n. a member of a class of yellow carotenoid pigments found in green leaves. Examples of xanthophylls are *lutein, zeaxanthin, and *mesozeaxanthin.
Nutritional Profile Energy value (calories per serving): Moderate Protein: Moderate Fat: Low Saturated fat: Low Cholesterol: None Carbohydrates: High Fiber: High Sodium: Low Major vitamin contribution: Vitamin A (in yellow corn), B vitamins, vitamin C Major mineral contribution: Potassium
About the Nutrients in This Food Like other grains, corn is a high-carbohydrate, high-fiber food. Eighty-one percent of the solid material in the corn kernel consists of sugars, starch, and dietary fiber, including insoluble cellulose and noncarbohydrate lignin in the seed covering and soluble pectins and gums in the kernel.* Corn has small amounts of vitamin A, the B vitamin folate, and vitamin C. Corn is a moderately good source of plant proteins, but zein (its major protein) is deficient in the essential amino acids lysine, cystine, and tryptophan. Corn is low in fat and its oils are composed primarily of unsaturated fatty acids. Yellow corn, which gets its color from the xanthophyll pigments lutein and zeaxanthin plus the vitamin A-active pigments carotene and cryptoxanthin, contains a little vitamin A; white corn has very little. One fresh ear of yellow corn, 5.5– 6.5 inches long, has three grams dietar y fiber, one gram fat (0.1 g saturated fat, 0.3 g monounsaturated fat, 0.4 mg polyunsaturated fat), 137 IU vitamin A (6 percent of the R DA for a woman, 5 percent of the R DA for a man), 34 mcg folate (9 percent of the R DA), and 5 mg vitamin C (7 percent of the R DA for a woman, 6 percent of the R DA for a man). * The most plent iful sugar in sweet corn is glucose; hydrolysis (chemical splitt ing) of corn starch is t he principal indust rial source of glucose. Since glucose is less sweet t han sucrose, sucrose and fructose are added to commercial corn syrup to make it sweeter.
The Most Nutritious Way to Serve This Food With beans (which are rich in lysine) or milk (which is rich in lysine and tryptophan), to complement the proteins in corn. With meat or a food rich in vitamin C, to make the iron in corn more useful.
Diets That May Restrict or Exclude This Food Low-fiber diet
Buying This Food Look for: Cobs that feel cool or are stored in a refrigerated bin. Keeping corn cool helps retain its vitamin C and slows the natural conversion of the corn’s sugars to starch. Choose fresh corn with medium-sized kernels that yield slightly when you press them with your fingertip. Very small kernels are immature; very large ones are older and will taste starchy rather than sweet. Both yellow and white kernels may be equally tasty, but the husk of the corn should always be moist and green. A dry yellowish husk means that the corn is old enough for the chlorophyll pigments in the husk to have faded, letting the carotenes underneath show through.
Storing This Food Refrigerate fresh corn. At room temperature, fresh-picked sweet corn will convert nearly half its sugar to starch within 24 hours and lose half its vitamin C in four days. In the refrigera- tor, it may keep all its vitamin C for up to a week and may retain its sweet taste for as long as ten days.
Preparing This Food Strip off the husks and silk, and brush with a vegetable brush to get rid of clinging silky threads. R inse the corn briefly under running water, and plunge into boiling water for four to six minutes, depending on the size of the corn.
What Happens When You Cook This Food Heat denatures (breaks apart) the long-chain protein molecules in the liquid inside the corn kernel, allowing them to form a network of protein molecules that will squeeze out moisture and turn rubbery if you cook the corn too long. Heat also allows the starch granules inside the kernel to absorb water so that they swell and eventually rupture, releasing the nutrients inside. When you cook corn, the trick is to cook it just long enough to rupture its starch granules while keeping its protein molecules from turning tough and chewy. Cooking fresh corn for several minutes in boiling water may destroy at least half of its vitamin C. At Cornell University, food scientists found that cooking fresh corn in the microwave oven (two ears/without water if very fresh/4 minutes/600 –700 watts) preserves most of the vitamin C.
How Other Kinds of Processing Affect This Food Canning and freezing. Canned corn and frozen corn both have less vitamin C than fresh- cooked corn. The vitamin is lost when the corn is heated during canning or blanched before freezing to destroy the natural enzymes that would otherwise continue to ripen it. Blanch- ing in a microwave oven rather than in boiling water can preserve the vitamin C in frozen corn (see above). Milling. Milling removes the hull and germ from the corn kernel, leaving what is called hominy. Hominy, which is sometimes soaked in wood ash (lye) to increase its calcium con- tent, can be dried and used as a cereal (grits) or ground into corn flour. Coarsely ground corn flour is called cornmeal. Processed corn cereals. All processed, ready-to-eat corn cereals are much higher in sodium and sugar than fresh corn. Added calcium carbonate. Pellagra is a niacin-deficiency disease that occurs most com- monly among people for whom corn is the staple food in a diet lacking protein foods with the essential amino acid tryptophan, which can be converted to niacin in the human body. Pellagra is not an inevitable result of a diet high in corn, however, since the niacin in corn can be made more useful by soaking the corn in a solution of calcium carbonate (lime) and water. In Mexico, for example, the corn used to make tortillas is boiled in a dilute solution of calcium carbonate (from shells or limestone) and water, then washed, drained, and ground. The alkaline bath appears to release the bound niacin in corn so that it can be absorbed by the body.
Medical Uses and/or Benefits As a wheat substitute in baking. People who are allergic to wheat or cannot tolerate the glu- ten in wheat flour or wheat cereals can often use corn flour or hominy instead. Bath powder. Corn starch, a fine powder refined from the endosperm (inner part) of the corn kernel, can be used as an inexpensive, unperfumed body or face powder. Because it absorbs oils, it is also used as an ingredient in dry shampoos.
Adverse Effects Associated with This Food Allergic reaction. According to the Merck Manual, corn is one of the 12 foods most likely to trigger the classic food allergy symptoms: hives, swelling of the lips and eyes, and upset stomach. The others are berries (blackberries, blueberries, raspberries, strawberries), choco- late, eggs, fish, legumes (green peas, lima beans, peanuts, soybeans), milk, nuts, peaches, pork, shellfish, and wheat (see wheat cer ea ls).... corn
Nutritional Profile Energy value (calories per serving): High Protein: Moderate Fat: Low Saturated fat: Low Cholesterol: None Carbohydrates: High Fiber: Low to high Sodium: Low (except self-rising flour) Major vitamin contribution: B vitamins Major mineral contribution: Iron
About the Nutrients in This Food Flour is the primary source of the carbohydrates (starch and fiber) in bread, pasta, and baked goods. All wheat and rye flours also provide some of the food fibers, including pectins, gums, and cellulose. Flour also contains significant amounts of protein but, like other plant foods, its proteins are “incomplete” because they are deficient in the essential amino acid lysine. The fat in the wheat germ is primarily polyunsaturated; flour contains no cholesterol. Flour is a good source of iron and the B vitamins. Iodine and iodophors used to clean the equipment in grain-processing plants may add iodine to the flour. In 1998, the Food and Drug Administration ordered food manufac- turers to add folates—which protect against birth defects of the spinal cord and against heart disease—to flour, rice, and other grain products. One year later, data from the Framingham Heart Study, which has fol- lowed heart health among residents of a Boston suburb for nearly half a century, showed a dramatic increase in blood levels of folic acid. Before the fortification of foods, 22 percent of the study participants had a folic acid deficiency; after, the number fell to 2 percent. Whole grain flour, like other grain products, contains phytic acid, an antinutrient that binds calcium, iron, and zinc ions into insoluble com- pounds your body cannot absorb. This has no practical effect so long as your diet includes foods that provide these minerals. Whole wheat flours. Whole wheat flours use every part of the kernel: the fiber-rich bran with its B vitamins, the starch- and protein-rich endosperm with its iron and B vitamins, and the oily germ with its vitamin E.* Because they contain bran, whole-grain flours have much more fiber than refined white flours. However, some studies suggest that the size of the fiber particles may have some bearing on their ability to absorb moisture and “bulk up” stool and that the fiber particles found in fine-ground whole wheat flours may be too small to have a bulking effect. Finely ground whole wheat flour is called whole wheat cake flour; coarsely ground whole wheat flour is called graham flour. Cracked wheat is a whole wheat flour that has been cut rather than ground; it has all the nutrients of whole wheat flour, but its processing makes it less likely to yield its starch in cooking. When dried and parboiled, cracked wheat is known as bulgur, a grain used primarily as a cereal, although it can be mixed with other flours and baked. Gluten flour is a low-starch, high-protein product made by drying and grinding hard- wheat flour from which the starch has been removed. Refined (“white”) flours. Refined flours are paler than whole wheat flours because they do not contain the brown bran and germ. They have less fiber and fat and smaller amounts of vitamins and minerals than whole wheat flours, but enriched refined flours are fortified with B vitamins and iron. Refined flour has no phytic acid. Some refined flours are bleached with chlorine dioxide to destroy the xanthophylls (carotenoid pigments) that give white flours a natural cream color. Unlike carotene, the carotenoid pigment that is converted to vitamin A in the body, xanthophylls have no vita- min A activity; bleaching does not lower the vitamin A levels in the flour, but it does destroy vitamin E. There are several kinds of white flours. All-purpose white flour is a mixture of hard and soft wheats, high in protein and rich in gluten.t Cake flour is a finely milled soft-wheat flour; it has less protein than all-purpose flour. Self-rising flour is flour to which baking powder has been added and is very high in sodium. Instant flour is all-purpose flour that has been ground extra-fine so that it will combine quickly with water. Semolina is a pale high-protein, low- gluten flour made from durum wheat and used to make pasta. Rye flours. Rye flour has less gluten than wheat flour and is less elastic, which is why it makes a denser bread.:j Like whole wheat flour, dark rye flour (the flour used for pumpernickel bread) contains the bran and the germ of the rye grain; light rye flour (the flour used for ordinary rye bread) The bran is t he kernel’s hard, brown outer cover, an ext raordinarily rich source of cellulose and lignin. The endosperm is t he kernel’s pale interior, where t he vitamins abound. The germ, a small part icle in t he interior, is t he part of t he kernel t hat sprouts. Hard wheat has less starch and more protein t han soft wheat. It makes a heavier, denser dough. Gluten is t he st icky substance formed when k neading t he dough relaxes t he long-chain molecules in t he proteins gliadin and glutenin so t hat some of t heir intermolecular bonds (bonds bet ween atoms in t he same molecule) break and new int ramolecular bonds (bonds bet ween atoms on different mol- ecules) are formed. Triticale flour is milled from triticale grain, a rye/wheat hybrid. It has more protein and less gluten than all-purpose wheat flour.
The Most Nutritious Way to Serve This Food With beans or a “complete” protein food (meat, fish, poultry, eggs, milk, cheese) to provide the essential amino acid lysine, in which wheat and rye flours are deficient.
Diets That May Restrict or Exclude This Food Low-calcium diet (whole grain and self-rising flours) Low-fiber diet (whole wheat flours) Low-gluten diet (all wheat and rye flour) Sucrose-free diet
Buying This Food Look for: Tightly sealed bags or boxes. Flours in torn packages or in open bins are exposed to air and to insect contamination. Avoid: Stained packages—the liquid that stained the package may have seeped through into the flour.
Storing This Food Store all flours in air- and moistureproof canisters. Whole wheat flours, which contain the germ and bran of the wheat and are higher in fat than white flours, may become rancid if exposed to air; they should be used within a week after you open the package. If you plan to hold the flour for longer than that, store it in the freezer, tightly wrapped to protect it against air and moisture. You do not have to thaw the flour when you are ready to use it; just measure it out and add it directly to the other ingredients. Put a bay leaf in the flour canister to help protect against insect infections. Bay leaves are natural insect repellents.
What Happens When You Cook This Food Protein reactions. The wheat kernel contains several proteins, including gliadin and glute- nin. When you mix flour with water, gliadin and glutenin clump together in a sticky mass. Kneading the dough relaxes the long gliadin and glutenin molecules, breaking internal bonds between individual atoms in each gliadin and glutenin molecule and allowing the molecules to unfold and form new bonds between atoms in different molecules. The result is a network structure made of a new gliadin-glutenin compound called gluten. Gluten is very elastic. The gluten network can stretch to accommodate the gas (carbon dioxide) formed when you add yeast to bread dough or heat a cake batter made with baking powder or baking soda (sodium bicarbonate), trapping the gas and making the bread dough or cake batter rise. When you bake the dough or batter, the gluten network hardens and the bread or cake assumes its finished shape. Starch reactions. Starch consists of molecules of the complex carbohydrates amylose and amylopectin packed into a starch granule. When you heat flour in liquid, the starch gran- ules absorb water molecules, swell, and soften. When the temperature of the liquid reaches approximately 140°F the amylose and amylopectin molecules inside the granules relax and unfold, breaking some of their internal bonds (bonds between atoms on the same molecule) and forming new bonds between atoms on different molecules. The result is a network that traps and holds water molecules. The starch granules then swell, thickening the liquid. If you continue to heat the liquid (or stir it too vigorously), the network will begin to break down, the liquid will leak out of the starch granules, and the sauce will separate.* Combination reaction. Coating food with flour takes advantage of the starch reaction (absorbing liquids) and the protein reaction (baking a hard, crisp protein crust).
Medical Uses and/or Benefits A lower risk of some kinds of cancer. In 1998, scientists at Wayne State University in Detroit conducted a meta-analysis of data from more than 30 well-designed animal studies mea- suring the anti-cancer effects of wheat bran, the part of grain with highest amount of the insoluble dietary fibers cellulose and lignin. They found a 32 percent reduction in the risk of colon cancer among animals fed wheat bran; now they plan to conduct a similar meta- analysis of human studies. Whole wheat flours are a good source of wheat bran. NOTE : The amount of fiber per serving listed on a food package label shows the total amount of fiber (insoluble and soluble). Early in 1999, however, new data from the long-running Nurses Health Study at Brigham Women’s Hospital/Harvard University School of Public Health showed that women who ate a high-fiber diet had a risk of colon cancer similar to that of women who ate a low-fiber diet. * A mylose is a long, unbranched, spiral molecule; amylopect in is a short, compact, branched molecule. A mylose has more room for forming bonds to water. Wheat flours, which have a higher rat io of amy- lose to amylopect in, are superior t hickeners. Because this study contradicts literally hundreds of others conducted over the past 30 years, researchers are awaiting confirming evidence before changing dietary recommendations.
Adverse Effects Associated with This Food Allergic reactions. According to the Merck Manual, wheat is one of the foods most commonly implicated as a cause of allergic upset stomach, hives, and angioedema (swollen lips and eyes). For more information, see under wheat cer ea ls. Gluten intolerance (celiac disease). Celiac disease is an intestinal allergic disorder that makes it impossible to digest gluten and gliadin (proteins found in wheat and some other grains). Corn flour, potato flour, rice flour, and soy flour are all gluten- and gliadin-free. Ergot poisoning. Rye and some kinds of wheat will support ergot, a parasitic fungus related to lysergic acid (LSD). Because commercial flours are routinely checked for ergot contamina- tion, there has not been a major outbreak of ergot poisoning from bread since a 1951 incident in France. Since baking does not destroy ergot toxins, the safest course is to avoid moldy flour altogether.... flour
Habitat: Cultivated chiefly in Aligarh, Ghazipur and Kannauj, grown in gardens throughout India.
English: Damask Rose.Ayurvedic: Taruni. (Flowers—red, pink or white.)Unani: Gul-e-Surkh, Vard, Vard- e-Ahmar. Stamens—Zard-e-Vard. Fruit—Dalik, Samar-ul-Vard, Smar-e-Gul.Siddha/Tamil: Irosa.Folk: Fasali Gulaab.Action: Flower buds—astringent, expectorant, laxative; used as a cardiac tonic and aperient. Stamens and fruits—astringent. Petals—Gulkand (a confection in sugar)—laxative, anti-inflammatory (used in sore throat and tonsilitis. Rose water—cooling, refrigerant, antiseptic, anti-inflammatory (used as a remedy for skin irritation, also for sore eyes).
All parts of the rose plant yielded quercetin, kaempferol and cyanidin. Lycopene, rubixanthin, zeaxanthin, xanthophyll and taraxanthin have been isolated from the hips. The flowers contain an essential oil with citronel- lol, nerol, geraniol, beta-phenylethanol and its glucoside, eugenol and methyl eugenol; other constituents include organic acids, chlorogenic acid, tannin, cyanin, cyanidin and its 3,5-di- glucoside, quercitrin, carotene and sugars. Pollen from flowers contain carotene (0.76 mg/100 g), sugars (1.0%) and chlorogenic acid (1.5%). Their proline content is found unusually high.The red colouring matter consists of cyanin (9-10% on dry weight basis); a yellow glucoside of quercetin and quercitrin is also present. Flowers, usually, yield 0.04% oil or otto of rose.Dog Rose, extensively cultivated in Europe, North Africa and parts of Asia, is equated with Rosa canina Lin. The rose hip contains vitamin C (0.22.0%), malic and citric acid, pectins (15%), invert sugar (12-15%), tannins (2%), carotenoids, flavonoids.Preparations of Rose hips are used for the prevention and treatment of colds and influenza-type infections, for the treatment vitamin C deficiencies; and for increasing resistance.... rosa damascenaHabitat: Native to China; planted all over India in gardens.
English: Oriental Arbor-Vitae.Folk: Morepankhi.Action: Leaves—diuretic, insectici- dal antipyretic.
The leaves contain rhodoxanthin, amentoflavone, hinokiflavone, querce- tin, myricetin, carotene (20.8 mg/100 g dry basis), xanthophyll and ascorbic acid (68 mg/100 g). Essential oil, obtained from twigs (0.32) and berries (0.25%), contains alpha-thujene, (+)- sabinene, (+)-camphene, cedrol, ce- drenol and alpha-and beta-pinenes as major constituents.American Arbor-Vitae and White Cedar has been equated with T. occidentals and is used as Thuja.It was introduced into India from North America, and grows as a Christmas tree in the plains of India.Leaves—aninfusionisusedasa uterine stimulant, emmenagogue and diuretic. Boiled in lard, are applied externally for rheumatism. Bark—astringent, emmenagogue, diuretic. Oil— poisonous, disinfectant, insecticidal. Seed and fruit— antibacterial; inhibited the growth of Gram-positive microorganisms.The leaves yields a volatile oil, containing thujone as major component, with iso-thujone, borneol, bornyl acetate, l-fenchone, limonene, sabinene, camphor, l-alpha-thujene; flavonoids, mucilage, tannins.The heartwood yields a non-toxic antibiotic substance. It gave sesquiter- pene alcohols—occidentalol and oc- cidol; also alpha-beta-and gamma- eudesmol.Thuja is used in homoeopathy for tissue degeneration and tumours, warts and fungoid growths, both internally and externally.... thuja orientalis
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