Record Details

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

DSpice at Indian Institute of Spices Research

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Field Value
 
Creator JAYASHREE, E
VISVANATHAN, R
 
Date 2013-04-29T16:21:12Z
2013-04-29T16:21:12Z
2012
 
Identifier Indian Journal of Agricultural Sciences 82 (4): 351–55( 2012)
http://hdl.handle.net/123456789/996
 
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
 
Format 420139 bytes
application/pdf
 
Language en
 
Publisher Indian Council of Agricultural Research
 
Subject Drying kinetics
effective moisture diffusivity
Ginger
Quality
Solar tunnel drying
 
Title Thin layer drying of ginger (Zingiber officinale) in a multi-rack type solar tunnel drier