Antioxidants are compounds in foods and beverages that can help protect healthy cells from the damaging effects of oxidative stress, a condition that may, over time, have an impact on health. Vitamins C, E, and A (as beta-carotene), and the mineral selenium, as well as certain phytonutrients (such as polyphenols), can act as antioxidants.
Concord grape is a hearty American grape with a thick, dark purple skin and seeds that naturally have plant nutrients (phytonutrients) called polyphenols. Not only do polyphenols give Concord grapes their vibrant color, but these plant nutrients also act as antioxidants and deliver other benefits to promote health. Seedless grapes, like table grapes, do not appear to contain the same quantity of these polyphenols.
The circulatory system is composed of the heart, arteries, capillaries, and veins. The circulatory system is like a map of thousands of miles of highways that move blood through the body.
Free Radicals are atoms or groups of atoms that have one or more unpaired electrons. They are a normal part of everyday life and are produced during activities like exercising or digestion (when our bodies convert food into energy). Free radicals are highly reactive, but our bodies have a natural defense system – so in small numbers, they are not a big problem. However, exposure to certain environmental factors like pollution and UV radiation can also trigger the formation of free radicals. And, when there are too many free radicals for our bodies to protect against, they can set off a damaging chain reaction, which in turn can result in oxidative stress.
Flavonoids are the largest and most studied sub-group of polyphenols and represent the vast majority of the polyphenols found in both the Niagara and Concord grapes. There are thousands of different flavonoids in fruits, vegetables and certain plant-derived beverages (i.e. teas and juices). Many of these flavonoids act as antioxidants and are becoming popular because of growing science that suggests flavonoids may have health-supporting effects.
Niagara grape is a hearty American grape, and like its cousin the Concord, it is a seeded grape with natural plant nutrients (phytonutrients) called polyphenols. Seedless grapes, like table grapes, do not appear to contain the same quantity of these potentially health-supporting phytonutrients.
Nitric oxide (NO)
Nitric oxide (NO) is a molecule produced in the body that helps blood vessels to relax, causing them to expand and keep blood flowing freely.
Oxidative Stress is a condition that can damage healthy cells. It has been identified as a possible contributor to certain chronic health problems.
Phytonutrients are plant-based nutrients that appear to have health-supporting effects but are not considered essential for human survival. Fruits, vegetables, grains, legumes, nuts, and teas have these compounds which are being actively studied for their potential impact on health.
Polyphenols are a sub-group of phytonutrients. They are found in foods like onions, tea, red wine, grapes, and certain nuts. Polyphenols naturally protect plants against pathogens, parasites, and predators, and often contribute to the flavor and color of fruits and vegetables. Research suggests that polyphenols are responsible for the Concord grape’s heart-health benefits.
Resveratrol is a natural compound (a polyphenol) that can sometimes be found in the skin of grapes with more found in dark grapes found in cooler climates, with less sunlight and more rainfall. Certain plants produce resveratrol in response to environmental stress like fungal infections. Scientists became interested in studying resveratrol as part of the possible link to the French Paradox.