Angiotensin-converting enzyme inhibitory assay v1

The use of extracts obtained from various plants is an activity developed for years with the purpose of taking advantage of resources from the regions to prevent or cure a specific disease. On the other hand, the application of in vitro techniques, as angiotensin-converting enzyme inhibitory assay have allowed finding the relationship of organic compounds with biological activities and thus be able to determine which type of plants or their extracts are suitable to be used as a treatment for hypertension. In this protocol is described a method based on the colorimetric reaction of the hippuric acid with trichloro-triazine (TT).