WHY ARE JAMS AND JELLIES NOT ATTACKED BY BACTERIA AND FUNGI

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Awadhesh Thakkar answered this

because they have a high sugar content which helps in making a hypertonic environment and removes water from the microbes which is necessary for their survival.

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Utsav Ghoshal answered this

Because they contain a large amount of sugar in them, if any micro-organism tries to enter it they lose water because of osmosis. when they lose water they shrink and die. Preservation with the use of sugar is called jellying

Priyanshi Sharma answered this

because the hyerptonic solution with high sugar content remove bacteria and fungi from water

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Sona Sharma 🖤 answered this

As we know that , the solutions which are highly concentrative(that contains high amount of sugar) can be defined as hypertonic ; so the cells which come in contact loose their water and start to shrink and wrinkle . Hence , same happens with any bacteria or fungi.

Vishakha answered this

Jams and Jellies are not attacked by bacteria and fungi because the have sugar as a preservative in them which reduces moisture which is essential for the growth of bacteria and fungi

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Rama Rama answered this

The high sugar content creates high osmotic pressure/desert-like conditions within the jelly or jam. This is sufficient to prevent or hinder the growth of most bacteria and fungi.

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Sagun Singh answered this

because of the high sugar content in them. The sugar helps in maintaining a hypertonic environment and hence causes dessication of the microbes i.e. it removes water from them, required for their survival.

Arya answered this

Jams and jellies is are not attacked by bacteria and fungi because of the high sugar content in them the sugar helps in maintaining a hypotonic environment and hence causes dessiciation of the microbes that is to remove water from them required for their survival

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Kavan Daftary answered this

may be because they are semi solid
and virus and bacteria may be attacking solids only

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John Cena answered this

Because of high sugar content which absorb water from microbes body,which is the most important thing to live otherwise they can't survive.

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Mano answered this

one of the reason is
due to preservatives present in jam like Pectin

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Aviral Chaiuhan answered this

Because they are red in colour

Aviral Chaiuhan answered this

The high sugar content creates high osmotic pressure/desert-like conditions within the jelly or jam. This is sufficient to prevent or hinder the growth of most bacteria and fungi.

However, there are some bacteria and fungi that are able to grow in such conditions and will happily colonize and decompose the jam or jelly.

Anannya Oberoi answered this

Because they have excess of sugar or salt content due to which they are hypertonic .When a bacteria or microbe comes in contact exosmosis occurs and water from the body of microbe starts moving out making its body plasmolysed and ultimately dehydrated.Hence it dies. Hope it helps you.