Rapid casein quantification in milk powder with aggregation induced emission character of tetraphenylethene derivative

Analyst. 2012 Oct 21;137(20):4654-7. doi: 10.1039/c2an35892a.

Abstract

A casein assay has been developed with aggregation induced emission character of BSPOTPE, which is a derivative of tetraphenylethene (TPE). The method exhibits a wide dynamic range of detection for casein from 10 μg ml(-1) to 5000 μg ml(-1), and a good linear range from 20 μg ml(-1) to 1250 μg ml(-1). With sample-pretreatment procedures, we can detect the casein in skimmed and full milk powder, avoiding the interferences from other components and illegal additives in milk.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Caseins / analysis*
  • Cattle
  • Food Additives / chemistry
  • Micelles
  • Milk / chemistry*
  • Spectrometry, Fluorescence*
  • Stilbenes / chemistry*

Substances

  • Caseins
  • Food Additives
  • Micelles
  • Stilbenes
  • sodium 1,2-bis(4-(3-sulfonatopropoxyl)phenyl)-1,2-diphenylethene