Singh Et Al

Singh et al

Greener Journal of  Agricultural Sciences Vol. 4 (6), pp. 281-287, July 2014.

 ISSN: 2276-7770 

Research Paper

Manuscript Number: 040314174

DOI: http://dx.doi.org/10.15580/GJAS.2014.6.040314174

The Drying Characteristics of Amaranth Leaves
under Greenhouse Type Solar Dryer and Open Sun

 

Papu Singh*1,
Sweta Singh1, B.R. Singh2, Jaivir Singh3 and 
S.K.
Singh4

 

1Ph. D. Scholar, Department of Agricultural
Engineering and Food Technology, College of Agriculture, S.V.P. University of
Agriculture & Technology, Meerut-250110 (U.P.) India.   

2Professor & Ex-HOD, Department of
Agricultural Engineering and Food Technology, College of Agriculture, S.V.P.
University of Agriculture & Technology, Meerut-250110 (U.P.) India.

3Assistant Professor,Department of
Agricultural Engineering and Food Technology, College of Agriculture,            S.V.P. University of Agriculture &
Technology, Meerut-250110 (U.P.) India.

4Division of Farm Machinery and Post Harvest
Technology,
Indian Grassland and
Fodder Research Institute, Jhansi (U.P.).

*Corresponding
Author’s Email: papusinghujjwal @gmail .com
/ psingh84svp @gmail .com,

Phone: 01234 273028, Mobile: 09759678365

Abstract:

The
dehydrated leafy vegetables have the potential to become an important product
because of relatively inexpensive, easily and quickly cookable and rich in
several nutrients which are essential for human health. The proper drying
techniques are the most important aspect of leafy vegetable preservation. The
use of solar dryer helps to reduce the losses and improves the quality of
product. A Greenhouse type solar dryer was used and the experiments were
conducted to develop dehydrated amaranth leaves so as to enhance the
availability of amaranth leaves during off season. In the present study, fresh
amaranth leaves were pretreated in two ways viz; (i) dipping in a solution
(leaves to water 1:5 (w/w)) containing 0.1% Mgcl2 + 0.1% NaHCO3
+ 2% KMS in distilled water for 15 minute and (ii) blanching in boiling water
containing 3% sodium bisulphate for 2 min. The leaves were dried at 1.5, 2.0
and 2.5 kg/m2 loading density, under greenhouse type solar dryer and
in open sun. Untreated amaranth leaves were also dried as control samples. It
is also grown as leaf vegetable through South-East Asia and Latin America.
Leafy vegetable have gained commercial importance and form an essential part of
diet, providing vitamins and micro-nutrients.

Keywords:
Amaranth leaves, drying, treatments, GSD, OSD and chemicals.

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