International Journal of Scientific Engineering and Research (IJSER)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed | ISSN: 2347-3878


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Indonesia | Agricultural Engineering | Volume 5 Issue 2, February 2017 | Pages: 64 - 67


Kinetic Changes of Moisture Content and Lightness of Milled Rice during Storage in Plastic Packaging

Tamrin, Filli Pratama, Friscillia Apriliana

Abstract: A kinetic study was carried out to assess the moisture content (MC) and lightness (L*) changes of milled rice during storage in some plastic packagings at room temperature. There were our three types of plastic packaging selected (polypropylene/PP, polyethylene/PE, polyamide/PA), as a comparison, the changes of the milled rice without packaging was also carried out. Logarithmic plot for MC and L* values produced reasonably straight lines, indicating that the increase of moisture content in milled rice kernel followed first-order kinetics to a fair approximation for all kinds of plastic bags as well as milled rice without packaging. The rate (k) of MC increases were in the range of 5?10-3 to 9?10-3 % per week. Unlike the MC, the L* values decreased during storage in plastic packaging which was noted as minus values for the rate (k) changes in the range of 7?10-3 to 1.6?10-2 per week.

Keywords: kinetic changes, moisture content, lightness, plastic packaging



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