Question

define rancidity what kind of substance are used to prevent explain any two way to prevent rancidity​

Answer 1

Answer:

The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called as Rancidity.

• Rancidity can be prevented by:
• By adding antioxidants : Antioxidants are the substances which prevent oxidation. The two antioxidants used are BHT[Butylated Hydroxy -Toluene]
• and BHA [ Butylated Hydroxy Anisole]
• Rancidity cane be retartded by storing food in air tight containers.
• Rancidity can be prevented by packing food items containing fats and oils in nitrogen gas.

Answer 2

⏭ Here, are your answers:

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Oxidation in nature damages many things including fatty foods and oils. When the food materials prepared in fast and oils are kept for a longer period of time, they starts giving unpleasant smell due to oxidation, this is known as Rancidity.

✳ Reason:

With due time, many food materials containing fats and oils get oxidised in the presence of oxygen in the atmosphere. Hence, it is also known as Aerial Oxidation. This leads to unpleasant smell and taste which is known as Rancidity.

✳ Substances that prevents:

It is obvious that, we will use antioxidants to prevent the oxidation of these food materials. The antioxidants are actually reducing agents. When they are added to the food materials, they don't get oxidises and hence they do not turn rancid. So, it remains fresh for longer time.

✏ Examples of Antioxidants:

• BHA (Butylated Hydroxy-Anisole)
• BHT (Butylated Hydroxy Toluene)

✳ Ways to prevent rancidity:

• By adding antioxidants.
• By packaging in Nitrogen gas(N2).
• By keeping food in refrigerator.
• By storing in air-tight containers.
• By keeping away from light.

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