NE X T to trimethylamine, ammonia is the most typical spoilage product in fish, molluscs and crustaceans. I t is generally determined together with other volatile nitrogen bases, as total volatile basic nitrogen (TVB). The objective quality determinations of cartilaginous fish such as dogfish and skate, however, raises special problems. These fish contain large quantities of urea (1.5 to 2 per ...

We present a discontinuous Galerkin (DG) scheme with suitable quadrature rules [15] for ideal compressible magnetohydrodynamic (MHD) equations on structural meshes. The semi-discrete scheme is analyzed to be entropy stable by using the symmetrizable version of the equations as introduced by Godunov [32], the entropy stable DG framework with suitable quadrature rules [15], the entropy conservati...

The purpose of this study was to investigate the therapeutic effects of propolis on biochemical and microbiological parameters in muscle tissues of carp (Cyprinus carpio, Linnaeus 1758) exposed to arsenic. A sublethal concentration of arsenic (0.01 ppm) and/or 0.01 ppm propolis were administered to fish for seven days. Biochemical parameters [pH, lactic acid, total volatile basic nitrogen (TVB-...

The preservation potentials of phenol produced by hardwood, Tectonia grandis and some selected indigenous preservatives on smoked Clarias gariepinus were investigated in this study. A sample size 168 catfish was pre-treated with single (10.0% salt (FS), 10.0% lime (FLM), pepper (FPP),) combined (5.0% 5.0% (FSL), (FSP), (FLP), 3.3% salt, (FSLP)), untreated serving as control. fish samples at 90....

In this study, hot smoking process was applied to thornback ray (Raja clavata), which is a non-target catch, and the product obtained vacuum packaged then stored at refrigerated conditions (4±1 °C) for 120 days. The nutritional, chemical, microbiological, sensory changes in products were examined every 15 After rays, significant observed nutritional composition of (P<0.05). Total volatil...