Determination of yolk:white ratio of egg using SDS-PAGE


Uysal R. S. , Acar-Soykut E., BOYACI İ. H.

FOOD SCIENCE AND BIOTECHNOLOGY, vol.29, no.2, pp.179-186, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 2
  • Publication Date: 2020
  • Doi Number: 10.1007/s10068-019-00650-4
  • Title of Journal : FOOD SCIENCE AND BIOTECHNOLOGY
  • Page Numbers: pp.179-186

Abstract

The aim of present study was to determine liquid egg adulteration based on yolk:white ratio of egg using sodium dodecyl sulphate-polyacrylamide gel electrophoresis and by measuring Brix. To construct a calibration model, liquid egg samples were prepared by mixing egg yolk and white (yolk:white) at different concentrations. A high coefficient of determination value (R-2 = 0.992) was obtained. Limit of detection and limit of quantification were estimated as 62 g/kg and 187 g/kg. The accuracy of the model was tested using eleven LWE samples, and the yolk ratios of 90.9% of these samples were predicted successfully. Liquid whole egg (LWE) containing additional egg white up to 30% was also predicted with a low relative error of less than 10%. Yolk:white ratio of LWE samples and authentication of the components of LWE (containing extra white or water) can be determined using proposed method.