spoilage of food

Welcome To

Presentation on

Spoilage of Food

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Personated to …

Dr. MD. SHOHIDULLAH MIAHDirector & Coordinator

College of Agricultural Sciences

4 Embankment Drive Road, Sector-10 (Off Dhaka-Ashulia Road) Uttara Model Town, Dhaka-1230, Bangladesh. Phone: 896 3523-27, 892 3469-70, 0171 4014933 Fax: 892 2625, info@iubat.edu,

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Personated By …

MD. SHAKIL SARKER10309003

College of Agricultural Sciences

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Food Spoilage

Food spoilage means the original nutritional value, texture, flavor of the food are damaged, the food become harmful to people and unsuitable to eat.

Spoilage of food is meaning

a condition where ….

produced excessive growth of microorganisms, those are leading to decomposition.

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FOOD SPOILAGE BY

Microorganisms Enzymes Insects

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Food Spoilage Microorganisms Are..

Mold

Yeast

Bacteria

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Molds

Molds are eukaryotic micro-organisms that are decomposers of dead organic material.

Moulds form spores which, when dry, float through the air to find suitable conditions where they can start the growth cycle again.

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Yeast

Yeasts are single-celled fungi useful in the production of various types of food and beverages, such as bread, yogurt, cider, and alcoholic beverages.

Yeasts can be responsible for the decomposition of food with a high sugar content.

Yeast metabolizes sugar producing alcohol and carbon dioxide gas. This is known as fermentation.

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Bacteria

Bacteria are round, rod or spiral shaped microorganisms. They occur in different sizes and shapes and are classified as coccus.

Bacteria

Coccus

Bacilli

Spirillae

Diplo Staphylo

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Bacteria Cont’d…

Various bacteria can be responsible for the spoilage of food. When bacteria breaks down the food, acids and other waste products are created in the process.

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EnzymesEnzymes are proteins found in all plants and animals.

Enzymes cause undesirable changes in color, texture and flavor.

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Insects

Worms, bugs, weevils, fruit flies, moths cause extensive damage to food and reduce its nutritional value and make it unfit for human consumption.

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Control of Micro-organisms factors

Cold Drying Acid Smoke

Air Chemical Radiation

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Thanks

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