87 results about "Thiobarbituric acid" patented technology

The invention relates to a method for evaluating the fresh water fish meat quality. The method is characterized by comprising the following steps that 1, the whiteness, the tenderness, the water binding capacity, the trimethylamine content, the freshness and the thiobarbituric acid value of a to-be-tested fresh water fish meat sample are tested separately; 2, the determined values are processed byusing a standard deviation standardization method, and the standardized values are obtained, wherein the standardized whiteness value is denoted as Zx1, the standardized tenderness value is denoted as Zx2, the standardized water binding capacity value is denoted as Zx3, the standardized trimethylamine content value is denoted as Zx4, the standardized freshness value is denoted as Zx5, and the standardized thiobarbituric acid value is denoted as Zx6; 3, the values in the step 2 are substituted into the formula y=-0.095*Zx1+0.168*Zx2+0.34*Zx3+0.342*Zx4+0.313*Zx5+0.328*Zx6, wherein y is the quality evaluation result of fresh water fish meat; 4, the quality of the fresh fish meat is judged through the obtained y, wherein when y is larger than or equal to 1, the quality of the fresh fish meatis extremely poor; when y is larger than -1 and smaller than 1, the quality of the fish meat is general, and when y is smaller than or equal to -1, the quality of the fish meat is extremely good. Themethod is quick and accurate.

The invention discloses preparation and application of a 3-substituted-N-hexyl phenothiazine derivative shown in a general formula (I). In the formula, R is malononitrile group, 1, 2, 4-triazolo [1, 5-a] pyrimidyl, spiropyranyl, 3-dicyanomethylene-1, 5, 5-trimethylcyclohexenyl, 1, 3-diethyl-2-thiobarbituric acidyl, N, N-dimethylaminophenyl, p-nitrobenzophenone or 2, 4, 6-trimethyl-3, 5-dicyanopyridyl. All the compounds have fine solubility and thermostability and can be applied to flat-panel displays as red electroluminescent materials.