Record Details

Quality of dry ginger (Zingiber officinale) by different drying methods

DSpice at Indian Institute of Spices Research

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Field Value
 
Creator JAYASHREE, E
VISVANATHAN, R
ZACHARIAH, JOHN T
 
Date 2013-05-03T20:22:02Z
2013-05-03T20:22:02Z
2012
 
Identifier Journal of Food Science and Technology (2012)
http://hdl.handle.net/123456789/999
 
Description Ginger rhizomes sliced to various lengths of 5,
10, 15, 20, 30, 40, 50 mm and whole rhizomes were dried
from an initial moisture content of 81.3 % to final moisture
content of less than 10 % by various drying methods like
sun drying, solar tunnel drying and cabinet tray drying at
temperatures of 50, 55, 60 and 65 °C. Slicing of ginger
rhizomes significantly reduced the drying time of ginger in
all the drying methods. It was observed that drying of whole
ginger rhizomes under sun took the maximum time (9 days)
followed by solar tunnel drying (8 days). Significant reduction
in essential oil and oleoresin content of dry ginger was
found as the slice length decreased. The important constituents
of ginger essential oil like zingiberene, limonene,
linalool, geraniol and nerolidol as determined using a gas
chromatography was also found to decrease during slicing
and as the drying temperature increased. The pungency
constituents in the oleoresin of ginger like total gingerols
and total shogoals as determined using a reverse phase high
performance liquid chromatography also showed a decreasing
trend on slicing and with the increase in drying temperature.
It was observed from the drying studies that whole
ginger rhizomes dried under sun drying or in a solar tunnel
drier retained the maximum essential oil (13.9 mg/g) and
oleoresin content (45.2 mg/g) of dry ginger. In mechanical
drying, the drying temperature of 60 °C was considered optimum however there was about 12.2 % loss in essential
oil at this temperature
 
Format 353342 bytes
application/pdf
 
Language en
 
Publisher Springer
 
Subject Ginger
Drying methods
Quality
 
Title Quality of dry ginger (Zingiber officinale) by different drying methods