Why should curd and sour substances not be kept in brass and copper vessels?

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Because curd and other sour substance contain acid therefore when they are kept in brass and copper vessel the metal react with the acid to liberate hydrogen gas and harmful products thereby may spoil the food.....

Answer

Why should curd and sour substances not be kept in brass and copper vessels?

Brass and copper vessels have been used for centuries due to their aesthetic appeal and excellent heat conductivity. However, when it comes to storing curd and sour substances, it is advisable to avoid using these vessels. Here are the reasons why:

1. Chemical reaction:
When curd or any sour substance comes in contact with brass or copper, a chemical reaction takes place. This reaction is known as galvanic corrosion or electrochemical corrosion. It occurs due to the difference in electrical potentials between the metal and the acidic substance. The acid acts as an electrolyte, which accelerates the corrosion process.

2. Formation of toxic compounds:
During the chemical reaction, the acidic nature of curd or sour substances tends to dissolve the copper and zinc present in brass vessels. This dissolution leads to the formation of toxic compounds such as copper sulfate, copper chloride, and zinc chloride. These compounds can be harmful to human health when consumed, as they can cause various health issues, including nausea, vomiting, and diarrhea.

3. Loss of nutritional value:
Storing curd and sour substances in brass or copper vessels can result in a loss of nutritional value. The corrosion process not only affects the vessel but also reacts with the food, altering its composition. Essential nutrients like vitamin C and proteins present in curd can be affected, leading to a decrease in their nutritional content.

4. Change in taste and flavor:
Another reason to avoid storing curd and sour substances in brass or copper vessels is the alteration in taste and flavor. The reaction between the acidic substance and the metal can impart a metallic taste to the food. This can significantly impact the overall taste and aroma of the curd, making it unappetizing.

5. Health hazards:
Consuming curd or sour substances stored in brass or copper vessels regularly can pose serious health hazards. The toxic compounds formed during the chemical reaction can accumulate in the body over time and lead to long-term health issues. Prolonged exposure to these compounds may cause liver and kidney damage, gastrointestinal disorders, and even neurological problems.

Therefore, it is essential to use suitable containers like glass, ceramic, or food-grade stainless steel for storing curd and sour substances. These materials do not react with acidic substances and ensure the safety and nutritional value of the food.

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Why should curd and sour substances should not be kept in brass and copper vessels?

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