alexa Effect Of Various Salts On Inosinic Acid-degrading Enzyme In The White And Dark Muscle Of Saury
ISSN: 2157-7110

Journal of Food Processing & Technology
Open Access

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3rd International Conference and Exhibition on Food Processing & Technology
July 21-23, 2014 Hampton Inn Tropicana, Las Vegas, USA

Hiroko Seki and Naoko Hamada-Sat
Posters: J Food Process Technol
DOI: 10.4172/2157-7110.S1.006
Abstract
Saury is fished mainly in Japan and Taiwan, and is often preserved using salt. Salt has the effects of maintaining a taste component and suppressing bacterial growth. The taste component of the fish is inosinic acid (IMP), which is degraded to non-taste components by IMP-degrading enzyme (IMPase). The ratio of dark muscle in all saury muscle is approximately 40%. Previous studies have reported that the properties of IMPase in white muscle are different from the properties of IMPase in dark muscle. In this study, we investigated the effect of various salts (NaCl, MgCl2, CaCl2, MgSO4, and Na2SO4) on IMPase activity in the white and dark muscle of saury. Enzyme extracted from white or dark muscle was added to reaction mixtures containing IMP and various final concentrations of salt (0.33?1.67%), and we measured the IMPase activity. In white muscle, the activity was suppressed by all the salts examined at a final concentration of more than approximately 0.5%. However, although IMPase activity in dark muscle was suppressed by NaCl, Na2SO4, and CaCl2 at final concentrations of more than approximately 0.4%, the activity was accelerated by MgCl2 at a final concentration of less than 1.5% and MgSO4 at a final concentration of 0.33-1.67 %. It was thus found that different salts have different effects on IMPase in the white and dark muscle of saury.
Biography
Hiroko Seki is currently PhD student in course of safety management in Food Supply Chain, Tokyo University of Marine Science and Technology.
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