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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(6): 573-580
DOI: https://doi.org/10.20546/ijcmas.2017.606.067


Effect of Air Velocity and Pre Treatment on Drying Characteristics of Tomato Slices during Solar Tunnel Drying
S.P. Rajkumar, Arun Prasath Venugopal*, Aarthy Viswanath and N. Varadharaju
Department of Food and Agricultural Process Engineering, PHTC,Tamil Nadu Agricultural University, Coimbatore- 641003, Tamil Nadu, India
*Corresponding author
Abstract:

A study was conducted for drying of tomatoes in the developed solar drier at three different air velocities of 2 m/s, 3 m/s, 4 m/s respectively. The samples were given pre-treatment with KMS+CaCl2 and NaCl. Open sun drying was carried out simultaneously on the other side and was taken as control. The final moisture content of 7.1 per cent (w.b.) was achieved after drying for 10 hours at the air velocity of 3 m/s whereas it was 16.7 per cent (w.b.) and 23.9 per cent (w.b.) at 2 m/s and 4 m/s respectively. The moisture content of tomato under sun drying was 39.1 per cent (w.b.) at the 10th hour. It was found that samples pre-treated with KMS+CaCl2 achieved the final moisture content of 7.1 per cent (w.b.) within 10 hours. Samples treated with KMS+CaCl2 showed a higher drying rate of 1.68 g/min and 1.60 g/min for NaCl. The untreated sample showed the drying rate of 1.52 g/min and the open sun drying method had the minimum drying rate of 1.16 g/min. It was found that the KMS+CaCl2 treated samples recorded maximum drying rate at a velocity of 3 m/s.


Keywords: Solar tunnel drying, Drying of tomato slices, Moisture content, Drying rate.
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How to cite this article:

Rajkumar, S.P., Arun Prasath Venugopa, Aarthy Viswanath and Varadharaju, N. 2017. Effect of Air Velocity and Pre Treatment on Drying Characteristics of Tomato Slices during Solar Tunnel Drying.Int.J.Curr.Microbiol.App.Sci. 6(6): 573-580. doi: https://doi.org/10.20546/ijcmas.2017.606.067