Answer: food preservatives are compound that prevents spoilage caused by microorganisms or by chemical change. These preservatives are manmade or natural. For jam, jelly, pickles, fruit juice, ketchup- benzoic acid, sodium benzoate, sodium meta bisulfate. frozen food items do not require preservatives because food below the temperature of -95 degrees then the growth of microbes is prohibited. carboxymethylcellulose is a stabilizer that is added to frozen food as it will not disturb the nature of the product.
In ice cream, the preservatives added are- nitrites and nitrates these are used to prevent bacterial growth and to improve color, flavor. some chemicals used in ice cream preservation are- magnesium hydroxide, potassium sorbate, and polysorbate 80.
benzoic acid harmful effect - crack the skin
sodium benzoate harmful effect - vomiting, nausea, rhinitis, migraine.
nitrite in food is harmful because it forms the compound in the body called nitrosamines which cause cancer.
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