Identification of cashmere and wool by genetic technology

With the development of wool modification technology,the conventional identification of cashmere and wool with optical microscopy has gradually shown its limitations.Using gene technology and utilizing the difference of goat and sheep between specific base sequence,this paper studied the DNA identification method of cashmere/wool,through mtDNA sequencing experiment,with pure cashmere wool fiber and different proportion of cashmere wool mixture.The results show that: the developed DNA sequence testing method by the genetic technology can accurately identify cashmere and wool fiber,even with much smaller proportion;the pure cashmere wool fiber can be identified by the specific base sequences using a set of primers;and the cashmere/wool mixture can be identified by their own sequences whether containing cashmere or wool,which are obtained firstly by sequencing with cashmere primer and wool primer,respectively.