Does high-purity papain exist?

Does "high-purity papain" exist? This is a question many customers ask. First of all, how is the concept of enzyme activity defined? Enzyme activity is also called enzyme activity, which refers to the ability of an enzyme to catalyze a certain chemical reaction. The size of enzyme activity or the level of activity can be expressed by the conversion rate of a certain chemical reaction catalyzed under certain conditions, that is, the faster the conversion rate catalyzed by the enzyme, the higher the enzyme activity, and vice versa, the slower the rate, the lower the enzyme activity. Enzyme activity is the primary indicator for evaluating the performance of enzyme products and is indispensable. The determination steps of enzyme activity are relatively complicated, and the determination of enzyme activity will also be affected by some details, such as operation details, centrifugal speed, shaking strength and number of times, extraction time, correct use of pipettes, and cleanliness of glassware. The determination of enzyme activity plays an important role in the quality inspection, product labeling and enzyme activity assurance of enzyme products. Papain extracts immature papaya latex, and is prepared by primary filtration and ultrafiltration to obtain plant-derived enzyme preparations. The activity of the original enzyme is unstable, and the activity is generally between 2.3 and 2 million u/g. As a processing aid, enzyme preparations need immobilized enzyme activity for standardized production in industrial production. According to this principle, papain with an activity higher than 2 million u/g will be diluted with a carrier to reach the corresponding activity of 2 million u/g. Therefore, if "high-purity papain" is required, 2 million u/g papain can be selected.