Yogurt is a nutrient rich by product of milk which is consumed by people from…
Grapes are a type of fruit that grow in clusters and are found in different colors such as crimson, black, dark blue, yellow, green, orange, and pink. "White" grapes are actually green in color, and are evolutionarily derived from the purple grape. The purple color of grapes is due to the presence of anthocyanins contained in it. Dried grapes are called raisins.
Muscadine grape vines are a grapevine species native to the southeastern United States. Muscadine grapes are rich sources of polyphenols and other nutrients studied for their potential health benefits. Muscadine grapes are notable for their highly pigmented thick skins and the content of polyphenols in it is known to be high.
The polyphenol antioxidant resveratrol is produced by many plants and it is found among grape varieties in wide amounts. It is a phytochemical and its benefits have been positively linked to many health benefits. Several in vitro studies have revealed the effectiveness of resveratrol in various diseases such as diabetes mellitus, cardiovascular disease, metabolic syndrome, obesity, inflammatory, neurodegenerative, and age‐related diseases.
Resveratrol is found primarily in the skin and seeds of grapes. Fresh grape skin contains about 50 to 100 micrograms of resveratrol per gram. Red wine typically contains between 0.2 and 5.8 mg/L, depending on a range of factors, while white wine has much less. . This is because most of the resveratrol in grapes is located in the skin of the grape, and red wine is fermented with the skins of the grape included, allowing the wine to absorb it; by contrast, white wine is fermented after the skins have been removed.
Resveratrol has anti fungal and other defensive properties . It can inhibit oxidation of low-density lipoproteins and aggregation of platelets and has anti-aging properties.
Results from a new study published in Free Radical Biology and Medicine suggest that eating grapes can slow or prevent age related blindness. The antioxidant actions of grapes are believed to be responsible for these protective effects.
"The protective effect of the grapes in this study was remarkable, offering a benefit for vision at old age even if grapes were consumed only at young age," said principal investigator Silvia Finnemann, PhD, Department of Biological Sciences, Fordham University in New York.
Results from her study suggest that age-related vision loss is a result of cumulative, oxidative damage over time. "A lifelong diet enriched in natural antioxidants, such as those in grapes, appears to be directly beneficial for RPE and retinal health and function."
Age-related macular degeneration is a progressive eye condition, leading to the deterioration of the center of the retina, called the macula. It is the leading cause of blindness in the elderly. Aging of the retina is associated with increased levels of oxidative damage, and oxidative stress is thought to play a pivotal role in the development of AMD.
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