moisture sorption isotherms are useful in food dehydration, storage and packaging. because of the complex food composition, experimental measurements are necessary for prediction of the isotherms. moisture sorption isotherms of thompson seedless raisins were determined at 30, 40, 50, 60, 70 and 80?c, using the standard static gravimetric method developed by the european cooperation project cost...

For the first time, relationship between equilibrium moisture content and water activity is reported for desorption process in pork liver. that purpose, a standardized conductivity hygrometer was used at four different temperatures (0, 10, 30 50 °C) over wide range of (0.999–0.103). Five models frequently found literature (GAB, Oswin, Henderson, Hasley Ratti) were considered purposes describing...

Abundant biomass is a potential energy source. However, it possesses several challenges when considered for applications. Torrefaction, thermal pretreatment process can improve the properties of as This study focused on comparing effect torrefaction operating parameters agricultural and wood wastes fuel. The physiochemical properties, composition, moisture-biomass interaction ash melting behavi...

A case study to investigate the properties of inertia-gravity waves in the upper troposphere/lower stratosphere has been carried out over Northern Germany during the occurrence of an upper tropospheric jet in connection with a poleward Rossby wave breaking event from 17– 19 December 1999. The investigations are based on the evaluation of continuous radar measurements with the OSWIN VHF radar at...

Can the sorption mechanism be proven by fitting an isotherm model to experiment? Such a question arises because (i) multiple models, with different assumptions on mechanisms, often fit experimental equally well, (ii) some models [such as Brunauer–Emmett–Teller (BET) and Guggenheim–Anderson–de Boer (GAB)] isotherms that do not satisfy underlying of model, (iii) (such Oswin Peleg) are empirical e...

canola is a prominent oil seed crop with a very high production potential in iran and the production process of which needs to be optimized. drying is an important part of the processing of the crop with emc values playing a vital role in the process. in this research adsorption and desorption experiments were conducted in an environmental chamber for licord variety of canola. the thin layer ex...

moisture sorption isotherms for pistachio powder were determined by gravimetric method according to cost 90 project at temperatures of 15, 25, 35, and 40oc . maximum hysteresis level in sorption isotherms curve was observed at the range of water activity 0.2-0.7 . on the other hand hysteresis was diminished between adsorption-desorption isotherm curves when temperature reached 40oc. some mathem...

Sabit sıcaklık ve bağıl nem ortamı sağlayan bir kamarada baklanın (Vicia faba L.), sorpsiyon özellikleri; üç farklı sıcaklıkta (25, 35 45 °C) nemi atomizer nemlendirici ile ayarlanarak su aktivitesi değerlerinde (0.1-0.9 aw) incelenmiştir. Elde edilen deneysel verilerden izoterm eğrilerinin, BET buharı izotermleri sınıflandırmasına göre Tip III (J şekilli) özelliğe sahip olduğu bulunmuştur. Bel...

Understanding sorption isotherms is crucial in food science for optimizing the drying processes, enhancing shelf-life of food, and maintaining quality during storage. This study investigated sweet cherry powder (SCP) using static gravimetric method. The experimental water curves lyophilized were determined at 30°C, 40°C, 50°C. then fitted to six isotherm models: Modified GAB, Halsey, Smith, Osw...