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88
With increasing experience of the heat treatment method the
sampling rate has now been reduced to 33⅓ per cent. which gives
us sufficient "tracer" positives to keep a check on the effectiveness
of the process.
It has been found desirable to subject all dried albumen, from
whatever source, to heat treatment and this has become routine.
The following table gives the results obtained from the sampling
of all types of egg albumen during the year ended 31st December,
1956 :—
Imported Egg Albumen—Summary of Findings
Chinese Dried Hen Eoo Albumen :—
Imported Egg Albumen—Summary of Findings
Chinese Dried Hen Egg Albumen :—
Batch
No.
No. of
Tins
of
100 lbs.
Control Samples
Bact. Results of Positives
after Heat Treatment
Positive
Negative
Postive
Negative
Percentage rate of Control Sampling: 100%
1
81
24
57
Nil
24
2
268
23
245
Nil
23
3
323
26
297
Nil
26
4
186
4
182
Nil
4
5
232
10
222
Nil
10
6
231
10
221
Nil
10
7
238
Nil
238
—
—
8
168
Nil
168
—
—
Percentage rate of Control Sampling : 33⅓%
9
157
Nil
55
—
—
10
190
1
74
Nil
1
11
112
Nil
40
—
—
12
112
Nil
40
-
-
Heat treatment is carried out in accordance with the recommendations
of the Albumen Advisory Committee.
Incidence of Salmonellae :
Salmonella aberdeen 6 tins
„ anatum 1 tin
„ neivport 1 tin
„ potsdam 9 tins
„ thompson 83 tins
„ typhi-murium 1 tin
Norwegian Dried Eoo Albumen :—
Occasional importations of 2 cwts. drums.
Samples for bacteriological examination extracted from each drum.
2 drums imported in October, 1956 All negative for
2 drums „ „ November, 1956 Salmonellae
Danish Pasteurised Flake Hen Ego Albumen :—
40 X 1 cwt. wooden casks arrived recently at Heat Treatment Centre.
100% sampling carried out for bacteriological findings.
Salmonella typhi-murium isolated from 36 casks. 4 samples negative.
Heat treatment of this albumen still in experimental stage.