Apples
A round fruit with red, yellow, or green skin, with firm white flesh surrounding a core with small seeds.
Fruit of the genus Malus, in the rose family, the most widely cultivated tree fruit. Malus species are native to the temperate zones of both hemispheres. They require a considerable period of dormancy, well-drained soil, careful pruning in early years of growth, and a rigorous pest-management program for mature trees. The apple is one of the pome (fleshy) fruits. Apples at harvest vary widely in size, shape, colour, and acidity, but most are fairly round and some shade of red or yellow. The thousands of varieties fall into three broad classes: cider, cooking, and dessert varieties. Varieties that ripen in late summer generally do not store well, but those that ripen in late autumn may be stored for as long as a year. The largest producers of apples are the U.S., China, France, Italy, and Turkey. Eaten fresh or cooked in various ways, apples provide vitamins A and C, carbohydrates, and fibre.
45 million tonnes of apples were grown worldwide in 2002, with a value of about 10 billion USD. China produced almost half of this total. Argentina is the second leading producer, with more than 15% of the world production. The United States is the third leading producer, accounting for 7.5% of world production. Turkey is also a leading producer. France, Italy, South Africa and Chile are among the leading apple exporters.
In the United States, more than 60% of all the apples sold commercially are grown in Washington state. Imported apples from New Zealand and other more temperate areas are competing with US production and increasing each year.
An old proverb attests to the health benefits of the fruit: 'An apple a day keeps the doctor away.' Research suggests that apples may reduce the risk of colon cancer, prostate cancer and lung cancer. Like many fruits, apples contain Vitamin C as well as a host of other antioxidant compounds, which may reduce the risk of cancer by preventing DNA damage. The fibre content, while less than in most other fruits, helps regulate bowel movements and may thus reduce the risk of colon cancer. They may also help with heart disease, weight loss and controlling cholesterol, as they do not have any cholesterol, have fibre (which reduces cholesterol by preventing reabsorption), and are bulky for their caloric content like most fruits and vegetables.
A group of chemicals in apples could protect the brain from the type of damage that triggers such neurodegenerative diseases as Alzheimer's and Parkinsonism. Chang Y. 'Cy' Lee of the Cornell University found that the apple phenolics, which are naturally occurring antioxidants found in fresh apples, can protect nerve cells from neurotoxicity induced by oxidative stress. The researchers used red delicious apples from New York State to provide the extracts to study the effects of phytochemicals. Lee said that all apples are high in the critical phytonutrients and that the amount of phenolic compounds in the apple flesh and in the skin vary from year to year, season to season and from growing region to growing region (November/December 2004 issue of the Journal of Food Science). The predominant phenolic phytochemicals in apples are quercetin, epicatechin, and procyanidin B2 (PMID 14558772).