部落冲突所有版本 www.xbxpu.icu Antibacterial preservatives as the substitute of sodium azide
During the development of in vitro diagnostic reagents, the stability of reagents is the key to restrict the marketization of products. In addition to focusing on the accuracy and repeatability of diagnostic reagents, developers also need to ensure the quality of the product over the shelf life, so the choice of preservative is important. With the continuous development of in vitro diagnostic reagents, the requirements for preservatives are also constantly increasing. Safety and environmental protection have been included in the scope of government departments. Some preservatives harmful to the human body or the environment will be gradually phased out. HY-500 preservative is a broad-spectrum, high efficiency, low toxicity and environment-friendly preservative produced by in vitro diagnostic reagents. It has been used for 15 years in place of sodium azide in production, and it is hoped that the majority of users will be assured of using it.
Special note: HY-500 preservative is not in the national regulatory (prohibited) range
The HY-500 preservative attacks three specific enzyme cleavage sites in the cell's tricarboxylic acid cycle: α-ketoglutarate dehydrogenase, succinate dehydrogenase, and NADH dehydrogenase. For example: pyruvate dehydrogenase, lactate dehydrogenase, alcohol dehydrogenase, etc., thereby inhibiting cell metabolism, macromolecular synthesis.
Tricarboxylic acid cycle diagram
Features: All bacteria and fungi are part of the tricarboxylic acid cycled at least, so HY-500 preservatives has a wide range of applications.
At recommended concentrations, HY-500 preservatives acts on horseradish peroxidase and alkaline phosphatase systems, respectively, without affecting the rate of enzyme-substrate binding and have no effect on enzyme activity.
Advantages and features:
1, pH range is 3 to 13, good chemical stability, low toxicity, safety, pollution-free environment.
2, the use of low doses, it is recommended that the amount of use within one year period is 0.05%, the use of more than one year period is 0.1%.
3, easy to use, can be mixed with water in any proportion, does not affect the enzyme activity, does not inhibit the antibody binding.
4, broad-spectrum, long-term kill a variety of bacteria, fungi and yeast.
5, low toxicity, is completely harmless within the recommended concentration, no residue, emissions will not cause cumulative pollution to the environment.
6, compatibility with a variety of emulsifiers, surfactants and protein ingredients, stable performance, does not interfere with the reagent color.
1) coating solution, blocking solution, diluent, buffer, standard solution.
2)preparation of production of in vitro diagnostic reagents
Instructions for use
HY-500 preservative is a colorless, slightly viscous, slightly aromatic and astringent oily liquid. Dissolved in water, mixwith acetone, ethanol and glycerol arbitrary in any ratio, is one of the relatively safe preservatives. Used as a more suitable alternative to virulent sodium azide in biological buffers.
Density: 1.102 g / cm
Melting point: 11 - 13 ° C
Boiling point: 247 ° C (245 ° C)
1, the same method used to join the same amount of raw materials, stirring, the amount of (0.5-1.0) ml / L.
2, for products containing NADH, blank absorbance can be increased by about 10%.
3, brown glass bottle or brown plastic bottle packaging as the best.
4, to provide a variety of packaging specifications, dark storage at room temperature, valid period is 5 years.
5, compared with Proclin-300, Proclin-300 will inhibit some of the biological activity of enzymes, and HY-500 preservative does not inhibit the activity of biological enzymes, and the low price, the use range is wide .
6, validated currently available: ALT, AST, m-AST, GGT, ALB, UA, CHOL, TRIG, HBDH, GLU-OX, AMY, UREA, TBA, 5 'NT, immune 5, etc.