High quality Polyphenol oxidase 9002-10-2 with best price CAS NO.9002-10-2

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English name: Polyphenol oxidase； Tyrosinase from mushroom； Catechol Oxidase； Monophenol Monooxygenase； Monophenol, dihydroxyphenylalanine:oxygen oxidoreductase
CAS number: 9002-10-2
Level: BR
Vitality: ≥ 500units/mg
Activity definition: In a 3ml reaction mixture containing L-dihydroxyphenylalanine or catechol and L-ascorbic acid, at pH 6.5 and 25 ℃, the change in Δ A280 of 0.001 per minute is considered as one enzyme activity unit
Best pH: 6.0-7.0
Product Description: Polyphenol oxidase is a bifunctional,copper-containing oxidase having catecholase and cresolase activity.It is responsible for browning reactions through the phylogenetic scale.The enzyme has a molecular weight of 128KDa.
Appearance: Powder.
Usage: It is mainly used as a biochemical reagent in scientific research. It catalyzes the oxidation of tyrosine to dopa and further oxidizes dopa to its precursor, dopaquinone, which can produce melanin. In industry, this enzyme has a dual function: its advantageous side is that it utilizes the oxidation effect of this enzyme for the later fermentation of beer, improving the stability of beer and preventing turbidity; It can also be made into immobilized enzymes for the treatment of phenol containing wastewater. On the downside, fruits and vegetables containing this enzyme, when exposed to air after cutting, will generate corresponding quinones at the incision site due to the catalytic effect of the enzyme, which will appear black brown and must be cut off before consumption. Generally, blanching, acidification, or sulfurous acid treatment can be used to inhibit its effect.
Storage: -20 ℃

Nanjing Duly Biotech Co.,Ltd 

has been established for 11 years. It  is mainly engaded in biological and chemical reagents,including enzyme reagents, proteins, nucleic acids, pigments, amino acids, vitamins,carbohydrates, buffers, surfactants,culture media and Separation of materials and kits.There are more than 10,000 products in total.

Our company’s aim is to provide customers with the best quality products and the most intimate service.Personnel has been trained; every batch of material is checked; each procedure guarantees the quality; every bag of our products is top grade;service is thoughtful all the time.The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.

FAQ

Q1: Are you a manufacturer?

Answer: Yes, we are factory founded on 2009.

Q2:How to contact with us?

Answer: Search our company name as Nanjing Duly Biotech Co., Ltd. Please contact sales for specific information.

Q3:Can you give me a discount price?

Answer:Surely,It depend on your qty.

Q4: How can i get a sample?

Answer:Free sample is available,but freight charges will be at your account and the charges will be return to you dudect from your order in future.

Q5:What are the main categories of products sold by the company?

Answer: It  is mainly engaded in biological and chemical reagents,including enzyme reagents, proteins, antibiotics, plant hormones, nucleic acids, pigments, amino acids, vitamins, carbohydrates, buffers, surfactants, culture media and Separation of materials and kits.

Q6:Is the company mainly engaged in small packaging or large packaging?

Answer: Mainly do small packaging reagents, large packaging also do, specific can ask customer service personnel.