure the supply of bioactive nutrients to as many individuals as possible, assuring the global sustainability. More specifically, the contribution of some drying techniques employed in the development of functional foods to increase the sustainability of the feeding process is discussed.Keywords: sustainability, functional foods, drying, bioactive compounds, structure © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. . IntroductionSustainability means meeting the needs and aspirations of the present without compromising the ability of future generations to meet theirs. As a result of environmental imbalances caused by intensive production and massive use of resources, to achieve food and agricultural sustainability, traditionally, the system has been directed toward promotion of organic and local food, but this is not the only way, as explained in [ ] there is other possibility that implies to continue the production hegemony, emphasizing biotechnology and technological panaceas.Nowadays, the sustainability of a product, a process or a system is assessed according to three dimensions environmental, social and economic. Sustainability challenges occur at all stages in the food system from production through processing, distribution and retailing to consumption and waste disposal. The development of a sustainable agri-food system places responsibilities on both the natural and the social sciences [ ]. While advances in basic and strategic biological research have greatly expanded, the potential to produce nutritious food in an efficient and environmentally sustainable manner, social an...

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Section: Drying Operationmentioning

confidence: 99%

Sustainable Drying Technologies for the Development of Functional Foods and Preservation of Bioactive Compounds

Betoret¹,

Calabuig-Jiménez²,

Barrera³

et al. 2016

Sustainable Drying Technologies

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“…β is the air by-pass rate. 1 h and 2 h are the enthalpies of the inlet air and its corresponding saturate state in the evaporator (kJ/kg). B , V p are air pressure and vapor partial pressure in the air (Pa).…”

Section: A System Processmentioning

confidence: 99%

Optimization Analysis on Air By-Pass Rate in Heat Pump Drying System by Genetic Algorithms

Qian

2010

2010 2nd International Conference on Information Engineering and Computer Science

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The air by-pass rate is one of the important parameters in the heat pump drying system with close air circulation. Considering the characteristics of dehumidifying and energy consumption, the optimization model has been deduced with specific power consumption (SPC) as objective function. On the basis of one example optimized by genetic algorithms, the optimum air bypassing rate and other working parameters have been given. It is useful for heat pump drying system's design and operation.

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“…The process occuring in rotary dryer is very complex and still less well understood. Describe drying process in rotary dryer is described by Fuzzy modeling [16,23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Particle Size Distribution on Ammonium Sulphate Dried in a Rotary Dryer

Susianto¹,

Altway²,

Kuswandi³

et al. 2010

JTS

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   The aim of this work is to study theoretically, by mathematical model development, the effect of particle size distribution on the performance of rotary dryer to dry ammonium sulphate fertilizer assuming plug flow with axial dispersion pattern (PFDA model) for solid particle flow. The mathematical model development was carried out by combining the drying processes model with particle size distribution model. Particle size distribution models used are Rosin-Rommler model and Gamma distribution model. For simplicity, the model of drying processes of solid particles in the rotary dryer was developed by assuming of uniform air conditions (temperature and humidity) along the rotary dryer as in the entry conditions. The resulting differential equations were solved analytically under Matlab 6.1 facility.Since this model, solid hold up, and axial dispersion number were obtained from empirical correlations in the literatures. The drying rate of ammonium sulphate fertilizer in rotary dryer was estimated using isothermal diffusion model with effective diffusivity of moisture in the particle obtained from previous study [2]. Using Gamma function distribution, this research showed that for the value of the coefficient of variance (CV) less than 0.5, particle size distribution does not have significant effect on dryer performance. For the value of CV greater than 0.5, the dryer performance increase (or outlet solid moisture content decrease) with increasing the value of CV. The application of Rosin-Rammler model gives lower prediction of outlet solid moisture content compared to the application of Gamma function model.

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THERMAL DRYING TECHNOLOGIES: NEW DEVELOPMENTS AND FUTURE R&D POTENTIAL

Cited by 10 publications

References 31 publications

Sustainable Drying Technologies for the Development of Functional Foods and Preservation of Bioactive Compounds

Sustainable Drying Technologies for the Development of Functional Foods and Preservation of Bioactive Compounds

Optimization Analysis on Air By-Pass Rate in Heat Pump Drying System by Genetic Algorithms

Effect of Particle Size Distribution on Ammonium Sulphate Dried in a Rotary Dryer

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