Which of the following is NOT TRUE regarding refining of oils?
**Core Concept**
Refining of oils is a process that involves removing impurities and improving the quality of edible oils. This process involves degumming, neutralization, bleaching, and deodorization to produce a product with a better taste, texture, and shelf life.
**Why the Correct Answer is Right**
The refining process is essential for removing phospholipids, free fatty acids, and other impurities that can affect the texture and taste of the oil. Neutralization involves adding an alkaline substance to neutralize the free fatty acids, while bleaching removes any remaining impurities. Deodorization involves removing volatile compounds that can affect the smell of the oil. All these steps are crucial for producing a refined oil.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because refining does not involve adding new impurities to the oil. In fact, the refining process is designed to remove impurities.
**Option B:** This option is incorrect because refining does not involve changing the chemical composition of the oil. The refining process is aimed at removing impurities, not altering the molecular structure of the oil.
**Option C:** This option is incorrect because refining does not involve removing beneficial nutrients from the oil. In fact, refining is designed to preserve the nutritional value of the oil.
**Clinical Pearl / High-Yield Fact**
Refining of oils can remove beneficial nutrients like vitamin E, which is an antioxidant that helps protect against cell damage. However, most commercial oils are refined to improve their shelf life and taste.
**Correct Answer: D. Refined oils have a longer shelf life and better taste.**