Data/hora: 03/06/2024 11:21:10

Provedor de dados: | 111
País: | China
Título: | Modeling of thin layer drying kinetics of grape juice concentrate and quality assessment of developed grape leather
Autores: | Alam, Mohammed Shafiq; Gupta, kalika.
Data: | 2014-06-30
Ano: | 2014
Palavras-chave: | Convective drying; Drying kinetics; Drying models; Grapes; Quality parameters.
Resumo: | Abstract: Studies on modeling of thin layer drying kinetics of grape juice concentrate were conducted using pilot scale convective dryer.  Experiments were conducted in temperature range of 55-750C and drying bed thickness of 3-7 mm, to attain desired moisture content (14±1% db).  Different thin layer drying models like newton, page, logarithmic, two term, two term exponential and midilli models were fitted to the experimental data of convective dehydration and their adequacy of fit was investigated.  All the samples witnessed falling rate period drying irrespective of the selected temperature and thickness.  The effective moisture diffusivity and activation energy were found in range of 7.18-2.56 m2/sec and 26.07-21.59 kJ/mole respectively for 3-7 mm drying bed thickness.  Among the various models investigated, two term exponential model was found to be best fitted model for depicting the drying kinetics of grape juice concentrate.  The quality properties such as total sugars, non enzymatic browning (NEB), protein, titrable acidity, texture (cutting force), color change, water activity and overall acceptability of dried grape leather were determined and data were analyzed as per ANOVA.  The grape leather developed at 550C drying temperature witnessed maximum acceptability irrespective of the drying bed thickness.   Keywords: convective drying, drying kinetics, drying models, grapes, quality parameters
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.cigrjournal.org/index.php/Ejounral/article/view/2822
Editor: | International Commission of Agricultural and Biosystems Engineering

Relação:

http://www.cigrjournal.org/index.php/Ejounral/article/view/2822/1919

http://www.cigrjournal.org/index.php/Ejounral/article/downloadSuppFile/2822/925

Formato: | application/pdf

Fonte:

Agricultural Engineering International: CIGR Journal; Vol 16, No 2 (2014): CIGR Journal; 196-207

1682-1130