CHAPTER XVI. 



Unorganised Ferments (Enzymes). 



Read : — 



Green. Annals of Bot. Vol. vii., pp. 83 — 137. 



Diastase. 



LiNTNER and Dull. Ber. d. d. chem. Ges. xxvl 

 (1893). 



Brown and Morris. Log. cit pp. 633 — 661. 



(References to other papers on diastase are included by 

 the authors of the above.) 



Invertase. 



O'Sullivan and Tompson. J. G. S. Trans, lviil 

 (1890.) 



Glycase. 



Lintner. Zeitfilr das ges. Brauwesen 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 



