A grape is a fruit, it is botanically a berry, of the deciduous woody vines of the flowering plant belongs to genus Vitis. Grapes can be eaten fresh as table grapes or they can be used for making wine, jam, grape juice, jelly, grape seed extract, raisins, vinegar, and grape seed oil.
Grapes grow in clusters of 15 to 300, and can be crimson, black, dark blue, yellow, green, and pink. “White” grapes are actually green in color, and are evolutionarily derived from the purple grape. Mutations in two regulatory genes of white grapes turn off production of anthocyanins, which are responsible for the color of purple grapes. Anthocyanins and other pigment chemicals of the larger family of polyphenols in purple grapes are responsible for the varying shades of purple in red wines. Grapes are typically an ellipsoid shape resembling a prolate spheroid.
Nutritional value of grapes
Grapes are high in several important nutrients.
One cup (151 grams) of red or green grapes contains the following nutrients (1):
Carbs: 27.3 grams
Protein: 1.1 grams
Fat: 0.2 grams
Fiber: 1.4 grams
Vitamin C: 27% of the Reference Daily Intake (RDI)
Vitamin K: 28% of the RDI
Thiamine: 7% of the RDI
Riboflavin: 6% of the RDI
Vitamin B6: 6% of the RDI
Potassium: 8% of the RDI
Copper: 10% of the RDI
Manganese: 5% of the RDI
Health benefits of grapes
Grapes are a sweet, low-fat and low-calorie fruit. If you are trying to reduce your intake of processed foods or added sugars, grapes can be a good substitute. Most of the health benefits of grapes come from the vitamins they contain.
Fast facts about grapes
- The nutrients in grapes may help protect against cancer, diabetes, eye problems, cardiovascular disease, and other health conditions.
- Resveratrol is a key nutrient in grapes that offer health benefits.
Help With Blood Clotting
Vitamin K is important for strong bones and blood clotting. If you take Coumadin (warfarin) or other blood thinners, your vitamin K intake should be consistent.
Grapes contain relatively large amounts of phytonutrients, especially flavonoids such as resveratrol (found in the skins of red grapes). Resvertraol has antioxidants that may help to lower the risk for high cholesterol, high blood pressure, blood clots, and heart disease.
Regulate Blood Sugar
Some research has shown that resveratrol can be helpful for people with type 2 diabetes. Resveratrol may improve glycemic control and decrease insulin resistance, both of which are beneficial for people with diabetes.
A diet that is rich in fruits and vegetables has been linked to a reduced risk of various conditions, including heart disease, diabetes, cancer.
Like other fruits and vegetables, grapes are a good source of fiber and water.
Antioxidants and other nutrients in grapes may make them particularly healthful, although more research is needed to confirm some of their benefits.
Grapes contain powerful antioxidants known as polyphenols. These are thought to have anti-inflammatory and antioxidant properties. One of these is resveratrol. It is found in the skins of red grapes.
Resveratrol is also present in red wine. Few studies have looked at the association between red wine and cancer risk in humans, but it has been shown that high intakes of alcohol on a consistent basis can increase risk of cancer. Moderation is key.
Another natural anti-inflammatory that occurs in grapes is the flavonoid quercetin.
Animal studies have indicated that quercetin and resveratrol may reduce the risk of antherosclerosis and protect against the damage caused by low-density lipoprotein (LDL), or “bad” cholestrol.
Grapes contain fiber and potassium, both of which support heart health.
Increasing potassium intake may help in reducing the negative effects of too much sodium in the diet.
Grapes have a high potassium ,they can help reduce the effects of sodium in people with high blood pressure.
Grapes contain good water and fiber. These can help people stay hydrated, keep bowel movements regular, and reduce the risk and can help to get rid of constipation.
Because of the anti-inflammatory effects of quercetin, that consuming grapes may help to alleviate symptoms of allergies, including runny nose, watery eyes.
However, those who consumed three servings a week of , grapes or pears had a 7-percent lower risk of type 2 diabetes compared with those who did not.
The relatively high level of sugar found in grapes leads some people to ask whether they are safe for people with diabetes to eat.