STUDIES ON DEHYDRATION OF VEGETABLES
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Date
2004
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, DHARWAD
Abstract
"The studies on dehydration of vegetabels, viz., bitter gourd,
bhendi, curry leaf and palak to standardise the pre-treatments and
drying methods was conducted in the Department of Post-harvest
Technology, Kittur Rani Channamma College of Horticulture, Arabhavi
during the year 2003-2004.
The bitter gourd slices treated with three per cent salt + 0.1 per
cent KMS for one hour and dried in electric drier had maximum recovery
of 12.133 per cent with rehydration ratio of 6.223, total chlorophyll
content of 19.241 mg per 100 g and non-enzymatic browning (OD value)
of 0.350. The organoleptic scores (out of 5.0) for fried bitter gourd slices
were 4.25 for colour and appearance, texture and overall acceptability
and 4.30 for taste.
Good quality dehydrated bhendi were obtained by blanching in
water containing NaHCOa (0.5%) for two minutes and drying in electric
drier or under shade. The recovery of dehydrated slices was 8.233 per
cent with rehydration ratio of 6.133 and OD value of 0.243 for nonen2ymatic
browning. The organoleptic evaluation of rehydrated bhendi
slices scored 4.25 for colour and appearance, 4.00 for texture and 4.25
for overall acceptability.
Dehydrated curry leaf was obtained by pre-treatment with six per
cent brine containing 0.1 per cent KMS for one hour and dr>'ing in an
electric drier with recovery of 11.367 per cent, rehydration ratio of 4.750
and with chlorophyll retention of 131.16 mg per 100 g. The organoleptic
scores for curry leaf powder were 4.067 for colour and appearance, 4.253
for texture, 4.250 for flavour and 4.167 for overall acceptability.
The palak leaves treated with six per cent brine containing 0.1 per
cent KMS and dried in electric drier was found superior with highest
recovery of 9.317 per cent, chlorophyll content of 544.37 mg per 100 g.
The organoleptic scores obtained were 4.250 for colour and appearance,
4.330 for texture and 4.416 for overall acceptability."
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No. of references 56