Record Details

Thin layer drying of ginger (Zingiber officinale) in a multi-rack type solar tunnel drier

Indian Agricultural Research Journals

View Archive Info
 
 
Field Value
 
Title Thin layer drying of ginger (Zingiber officinale) in a multi-rack type solar tunnel drier
 
Creator JAYASHREE, E
VISVANATHAN, R
 
Subject Drying kinetics; Effective moisture diffusivity; Ginger, Quality; Solar tunnel drying
 
Description Drying of ginger in a multi-rack type solar tunnel drier was studied. The drier consists of a UV-stabilized transparent plastic collector and a drying tunnel. Fresh ginger rhizomes were washed, peeled, spread in single layer in trays and dried from an initial moisture content of 594.01 to final moisture content of 9.89% (db). The temperature, relative humidity and solar intensity received under ambient and inside the solar tunnel drier were recorded. Mathematical modeling for thin layer drying showed that the diffusion approximation model best described the ‘over all’ drying process of ginger in a solar tunnel drier. The ‘over all’ effective moisture diffusivity of ginger in solar tunnel drier was 1.82 × 10-7 m2/s. The essential oil and oleoresin content of solar tunnel dried ginger were 2.0 and 4.5%, respectively and was at par with the quality of sun dried ginger. However, the microbial load of solar tunnel dried ginger was 6.12 log cfu/g where as for sundried ginger it was 6.69 log cfu/g and hence solar tunnel drying was considered superior.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2012-04-09
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/16648
 
Source The Indian Journal of Agricultural Sciences; Vol 82, No 4 (2012)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/16648/8038
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences