CHAPTER XVI. 



Unorganised Ferments (Enzymes). 



Read : 



GREEN. Annals of Bot Vol. vn., pp. 83 137. 



Diastase. 



LINTNER and DULL. Ber. d. d. chem. Ges. xxvr. 

 (1893). 



BROWN and MORRIS. LOG. cit. pp. 633 661. 



(References to other papers on diastase are included by 

 the authors of the above.) 



In vert as e. 



O'SULLIVAN and TOMPSON. J. 0. S. Trans. LVIII. 

 (1890.) 



Glycase. 



LINTNER. Zeit. fur das ges. Brauiuesen xv. (1892.) 



Unorganised ferments are soluble in water and pre- 

 cipitated by alcohol which does not destroy their power, 

 but the latter is destroyed by heating above 80 C. An 

 unorganised ferment should therefore be extracted by 

 cold water, but this is not always possible, even when the 



