Peter Reinhart: BREAD: TED Talk - Documentary, Lecture, Talk STAPLE FOOD

Channel: 7117morris   |   2012/03/21
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Peter Reinhart: BREAD: TED Talk - Documentary, Lecture, Talk STAPLE FOOD
Peter Reinhart: BREAD: TED Talk - Documentary, Lecture, Talk STAPLE FOOD
::2012/03/21::
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From Wikipedia, the free encyclopedia
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Various types of potatoes

A staple food, sometimes simply referred to as a staple, is a food that is eaten routinely and in such quantities that it constitutes a dominant portion of a standard diet in a given population, supplying a large fraction of the needs for energy-rich materials and generally a significant proportion of the intake of other nutrients as well. Most people live on a diet based on just a small number of staples.[1]

Staple foods vary from place to place, but typically they are inexpensive or readily available foods that supply one or more of the three organic macronutrients needed for survival and health: carbohydrates, proteins, and fats. Typical examples of staples include tuber- or root-crops, grains, legumes, and other seeds. The staple food of a specific society may be eaten as often as every day, or every meal. Early agricultural civilizations valued the foods that they established as staples because, in addition to providing necessary nutrition, they generally are suitable for storage over long periods of time without decay. Such storable foods are the only possible staples during seasons of shortage, such as dry seasons or cold-temperate winters, against which times harvests have been stored; during seasons of plenty wider choices of foods may be available.

Most staple plant foods are derived either from cereals such as wheat, barley, rye, maize, or rice, or starchy tubers or root vegetables such as potatoes, yams, taro, and cassava.[2] Other staple foods include pulses (dried legumes), sago (derived from the pith of the sago palm tree), and fruits such as breadfruit and plantains.[3] Staple foods may also contain, depending on the region, sorghum, olive oil, coconut oil and sugar.[4][5][6] Most staples are plant materials, but in some communities fishing is the primary source of nutrition.[7]

Demographic profile of staple foods[edit]

Energy consumed per person in 1979
Average kcal/person/day, 1979-1981
Energy consumed per person in 2001
Average kcal/person/day, 2001-2003
Food energy consumption per person, per day, worldwide. Except for war-torn countries, the world is eating more staples per capita per day, despite rising world population.

Of more than 50,000 edible plant species in the world, only a few hundred contribute significantly to human food supplies. Just 15 crop plants provide 90 percent of the world's food energy intake (exclusive of meat), with rice, maize and wheat comprising two-thirds of human food consumption. These three alone are the staples of over 4 billion people.[8]

Although there are over 10,000 species in the cereal family, just a few have been widely cultivated over the past 2,000 years. Rice alone feeds almost half of humanity. Roots and tubers are important staples for over 1 billion people in the developing world; accounting for roughly 40 percent of the food eaten by half the population of sub-Saharan Africa. Cassava is another major staple food in the developing world, providing a basic diet for around 500 million people. Roots and tubers are high in carbohydrates, calcium and vitamin C, but low in protein.

The staple food in different parts of the world is a function of weather patterns, local terrain, farming constraints, acquired tastes and ecosystems. For example, the main energy source staples in the average African diet are cereals (46 percent), roots and tubers (20 percent) and animal products (7 percent). In Western Europe the main staples in the average diet are animal products (33 percent), cereals (26 percent) and roots and tubers (4 percent). Similarly, the energy source staples vary widely within different parts of India, with its colder climate near Himalayas and warmer climate in its south.

Most of the global human population lives on a diet based on one or more of the following staples: rice, wheat, maize (corn), millet, sorghum, roots and tubers (potatoes, cassava, yams and taro), and animal products such as meat, milk, eggs, cheese and fish. Regional staple foods include rye, soybeans, barley, oats, and teff.

With economic development and free trade, many countries have shifted away from low-nutrient density staple foods to higher nutrient density staple foods, as well as towards greater meat consumption. Despite this trend, there is growing recognition of the importance of traditional staple crops in nutrition. Efforts are underway to identify better strains with superior nutrition, disease resistance and higher yields.

Some foods such as quinoa - pseudocereal grains that originally came from the Andes - were also staple foods centuries ago.[9] Oca, ulluco and amaranth seed are other foods claimed to be a staple in Andean history.[10] Similarly, pemmican was a staple of the Plains Indians of North America.[11] The global consumption of specialty grains such as quinoa, in 2010, was very small compared to other staples such as rice, wheat and maize. These once popular, then forgotten grains are being reevaluated and reintroduced.

Ten staples that feed the world (by annual production)[12]
World production
2008
Average world yield
2010
World's most productive farms
2012[13]
Rank Crop (metric tons) (tons per hectare) (tons per hectare)[14] Country
1 Maize (Corn) 823 million 5.1 25.9 Saint Vincent and the Grenadines
2 Wheat 690 million 3.1 8.9 New Zealand
3 Rice 685 million 4.3 9.5 Egypt
4 Potatoes 314 million 17.2 45.4 Netherlands
5 Cassava 233 million 12.5 34.8 India
6 Soybeans 231 million 2.4 4.4 Egypt
7 Sweet potatoes 110 million 13.5 33.3 Senegal
8 Sorghum 66 million 1.5 86.7 United Arab Emirates
9 Yams 52 million 10.5 28.3 Colombia
10 Plantain 34 million 6.3 31.1 El Salvador

Refining[edit]

Rice is most commonly eaten as cooked entire grains, but most other cereals are milled into flour or meal which is used to make bread; noodles or other pasta; and porridges and "mushes" such as polenta or mealie pap. Mashed root vegetables can be used to make similar porridge-like dishes, including poi and fufu. Pulses (particularly chickpeas) and starchy root vegetables, such as Canna, can also be made into flour.[citation needed]

Part of a whole[edit]

Maize, the most produced food staple in the world.

Although nutritious, vegetable staples generally do not by themselves provide a full range of nutrients, so other foods need to be added to the diet to ward off malnutrition. For example, the deficiency disease pellagra is associated with a diet consisting primarily of maize, and beriberi with a diet of white (i.e., refined) rice.[15]

Nutritional content[edit]

The following table shows the nutrient content of major staple vegetable foods in a raw form. Raw grains, however, are not edible and cannot be digested. These must be sprouted, or prepared and cooked for human consumption. In sprouted and cooked form, the relative nutritional and anti-nutritional contents of each of these grains is remarkably different from that of raw form of these grains reported in this table.

Nutrient content of major staple foods[16]
STAPLE: Maize / Corn[A] Rice[B] Wheat[C] Potato[D] Cassava[E] Soybean (Green)[F] Sweet potato[G] Sorghum[H] Yam[Y] Plantain[Z]
Component (per 100g portion) Amount Amount Amount Amount Amount Amount Amount Amount Amount Amount
Water (g) 10 12 13 79 60 68 77 9 70 65
Energy (kJ) 1528 1528 1369 322 670 615 360 1419 494 511
Protein (g) 9.4 7.1 12.6 2.0 1.4 13.0 1.6 11.3 1.5 1.3
Fat (g) 4.74 0.66 1.54 0.09 0.28 6.8 0.05 3.3 0.17 0.37
Carbohydrates (g) 74 80 71 17 38 11 20 75 28 32
Fiber (g) 7.3 1.3 12.2 2.2 1.8 4.2 3 6.3 4.1 2.3
Sugar (g) 0.64 0.12 0.41 0.78 1.7 0 4.18 0 0.5 15
Calcium (mg) 7 28 29 12 16 197 30 28 17 3
Iron (mg) 2.71 0.8 3.19 0.78 0.27 3.55 0.61 4.4 0.54 0.6
Magnesium (mg) 127 25 126 23 21 65 25 0 21 37
Phosphorus (mg) 210 115 288 57 27 194 47 287 55 34
Potassium (mg) 287 115 363 421 271 620 337 350 816 499
Sodium (mg) 35 5 2 6 14 15 55 6 9 4
Zinc (mg) 2.21 1.09 2.65 0.29 0.34 0.99 0.3 0 0.24 0.14
Copper (mg) 0.31 0.22 0.43 0.11 0.10 0.13 0.15 - 0.18 0.08
Manganese (mg) 0.49 1.09 3.99 0.15 0.38 0.55 0.26 - 0.40 -
Selenium (μg) 15.5 15.1 70.7 0.3 0.7 1.5 0.6 0 0.7 1.5
Vitamin C (mg) 0 0 0 19.7 20.6 29 2.4 0 17.1 18.4
Thiamin (mg) 0.39 0.07 0.30 0.08 0.09 0.44 0.08 0.24 0.11 0.05
Riboflavin (mg) 0.20 0.05 0.12 0.03 0.05 0.18 0.06 0.14 0.03 0.05
Niacin (mg) 3.63 1.6 5.46 1.05 0.85 1.65 0.56 2.93 0.55 0.69
Pantothenic acid (mg) 0.42 1.01 0.95 0.30 0.11 0.15 0.80 - 0.31 0.26
Vitamin B6 (mg) 0.62 0.16 0.3 0.30 0.09 0.07 0.21 - 0.29 0.30
Folate Total (μg) 19 8 38 16 27 165 11 0 23 22
Vitamin A (IU) 214 0 9 2 13 180 14187 0 138 1127
Vitamin E, alpha-tocopherol (mg) 0.49 0.11 1.01 0.01 0.19 0 0.26 0 0.39 0.14
Vitamin K1 (μg) 0.3 0.1 1.9 1.9 1.9 0 1.8 0 2.6 0.7
Beta-carotene (μg) 97 0 5 1 8 0 8509 0 83 457
Lutein+zeaxanthin (μg) 1355 0 220 8 0 0 0 0 0 30
Saturated fatty acids (g) 0.67 0.18 0.26 0.03 0.07 0.79 0.02 0.46 0.04 0.14
Monounsaturated fatty acids (g) 1.25 0.21 0.2 0.00 0.08 1.28 0.00 0.99 0.01 0.03
Polyunsaturated fatty acids (g) 2.16 0.18 0.63 0.04 0.05 3.20 0.01 1.37 0.08 0.07
A corn, yellow B rice, white, long-grain, regular, raw, unenriched
C wheat, hard red winter D potato, flesh and skin, raw
E cassava, raw F soybeans, green, raw
G sweet potato, raw, unprepared H sorghum, raw
Y yam, raw Z plantains, raw

Note: The highlighted value is the highest nutrient density amongst these staples. Other foods of the world, consumed in smaller quantities, may have nutrient densities higher than these values.

Production[edit]

Most staple food is produced using modern farming practices. However, the yield of staple food from Organic farming is growing.

Gallery of food staples[edit]

See also[edit]

References[edit]

  1. ^ United Nations Food and Agriculture Organization: Agriculture and Consumer Protection. "Dimensions of Need - Staples: What do people eat?". Retrieved 2010-10-15. 
  2. ^ Staple foods — Root and Tuber Crops
  3. ^ Staple Foods II -- Fruits
  4. ^ African food staples
  5. ^ About olive oil
  6. ^ About sugar and sweeteners
  7. ^ Fish as Food
  8. ^ "Dimensions of Need: An atlas of food and agriculture". Food and Agriculture Organization of the United Nations. 1995. 
  9. ^ E.A. Oelke et al. "Quinoa". University of Minneasota. 
  10. ^ Arbizu and Tapia (1994). "Plant Production and Protection Series No. 26. FAO, Rome, Italy". FAO / Purdue University. 
  11. ^ http://www.thecanadianencyclopedia.com/en/article/pemmican/
  12. ^ Allianz. "Food security: Ten Crops that Feed the World". Allianz. 
  13. ^ "FAOSTAT: Production-Crops, 2010 data". Food and Agriculture Organization of the United Nations. 2011. 
  14. ^ The numbers in this column are country average; regional farm productivity within the country varies, with some farms even higher.
  15. ^ United Nations Food and Agriculture Organization: Agriculture and Consumer Protection. "Rice and Human Nutrition". Retrieved 2010-10-15. 
  16. ^ "Nutrient data laboratory". United States Department of Agriculture. Retrieved January 2012. 
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