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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - 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 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(7): 1453-1461
DOI: https://doi.org/10.20546/ijcmas.2017.607.174


Inactivation of Escherichia coli in Tender Coconut (Cocos Nucifera L.)Water by Pulsed Light Treatment
Preetha1*, Arun Prasath Venugopal1, N. Varadharaju2 and Z. John Kennedy2
1Department of Food and Agricultural Process Engineering, 2Post-Harvest Technology Centre, AEC & RI, Tamil Nadu Agricultural University,Coimbatore-641 003, Tamil Nadu, India
*Corresponding author
Abstract:

Pulsed light is an emerging non thermal processing technology used for food decontamination. A laboratory scale pulsed light treatment chamber was designed and fabricated. In this study, tender coconut water was exposed to pulsed light to inactivate the E. coli using different process parameter such as juice layer depth (5, 10, 15 and 20mm), shelf height (5, 10 and 15cm) and number of pulses (60, 120, 180 and 240 flashes) corresponding to an fluency of 4.8, 9.6, 14.4 and 19.2J/cm2. Sterilized tender coconut was inoculated with E. coli culture of 106 cfu/ml. Treatments led to maximum reduction of 5.2 log cfu/ml achieved when using 5mm of juice layer, closest shelf distance (5cm) from the lamp and 240 flashes. Soluble solids, pH and color showed no statistical differences (p<0.05). The obtained result suggests that Pulsed light technology will be effective in reducing E. coli counts in tender coconut without compromising the product quality.


Keywords: Pulsed light, Tender coconut, Process parameter, E. coli inactivation.
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How to cite this article:

Preetha, P., Arun Prasath Venugopal, N. Varadharaju and John Kennedy, Z. 2017. Inactivation of Escherichia coli in Tender Coconut (Cocos Nucifera L.) Water by Pulsed Light Treatment.Int.J.Curr.Microbiol.App.Sci. 6(7): 1453-1461. doi: https://doi.org/10.20546/ijcmas.2017.607.174