The use of high-pressure liquid chromatography in the simultaneous assay of 11beta-hydroxylase and 18-hydroxylase in zona fasciculata-reticularis tissue of the rat adrenal cortex. |
| |
Authors: | S Gallant S M Bruckheimer A C Brownie |
| |
Institution: | Department of Anatomy, University of Florida College of Medicine, Gainesville, Florida 32610 USA |
| |
Abstract: | Certain reagents utilized in the formation of polyacrylamide gels are shown to interfere in the Lowry assay for protein. Acrylamide (3–30%) and potassium ferrocyanide (0.0015–0.0105%) produced a linear response in color formation. Both compounds are capable of reducing the phenol reagent in the absence of copper and the interference can be compensated for by employing the appropriate blank. An extract of polymerized and electrophoresed gels also interferes in the Lowry assay, however, this increased color formation cannot be corrected by using a gel extract blank. Under the conditions studied, filtration, centrifugation, and dialysis did not sufficiently remove the acrylamide fines responsible for the interference. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|