few lines on watermelon
Answers
A watermelon is actually a large, oval fruit with green skin and it has pulpy red color flesh and black seeds.
This fruit is rich in water content and adds hydration process to the human being.
They are 92% water and related to the cucumbers and other fruits.
It consists of vitamin A, Vitamin C, and Vitamin B6 and vitamin B1.
Explanation:
When we think about well-known phytonutrients, the category of carotenoids comes quickly to mind. Within that category, we might think first about beta-carotene. But soon after, we are likely to make mention of lycopene: the carotenoid that is best-known for its rich concentration in tomatoes. But it is not only tomatoes that we might want to consider as a concentrated source of lycopene. Recent studies have made it clear that, on average, red-fleshed watermelon is more concentrated in lycopene than red tomatoes. While both foods are top-rated sources of this carotenoid, red-fleshed watermelons typically average between 4–5 milligrams of lycopene in every 100 grams (approximately two-thirds cup in volume), while red tomatoes usually contain about 3–4 milligrams per 100 grams (approximately 1/2 cup in volume). Moreover, the bioavailable of lycopene from red-fleshed watermelon appears to be greater than its bioavailability from red tomato. This greater bioavailability may be to do the presence of cis-isomeric lycopene in watermelon, which is a more readily available form of this carotenoid.
We were fascinated to see a recent study on consumption of watermelon puree by a group of endurance athletes (trained cyclists) wanting to reduce their risk of post-exercise oxidative stress and inflammation. These cyclists were participating in 15.5-mile time trial on a mountainous course and they consumed about one quart of watermelon puree every 15 minutes while riding in the trial. (A control group of riders consumed a sports beverage containing a similar level of total carbs.) The researchers determined that the antioxidant capacity in the riders' bloodstreams was significantly increased post-exercise through consumption of the watermelon puree. While no significant change was found in the inflammatory markers measured in the cyclists' bloodstreams, the researchers speculated that a longer-term study (not based on a single time trial) would have shown anti-inflammatory benefits. They also specifically noted the solid job done by watermelon puree in providing cyclists with needed energy, as witnessed by the equally strong performance of cyclists in the watermelon group. While few of us would typically compare our meal plans or nutrient needs to the intake of an endurance athlete, it is inspiring to see the principle of nutrient-richness in a natural food paying dividends in this highly-demanding sports context.
While watermelon might not rank very high on your personal list of foods with great diversity, this fruit is far more diverse than many people suspect. This diversity includes different flesh colors (pink, red, yellow, and orange), rind patterns (solid and striped), shapes (round, oval, oblong), sizes (5–30 pounds), and nutrient patterns. Recent studies have helped to clarify some of the diversity in nutrient patterns. Specifically, total phenols (including total flavonoids) and vitamin C can vary significantly from variety to variety as well as degree of ripening. In other words, it's not always possible to predict the concentration of these nutrients in watermelon based solely on the variety or solely on the stage or ripening. One apparent exception to this rule is lycopene. The amount of lycopene in watermelon can be predicted from variety and from degree of ripening. Orange and yellow-fleshed watermelons consistently have less lycopene that red-fleshed varieties. In addition, red-fleshed varieties contain more lycopene when allowed to fully ripen. As most red-fleshed varieties ripen, their flesh color changes from white to white-pink to pink to red, and along with each of these color changes comes an increased amount of lycopene. If you are seeking to get the most possible lycopene from your watermelon, you'll want to choose fully-ripened, red-fleshed varieties. However, it's important to remember that all varieties of watermelon can provide you with some great nutrient benefits, and not all nutrients reach maximum concentration along with maximal ripeness. However, you'll typically want to make sure that a watermelon is sufficiently ripe before purchasing it in order to receive great texture and flavor from this fruit. You will find detailed guidelines for choosing watermelons in our How to Select and Store section.