Wonderfully delicious and juicy, plums botanically belong to the Rosaceae family of "drupe" fruits in the genus, Prunus. Other fellow Prunus members include peaches, nectarine, almonds, and damson. Scientific name: Prunus domestica.
The plant is best described as a small tree or large shrub. It is widely cultivated at commercial scale in the United States, Europe, Japan, and China. Several cultivars of plums are grown all over the world which differ in their color, size and growth characteristics. Generally, each variety of the plum tree bears numerous, almost same sized berries between May and September months.
|Plum, close view.||Fresh plum fruits in a tray.|
|Plums!. Note for white, surface bloom.
Photo courtesy: brankomaster
Photo courtesy: Rowena
Plum is about the size of an average tomato, measuring about 5-6 cm in diameter and weigh about 50-70 g. It features central umbilicated depression at the stem end. Internally, its pulp is sweet, juicy, succulent and varies widely from creamy yellow (mirabelle), crimson, light-blue or light-green (greengages or Reine claude plums) in color depending upon the cultivar type.
As with other members of the "drupe" family fruits, plum also features a centrally placed single, smooth, flat, but hard pit. Seeds are inedible.
Plums have a sweet and tart taste with a pleasant aroma. Some of the other common cultivars are cherry plum, damson, and blackthorn plum.
Plums are low in calories (46 calories per 100 g) and contain no saturated fats; however, they hold numerous health promoting compounds, antioxidants, minerals, and vitamins.
Certain health benefiting compounds present in the plums such as dietary fiber, sorbitol, and isatin have been found to help regulate the smooth digestive system functioning, and thereby, help relieve constipation problems.
The total antioxidant strength of plums measured in terms of ORAC (Oxygen radical absorbance capacity) is 6259 μmol TE/100 g. Fresh berries are a modest source of vitamin-C which is also a powerful natural antioxidant. Consumption of foods rich in vitamin-C helps the body develop resistance against infectious agents, counter inflammation and scavenge harmful free radicals.
Fresh plums, especially yellow mirabelle, are a moderate source of vitamin-A and β -carotene. Vitamin-A is essential for good eyesight. It also required for maintaining healthy mucosa and skin. Consumption of natural fruits rich in vitamin-A has found to protect from lung and oral cavity cancers.
The fruit also has health promoting flavonoid poly phenolic antioxidants such as lutein, cryptoxanthin, and zeaxanthin in significant amounts. These compounds help act as scavengers against oxygen-derived free radicals and reactive oxygen species (ROS) that play a role in aging and various disease processes. Zeaxanthin, an important dietary carotenoid selectively absorbed into the retinal macula lutea where it is thought to provide antioxidant and protective UV light-filtering functions.
Plums are plentiful in minerals like potassium, fluoride and iron. Iron is required for red blood cell formation. Potassium is an important component of cell and body fluids that helps controlling heart rate and blood pressure.
Also, they are modest sources of B-complex groups of vitamins such as niacin, vitamin B-6, and pantothenic acid. These vitamins acts as cofactors help the body metabolize carbohydrates, protein, and fats. They also provide about 5% RDA levels of vitamin-K. Vitamin-K is essential for the functioning of many clotting factors in the blood vessels as well as in bone metabolism. It also helps in limiting the neuronal damage in Alzheimer's disease patients.
|Principle||Nutrient Value||Percentage of RDA|
|Total Fat||0.28 g||1%|
|Dietary Fiber||1.40 g||3.5%|
|Pantothenic acid||0.135 mg||3%|
|Vitamin A||345 IU||11.5%|
|Vitamin C||9.5 mg||16%|
|Vitamin E||0.26 mg||2%|
|Vitamin K||6.4 μg||5%|
Plums can be available year around, but they are at their best between May until September. In the stores, look for fresh fruits featuring rich color and may still have a slight whitish "bloom" on their surface indicating fresh harvest.
Avoid those with excess softness, or with cuts or bruises. Ripe fruits just yield to gentle pressure and feature a sweet aroma.
Slightly hard but mature plums can be kept at the room temperature until they completely ripen. Once ready, they can be placed in the refrigerator but should be brought back to room temperature before being consumed in order to enjoy their rich natural flavor. Dry plums (prunes) can be stored at room temperature for few days.
Wash plums in cold running water just before using. Fresh ripe plum can be enjoyed as is, with its peel.
|Cut section and pit.|
Incise lengthwise deep into the flesh until its hard seed resistance felt, and then remove the pit. The skin may be peeled off using a paring knife as in apples. However, its peel not only provides good fiber but also carries some of the health benefiting antioxidant pigments. Therefore, just wash the fruit and enjoy without discarding the peel. They can also be baked or stewed.
Here are some serving tips:
Plum sections can be a great addition to salads.
The fruits are being used in the preparation of pie, desserts, jams, and jellies.
They can also be used in a variety of recipes and are usually baked or poached.
Plums contain oxalic acid, a naturally-occurring substance found in some fruits and vegetables, which may crystallize as oxalate stones in the urinary tract in some individuals. Therefore, people with known oxalate urinary tract stones are advised to avoid eating plums. Adequate intake of water is advised to maintain normal urine output even if these people want to eat them. (Medical disclaimer).
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Further reading and Resources:
Stanford School of Medicine Cancer information Page- Nutrition to Reduce Cancer Risk.