Among the following which has the highest quantity of retinal per 100 g of fruit ?
**Core Concept**
The question is asking about the retinal content in various fruits. Retinal is a form of vitamin A, an essential nutrient for vision, immune function, and skin health. It is particularly abundant in animal-derived foods and some plant-based foods.
**Why the Correct Answer is Right**
Retinal is found in significant amounts in certain fruits, particularly those with high carotenoid content. Among the options, papaya is known to have a high concentration of beta-carotene, which can be converted to retinal in the body. This is due to the presence of alpha-carotene and beta-carotene isomers in papaya, which are potent precursors to retinal. The high retinal content in papaya is attributed to its high levels of these carotenoids.
**Why Each Wrong Option is Incorrect**
**Option A:** The other options do not have significant amounts of retinal. While they may contain other carotenoids, their retinal content is not as high as papaya.
**Option B:** Fruits like strawberries and blueberries have relatively low retinal content compared to papaya.
**Option C:** Apples and bananas are not known to have high retinal content and are often lower in carotenoids.
**Clinical Pearl / High-Yield Fact**
Papaya, along with other fruits rich in carotenoids, can contribute to the body's retinal stores, supporting eye health and immune function.
**Correct Answer:** . Papaya.