30 results about "Collagenase Inhibitor" patented technology

The invention discloses an enzyme unhairing method for removing damage to a cowhide leather grain surface. The enzyme unhairing method is characterized in that at 35-42 DEG C, at first, a collagenase inhibitor of which the tare is 0.1-1.0% is used for pre-processing cowhide subjected to soaking and meat removal under the condition that the pH value is 7.5-11.5, then an unhairing enzyme preparation is added by routine to carry out unhairing treatment for 3-9 hours, and the follow-up processes such as mechanical unhairing, liming, deliming, softening, picking and tanning are performed by routine. The cowhide is pre-processed by the collagenase inhibitor before the operation of enzyme unhairing is performed, so that on one hand, collagenase in unhairing enzyme components is inhibited, the safety implementation of enzyme unhairing at a relatively high temperature is ensured, the enzyme unhairing time is greatly shortened, the efficiency is greatly improved, and the suitability for industrial production and application is achieved, on the other hand, the collagenase inhibitor has little impact on the activity of casease in the unhairing enzyme preparation, so that efficient unhairing efficiency is remained, the obtained leather grain surface is intact and undamaged, pores are clear, and the probability of surface looseness is low.

The invention discloses a biochemical skin-beautifying method and beautifying cream used therein. In the skin-beautifying method, the beautifying cream with a specific collagenase inhibitor as a core is used, wherein compared with a collagenase inhibitor disclosed in the prior art, the collagenase inhibitor can better keep collagen in skin at a high level, so that long-term effects of removing wrinkles from the facial skin, enhancing the elasticity and eliminating bags under the eyes and dark circles are achieved.

A method for purifying an oligomeric proanthocyanidin, comprising an extraction step of extracting a raw material containing multiple types of oligomeric proanthocyanidins having different degrees of polymerization with an extraction solvent selected from water and an aqueous alcohol solution, wherein the alcohol concentration in the extraction solvent is preset in accordance with the degree of polymerization of a desired oligomeric proanthocyanidin in the extraction step and the oligomeric proanthocyanidin having a desired degree of polymerization is extracted using the extraction solvent.

An object of the present invention is to provide hyaluronidase inhibitors, collagenase inhibitors, elastase inhibitors, MMP-1 production suppressors, and collagen synthesis promoters that contain as an active component one or more pigment compounds that are obtained as extracted from plants of the family Rosaceae, as well as agents for cutaneous application, skin cosmetics, and quasi-drugs that contain such pigment compounds. The present invention provides hyaluronidase inhibitors, collagenase inhibitors, elastase inhibitors, MMP-1 production suppressors, collagen synthesis promoters, agents for cutaneous application, skin cosmetics, and quasi-drugs that contain one or more compounds in a class of rosacyanins or one or more compounds in a class of rosadelphins as an active component.