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(a)
(b)
270
278
274
A
267
265
A
B
C
A
'
B
'
C
'
263
263
240
B
C
260
260
320
D
278
257
327
E
200
300
400
500
200
300
400
nm
nm
(c)
(d)
222
264
277
219
240
A
275
315
B
A
277
225
269
B
250
278
295
C
D
E
C
280
310
D
200
250
300
350
400
200
250
300
350
400
nm
nm
Figure 4.18.
(a) A—UV spectrum of invertase in water solution. From B to
E—increasing addition of O
3
. (b) A—UV spectrum of pectinase in water solution
(147 mg in 22 mL of H
2
O). The dotted line is the spectrum after the addition of 5 mg;
B—after the addition of 21 mg; c—after the addition of 56 mg. A
'
—differential spec-
trum of A; B
'
—differential spectrum of B; and c
'
—differential spectrum c. (c) A—UV
spectrum of of papain before ozonation (solid line) and after addition of 10 mg O
3
(dotted line); B—differential spectrum of A; c—UV spectrum of trypsin (solid line)
and after addition of 20 mg O
3
; D—after addition of 45 mg O
3
; E—differential spectrum
of c. (d) UV spectrum of gelatin before ozonation (solid line) and after addition of
10 mg O
3
; B—gelatin after addition of 45 mg O
3
; c—differential spectrum of A; D—ratio
of the spectrum B/A (redrawn from cataldo [237]).
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