Yang-Baxter equation for the asymmetric eight-vertex model

In this note we study `a la Baxter [1] the possible integrable manifolds of the asymmetric eight-vertex model. As expected they occur when the Boltzmann weights are either symmetric or satisfy the free-fermion condition but our analysis clarify the reason both manifolds need to share a universal invariant. We also show that the free-fermion condition implies three distinct classes of integrable models.Comment: Latex, 12 pages, 1 figur

Hot-Packaging Reduces Lipid Oxidation and Improves Sensory Characteristics of Cooked Turkey Meat

The effects of two vacuum packaging methods (hot and cold vacuum packaging) on the storage stability and sensory characteristics of cooked meat were compared. Ground turkey breast and leg meat patties were cooked, vacuum packaged appropriately, and stored up to 22 days. Lipid oxidation was measured by the thiobarbituric acid (TBA) test. In addition, Total aerobic count and sensory evaluation (flavor, juiciness, tenderness, overall acceptability) were conducted. There was no significant difference in aerobic plate count by packaging methods; however, panelist rating revealed that hot-packaged turkey leg meat had higher juiciness and overall acceptability scores than cold-packaged ones. Although TBARS (thiobarbituric acid reactive substances) values of all types of patties increased gradually, TBARS values of hot-packaged leg and breast were significantly lower than those of cold-packaged ones. Our results indicate that the hot-packaging method is superior to the cold-packaging method in controlling lipid oxidation and improving sensory values

Dietary Conjugated Linoleic Acid (CLA) Effects Lipid Metabolism in Broiler Chicks

Dietary CLA increased triglyceride, total cholesterol, and HDL cholesterol levels in plasma. The increased plasma triglyceride level could be caused by increased fatty acid synthesis in liver after CLA feeding, because the activity of fatty acid synthase in liver increased after dietary CLA treatment. Dietary CLA changed fatty acid composition of feces, but had no effect on fat content. Comparing to the linoleic and linolenic acids available in diets, ratios for their excretion into feces in CLA treated birds were significantly higher than those in control diet. Liver weight of broilers significantly increased after CLA feeding, but there was no difference in liver fat content among the different CLA treatments. CLA treatment did not influence total free fatty acid content in plasma, while there was significant difference in composition of free fatty acids. Dietary CLA reduced the content of linoleic and arachidonic acids in both plasma and liver