:v.i 



■I'AHl.K X\ 111. ACriiiN [>]■ KO.Il IvXTKACr ri'iiX STAUi'li Ar lUi-C 

 10 n'lams (if staivli t.i 10 u-nims of' kuji. 



I Total slaifli producls Specifk- iD'Aloiy 

 in jolution power of 



(köji ilnhiulidl ' stivri'li iirodiiels. 



5 mimiU's 'iTO grains. IS'J'-.l 



j 15 .. • ,. .. lW°.'-i 



i 30 ,. .... Ill«' 



I 



1 lii.ur. , .... I lf.t<° 

 U ., .. ., I'''»"-'-' 



1} 111'. l''ri,'sli niKruiuii, ■ { 



2 Ins. 



3 .. 

 :!.V ., 



ltl.I',1 .. 



1 l.".".s 





i3r.s 



■ ■11 



\2i<''.'J. 





lar.s 



lll.l'.l ., 



isr.s 



Till' 1 iiiiiliri tuiiud at 1.') 111111 i.s (loiilil less iiiciii iL'L't. After lialf-an-lioiir 

 liad clajwud. and tlif sjiccillc rotatory jiowcr had diiuiiiisli(.'d Xo l(i8°, tlic action 

 apin'ivred t" ccivse. until a rre.-;!! additiim of koji was made, wlieii it fell at a similar 

 rate, and f'lr nearly tlic same time as at tirst. Tlie lii'^h temperature, therefore, 

 vei'v iiuiekly renders the "'diastase" of Icujj inartive. 



At a tem|ier.iture of TO'O. [iractically no solution of starch took [ilace, from 

 wiiieh it may ho eoncluded that a temiicr.itnrc hetweun (>0 and 70"C. renders it 

 completely inert The "diastase' of malt is not lulled until hetwecn SQ^ and 

 ^V, which constitutes another point of dltVerence hetween the two. The two 

 hodies reseudile one another in this, that the loss of activity is accompanied hy 

 the upjioarancc of a distinct precipitate, consisting of alhumenoid matter th;it h.is 

 lieen coagulated hy lieat. Slessrs. ürown and Heron state th it "I'iVery stage in 

 the coagllhltion of malt-e\tr,u:t ly heat is altended with i ilisliiict iiiodiliralioii 

 of its starch-translorniing power; and conversely, we have, never been ahh' to 

 iliscover any modilicatiou in st.ircli-transforming power which is not attended 

 with distinut coagulation. In addition to this, at 80 ' — 81^, the point at which 

 the di-astatie power of nialt-extniet is destroyed. neai!\' the whole of the 

 coagnlalile alhumi-noids have iieen preci|iitated. We are eonseipiently led to 

 conclude that the diiustatie power is a function of tiie co.i^^idahle allmnienoids 

 them.>^elves, and is not du''. as has lieen iji'iierally supposed, to (lie ppscnce of 

 a dislinjtivo transforminir awrit."'^ 



* HliiWiiiV lli'l'oli. I(ir. c-il. |i. 11.")!. 



