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Quinoa Nutrition facts

Quinoa (pronounced as kinwah; quinua in Spanish) is an incredibly nutritious "grain-like seed" obtained from the goosefoot family plant native to the highland plains of the South-American Andes region.

Ancient Incas believed quinoa as “the mother grain,” since eating it as food would confer them a long-lasting healthy life. The crop was once the staple food source of the Incas before the Spanish explorers forced them to abandon its cultivation.

Quinua is a goosefoot (Chenopodiaceae) family of annual herbs. White goosefoot (C. album), and Good King Henry (C. bonus-henricus) are some of the closely related species. Scientific name: Chenopodium quinoa.

Peruvia quinoa
Quinoa seeds. Note for oval, creamy-white seeds.

Quinoa is not a cereal-class of staple grains. Instead, it is a seed in a way much like other dicotyledons such as amaranth, and legumes. Nonetheless, its seeds feature proportionately less fat content than oilseeds and hence are treated in a way like any other staple grains.

chenopodium quinoa achene
Chenopodium quinoa.
Photo courtesy: mishmoshimoshi

The quinoa plant reaches about 3-6 feet in height and prefers well-drained, neutral PH and sandy soil. It, however, can thrive well in harsh environmental conditions and alkaline (salty) soils. For the same reason, it is being cultivated as one of the chief crops under the rain-shadow highlands of Bolivia, Peru, Chile, and Ecuador since ancient times.

At its natural habitat, quinoa begins flowering (inflorescence) in July, which subsequently develop into edible seeds by the end of August through September.

Quinoa measure about two mm in diameter, white, gray, pink to pale brown depending upon the cultivar type. The seeds exhibit an outer seed coat composing bitter substances known as saponins that should be removed before eating.

Quinoa indeed has found renewed interest, particularly among food scientists, because of its sustainable characteristic of thriving well under stressful growing conditions. Additionally, its well-balanced protein, fat, and mineral composition can be an answer to malnutrition alleviation in famine-prone regions around the world.

Health benefits of Quinoa

  1. 100 g quinoa seeds (grains) carry 368 calories. Its grains are modest sources of energy, and their calorie content may be matched to that of some of the major cereals such as wheat, maize, rice, and that of pulses like chickpea, mung bean, cowpea (black-eyed pea), etc.

  2. Quinoa grains carry 14-18 g of protein per 100 g. They compose almost all of the essential amino acids required for the human body at great proportions, especially in lysine which is otherwise a limiting amino acid in grains like wheat, maize, rice, etc.

  3. Quinoa is one of the gluten-free staple foods. Gluten is a protein present in certain grass family grains like wheat, which may induce stomach upset and diarrhea in individuals with gluten sensitivity or celiac disease.

  4. The grains are a rich source of soluble and insoluble dietary fiber. 100 g provides 7 g or 18.5% of the daily requirement of fiber. Dietary fiber increases the bulkiness of the food and thus, helps prevent constipation by speeding up its movement through the gut. In fact, the gastrointestinal transit time of food is greatly decreased. It also binds to toxins and aid in their excretion from the gut, and thereby, helps protect the colon mucosa from cancers.

  5. Also, dietary fibers bind to bile salts (produced from cholesterol) and decrease their reabsorption in the colon, thus help lower serum LDL-cholesterol levels.

  6. Quinoa grains are indeed excellent sources of the B-complex group of vitamins, vitamin-E (α-tocopherol) and essential fatty acids such as linoleic and α-linolenic acid (18:3). 100 g of grains contain 184 μg or 46% of daily required levels of folates (B9).

  7. Young, tender quinoa greens (leaves and shoots) and flowerheads are excellent sources of vitamin-A, folate and antioxidants such as lutein, carotene, cryptoxanthin and zeaxanthin. Yellow and red type seeds also rich in these pigment antioxidants. Altogether, these compounds indeed function as powerful antioxidants by removing harmful free radicals from the body, thus protect it from cancers, infection, aging, and degenerative neurological diseases.

  8. Quinoa is an excellent source of minerals like iron, copper, calcium, potassium, manganese, and magnesium. Copper is required for the production of red blood cells. Iron is essential for red blood cell formation. Magnesium relaxes blood vessels leading to the brain and found to have healing effects on depression, and headache. Zinc is a co-factor in many enzymes that regulate growth and development, sperm generation, digestion, and nucleic acid synthesis. Potassium is an important component of cell and body fluids that helps controlling heart rate and blood pressure. The human body uses manganese as a cofactor for the potent antioxidant enzyme, superoxide dismutase.

Quinoa is not a cereal grain but a dicotyledon seed (minute fruit) of the goosefoot plant. Nonetheless, it was treated like grain and consumed as one of the staple sources along with potato and maize since ancient times by native Andean inhabitants.

It features all the characteristics of seed and composes the right proportions of all the essential amino acids, fats, starch, fiber, minerals, and vitamins.

Quinoa oil, extracted from its seeds, is an excellent source of essential fatty acids and vitamin-E.

See the table below for in depth analysis of nutrients:

Quinoa nutrition chart, values per 100 g.
(Source: USDA National Nutrient data base)

Principle Nutrient Value Percentage of RDA
Energy 368 Kcal 18.5%
Carbohydrates 64.16 g 49%
Protein 14.12 g 35%
Total Fat 6.07 g 20%
Cholesterol 0 mg 0%
Dietary Fiber 7 g 18.5%
Vitamins
Folates (B9) 184 μg 46%
Niacin (B3) 1.520 mg 9.5%
Riboflavin (B2) 0.318 mg 24%
Thiamin (B1) 0.360 mg 30%
Vitamin A 14 IU 0.5%
Vitamin E 2.44 mg 17%
Vitamin K 0 0%
Electrolytes
Sodium 5 mg <1%
Potassium 563 mg 12%
Minerals
Calcium 47 mg 5%
Copper 0.590 mg 65.5%
Iron 4.57 mg 57%
Magnesium 197 mg 42%
Manganese 2.003 mg 87%
Phosphorus 457 mg 65%
Selenium 8.5 μg 15%
Zinc 3.10 mg 28%
Phyto-nutrients
Carotene-β 8 μg --
Crypto-xanthin-β 1 μg --
Lutein-zeaxanthin 163 μg --

Selection and storage

Dry quinoa seeds, raw and processed can be readily available all around the season in the US stores. Being an unnaturalized crop in the USA, quinoa has to be imported from Bolivia, Peru, and other South American countries. Processed seeds are generally sold in airtight packets and bulk bins.

Look for fine, dry grains roughly the size of pearl millet. They come in different colors, ranging from creamy-white, pink, yellow to deep brown, depending on cultivar variety.

At home, store the grains in an airtight container in a cool, dry place where they stay fresh for several months. Ground quinoa flour, however, exposes its essential fatty acids to environmental factors which may initiate rapid lipid peroxidation and reduce its lifespan. Therefore, mill it as and when required and store its flour in an air-seal container.


Preparation and serving methods

quinoa soup-sopa de quinua
Sopa de quinua- quinua soup.
Photo courtesy: Robert Luna

The unprocessed quinoa grain has a thick outer coat (hull) that must be removed before fitting for consumption. This outer coating contains an anti-nutrient compound, Saponin that has a bitter, soapy taste. Virtually, all the available grains of quinoa in the US stores are de-hulled and pre-washed.

At home, wash in cold water repeatedly until all of its foam disappears before cooking. Quinoa cooked in the same way as you cook other staples like buckwheat, rice, etc. Roughly, one cup of dry grains cooks to three cups. Cooked quinoa becomes fluffy, chewy and attains pearl like translucency and pleasant taste.

Here are some serving tips:

  • Mixing quinoa floor with other cereal flours such as maize, wheat, oat, etc., enriches overall protein quality of the meal, compensating for the limiting amino-acid level of grains.

  • Traditionally, native Andeans used quinoa seeds to prepare porridge, soup and milled into flour to make bread, porridge (lawa), buns, polenta, and non-alcoholic cold drinks (quinua chicha).

  • In the rest of the world, its grains used in many ways like any other cereal grains to make pilaf, porridge, flakes, puddings, etc.

  • Its flour may be used in numerous methods to make bread, bun, cake, pasta, noodles, cookie, biscuits, etc.

  • Young, tender quinoa leaves (chiwa) and flower heads are also eaten like leafy vegetables and indeed, make good salads, stews, and soups mixed with amaranth, spinach, and beet leaves.

  • Cold-pressed quinoa oil has been one of the sought after oil used as dressing as well as cooking oil in place of rice bran or corn oils.


Safety profile

Unpolished (unwashed) quinoa seed carries in its outer cover saponin, a triterpenoid compound. Saponin has a bitter soap-like taste, which, when consumed, might result in stomach pain, flatulence, and laxative diarrhea. Naturally, this covering over the grains protects them from insects and birds.

Quinoa leaves and flower-heads compose oxalic acid and should be blanched in boiling water before being eaten. (Medical disclaimer).



<<-Back to Nuts and seeds from Quinoa. Visit here for an impressive list of nuts and seeds with complete illustrations of their nutrition facts and health benefits.

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Further Resources:

  1. FAO.

  2. USDA.




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