158 



^^^^^ ^' Act^Sitf '^'*''°^^" °" ''^°'''"^' ^P^"^ "-^^'^^^ Polyphenol Oxidase 



% Relative activity (AA^^^ ^ymin)** 



Heating time (min) ;. .-j 



Temperature (°C) 5 10 20 30 



33 



99' 



100' 



110' 



129' 



38 



107'' 



129b 



232" 



378" 



43 



107*^ 



128'' 



m' 



317" 



' XsXtV°bVT'e'rTo'HTs^'^^nH ?h^^ '^ °^ ^° "'^ '^L-^OP^ ^'^ 0-05 M sodium 

 pnospnaie Dutter (pH 6.5) and the assay was monitored at 475 nm (25°C) 



059 ■"'"' '^ ^"^^^'^ ''^' ^°' ^^' '°"^^°^ °^ ^^^' "t"dy was 



* 



There are no significant differences (P > 0.05) among the treatments 

 within the same column with the same superscript letter ^'^®^^'"®"^' 



% 



