The application discloses a method for extracting and detecting
heme iron in pilose
antler and belongs to the technical field of food and Chinese medicinal material detection. In view of the problems that
heme iron in pilose
antler is easy to attenuate and chromatographic columns are easy to be blocked in a
pyridine sodium hydroxide strong alkaline extraction
system, the application constructs a stable detection scheme from sample pretreatment to instrument analysis by means of the following measures:
nitrogen charging and
oxygen removing of the extraction liquid, addition of a combination protective agent of
sodium thiosulfate or
sodium sulfite and disodium ethylenediaminetetraacetate, whole-process low-temperature light-avoiding operation, time restraint of sample injection within 1 hour after sample treatment, and protection of a chromatographic
system by means of a continuous-use reverse-phase C18
chromatographic column under an alkaline condition with a pH value of 10 or more, a pre-column and a neutral gradient cleaning program. The
peak area attenuation rate of
heme iron within 1 hour is not more than 1.0% by the method, the column pressure of the
chromatographic column can be controlled after batch sample injection, and the column pressure can be basically recovered after cleaning, so the method is suitable for
quantitative determination of low-content
heme iron in pilose
antler and pilose antler
powder, pilose antler extract, pilose antler blood products and other pilose antler related products.