So, the conclusion are?
Retinal is important compound for our body. It can found at our eyes. The founder of retinal are :
1. George David Wald (1906-1997)
An American scientist who studied pigments in the retina. He won a share of the 1967 Nobel Prize in Physiology or Medicine with Haldan Keffer Hartline and Ragnar Granit.
As a postdoctoral researcher, Wald discovered that vitamin A was a component of the retina.
2. Hadlan Keffer Hartline (1903-1983)
An American physiologist who was a co-recipient (with George Wald and Ragnar Granit)
3. Ragnar Arthur Granit (1900-1991)
A Swedish-speaking Finnish and later Swedish scientist who was awarded the Nobel Prize in Physiology or Medicine in 1967 along with Haldan Keffer Hartline and George Wald "for their discoveries concerning the primary physiological and chemical visual processes in the eye".
Retinal is also known as retinaldehyde. It was originally called retinene, and renamed after it was discovered to be vitamin A aldehyde. Retinal is one of the many forms of vitamin A (the number of which varies from species to species). Retinal is a polyene chromophore, bound to proteins called opsins, and is the chemical basis of animal vision. Retinal allows certain microorganisms to convert light into metabolic energy.
We should consume foods that contain vitamin A. Because, vitamin A is one subtance that generally can't be produced by the body itself. There are vegetables, fruits and foods contain vitamin A that we can consume:
Source of vitamin A is can find in :
1.Fruits contain vitamin A
2.Vegetables contain vitamin A
3.Tubers containing vitamin A
4.Nuts containing Vitamin A
5.Animal Sources Vitamin A
| Vegetables |
Fruit |
Foods |
| Tomato |
Carrot |
Milk |
| Red Peppers |
Banana |
Cheese |
| Spinach |
Papaya |
Butter |
Warning signs of a Vitamin A Deficiency
If one is not getting enough vitamin A, you may experience the following:
Frequent and persistent skin infections
Acne, dry and scaly skin
Throat infections or mouth ulcers
Dandruff and dry hair
Sore eyelids and in extreme cases poor vision in the dark (night blindness)
The conclusion is, retinal is a part of vitamin A. We need vitamin A, but not too much. Because it will cause some troubles in our body