Resveratrol was first isolated in the 1940 by a scientist names Takaoka. It is the equivalent of the immune system in the human body. It therefore plays an active role in preventing the development of pathogens that affect plants.
Pathogens are simply the unwanted guests to plants or animals. An example of a pathogen in human include bacteria or protozoan or viruses. Therefore most pathogens including those that affect plants are likely to be parasitic. In this sort of a relationship, the parasite lives or survives at the expense of the host (the animal or plant that from which the pathogen gets its food, shelter and security.
Resveratrol is therefore the eliminator of the unwelcomed guests in the plants. There are more than 70 species of the plants that have been shown to use this chemicals emitted from its bark to keep of the pathogens. The most common include those that get affected or infected by bacteria or fungi. While some of the guest plant may be beneficial, majority of them are parasitic. This is why the plant should be able to eliminate the parasitic plants.
The high presence of fungi and bacteria that may be parasitic to the plants demands that each plant be able to fend off their attack. Just like among the human and other animals, the presence of the fungi and bacteria would affect the plant adversely and decrease productivity.
This therefore means that every crop or plant would need to produce the chemical. There are several other factors that one would consider before settling in what is supposed to be the best source.
Among the religiously adherents of resveratrol, the best source of this food supplement is the red wine. This has been proven by scientific studies both in the test-tube and the lab animals. The quantity in grape tree is relatively small though adequate. The best source of this wonder plant product is therefore grape fruits. Do not take the pulp and through away the outer most cover, this is because all the good thing element of the plant such as the medicinal value are stored on the plant leaves or fruits.
Japanese Knot weed is known to also provide a very good source of this plant immune factor. This is infact one of the first sources of this product to have ever been identified about four decades ago. The grape skin however appears to be the best source of the food supplement that is known to enhance quality of life.
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