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95
Method III. The mixture shall be raised to and kept at a temperature
of not less than 175°F. for at least 15
seconds.
An alternative to pasteurisation is given, namely, sterilisation
and in this instance the mixture shall be raised to and kept at a
temperature of not less than 300°F. for at least 2 seconds.
Subsequent to pasteurisation or sterilisation the mixture shall
be reduced to a temperature of not more than 45°F. within 1^ hours
and shall be kept at such a temperature until frozen, after which it
must be kept at a temperature not exceeding 28°F. up to the time
of sale.
Ice Cream Sampling. (Bacteriological Examination).—As in the
previous year the Council continued to make use of the Public
Health Laboratory Service as provided for under the National
Health Act and 47 samples were submitted for examination and
the ice-cream graded according to the Ministry's provisional
Grading Scheme. The grading is based on the results of the Methylene
Blue Reductase Test and a summary of this year's reports is
given below:-
Samples
taken
Time taken to Reduce
Methylene Blue
Provisional
Grade
Observations
23 4½ hours or more 1 Satisfactory
11 2½to 4 hours 2 Sub-standard
2 ½ to 2 hours 3 Unsatisfactory
- 0 hours 4 Most Unsatisfactory
11 Ice-lollies From the reports received these
lollies were bacteriologically
satisfactory.
On receipt of a Grade 3 or 4 report it is the practice in this
Borough to obtain further samples from a vendor before administrative
action is taken. It was not necessary during the year to have
recourse to" administrative action."
Quantitative Analysis.—Standards for the composition of ice
cream are contained in the Food Standards (Ice-Cream) Regulations,
1959.
In connection with quantitative analysis, one ice lolly and
one of ice cream mix were examined in the normal course of food
sampling. Both samples proved to be satisfactory and reference to
the Analyses will be found under the heading of Food and Drugs
Act, 1955.
Merchandise Marks Act, 1926.—Under the powers conferred
by this Act, Orders in Council have been made prohibiting the sale