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Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Sterilization of micro-organisms with special reference to new methods applicable to the dairy industry


Sterilization of micro-organisms with special reference to new methods applicable to the dairy industry



Milk Plant Month 34(12): 24-26, 46, 52



Bacteria can be sterilized or inactivated by physical methods, by application of heat or light, and by chemical methods. The best method is heat. Drying, freezing, pressure, supersonic waves are of no value. Ultraviolet light is of value only in places which are essentially bare of equipment. Ultraviolet rays have no penetrating power and so are of small value in the dairy plant. The most practical methods of sterilization in the dairy industry are chemical methods. Disinfectants which have strong odors or tastes, are colored or are toxic or corrosive are rejected, leaving the alkaline cleaners, weak acids, and synthetic detergents. Alkalis have excellent cleaning properties. Chlorine combines rapidly with organic matter in milk and so is of little value unless the equipment has first been thoroughly cleaned. Work being done on use of weak acids and synthetic detergents shows them to be very satisfactory.

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Related references

Methods of microbiological examination of dairy products and for dairy purposes. III. Methods for the detection of specific groups of micro-organisms. Section 9. Thermophilic organisms. Australian Standard (AS 1095.3.9-1978): 4, 1978

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