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Effects of Storage Conditions on Spoilage

Effects of Storage Conditions on Spoilage - Oxygen and temperature are the two most important factors that influence the type of microbial growth and spoilage of food during storage.

Oxygen: The presence or absence of oxygen determines the types of organisms tbat can multiply and the kind of spoilage produced. Moulds and aerobic bacteria: grow only where there is plenty of air and chiefly cause surface spoilage. Yeast and facultative bacteria can grow in closed containers as well as when exposed to the air. Clostridia and other organisms bring about spoilage of food under strict anaerobic condition.

Temperature: Low temperature retards spoilage, but even subfreezing temperatures do not prevent multiplication of all microorganisms until about - 7°C is reached. Refrigerated foods are therefore subject to spoilage by moulds and by some yeasts and bacteria. Foods stored at -18°C remain free from microbial growth and a slow decrease in population may even occur. Foods and food products stored at room  temperature or in warm locations are easily spoiled by mesophilic arid thermophilic organisms.

 

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