Comparisons Of Vitamin B₂ And B₁ In The Ordinary Eggs,Chai Eggs And Dark Eggs On The Market

In order to compare and analyze the content of water-soluble Vitamin B₂ and B₁ in ordinary eggs,chai eggs,dark eggs yolk and whole egg,the experiment purchased three kinds of eggs with similar production and packaging dates from a large supermarket in Tianjin,and randomly selected 96 eggs for each egg.48 were used to determine the content of Vitamin B₂,and 48 were used to determine the content of Vitamin B₁.Each of the eggs was tested for 24 samples of egg yolk and 24 samples of whole eggs.The reverse high-performance liquid phase method was used to determine the content of Vitamin B₂ and Vitamin B₁ in egg yolk and whole egg samples,and statistical analysis was carried out.This study provides a theory for the study of food nutrition and the selection of eggs for specific populations.1.Comparison of Vitamin B₂ content in three kinds of eggs（1）Comparison of Vitamin B₂ content in egg yolkThe results of the determination of Vitamin B₂ in ordinary eggs yolk is: 0.246～0.359 mg/100 g,Chai eggs yolk is: 0.277～0.386mg/100 g,dark eggs yolk is: 0.261～0.359mg/100 g.The average value of Vitamin B₂ in egg yolk is from high to low: chai eggs > dark eggs > ordinary eggs.There was no significant difference in B₂ content among the three egg yolks（P>0.05）.（2）Comparison of Vitamin B₂ content in whole eggThe results of the determination of Vitamin B₂ in ordinary whole eggs is: 0.248～0.280 mg/100 g,chai whole eggs is: 0.255～0.329 mg /100 g,dark whole eggs is:0.283～0.321mg/100 g.The average value of Vitamin B₂ in whole egg is from high to low: chai eggs > dark eggs > ordinary eggs.There was no significant difference in B₂ content among the three whole egg（P>0.05）.2.Comparison of Vitamin B₁ content in three kinds of eggs（1）Comparison of Vitamin B₁ content in egg yolkThe results of the determination of Vitamin B₁ in ordinary eggs yolk is: 0.128～0.158 mg/100 g,Chai eggs yolk is: 0.131～0.144mg/100 g,dark eggs yolk is: 0.123～0.156mg/100 g.The average value of Vitamin B₁ in egg yolk is from high to low: ordinary eggs > chai eggs > dark eggs.There was no significant difference in B₁ content among the three egg yolks（P>0.05）.（2）Comparison of Vitamin B₁ content in whole eggThe results of the determination of Vitamin B₁ in ordinary whole eggs is: 0.102～0.124 mg/100 g,chai whole eggs is: 0.105～0.123 mg /100 g,dark whole eggs is:0.099～0.121mg/100 g.The average value of Vitamin B₁ in whole egg is from high to low: chai eggs > ordinary eggs > dark eggs.There was no significant difference in B₁ content among the three whole egg（P>0.05）.This study successfully used reversed-phase high performance liquid chromatography to determine the content of Vitamin B₁ and Vitamin B₂ in eggs..From the results analysis,it can be seen that Vitamin B₂ is not only present in the egg yolk in the three kinds of eggs,but also contains a higher concentration of Vitamin B₂ in the egg white,and Vitamin B₁ is mainly present in the egg yolk.The order of Vitamin B₂ in egg yolk and whole egg was: chai eggs>dark eggs> ordinary eggs,but the difference of Vitamin B₂ content between egg yolk and whole egg was not significant（P>0.05）;There was no significant difference in Vitamin B₁ content（P>0.05）.This study provides a theoretical and practical reference for the selection of eggs for specific populations.