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BRAZIL NUT
Family: Lecythidaceae
Genus: Bertholletia
Species: excelsa
Ethnic names: Brazilnut, Castanheiro do Para, Para-nut, Creamnut, Castana-de-Para, Castana-de-Brazil
Parts Used: Nut, Seed Oil
DESCRIPTION
Properties/Actions:
Emollient, Nutritive, Antioxidant, Insecticide
Phytochemicals:
Alpha-linolenic-acid, Antimony, Cerium, Cesium, Europium , Lanthanum, Lutetium , Samarium, Scandium, Selenoprotein, Tantalum, Tungsten , Ytterbium
 
ETHNOBOTANY: WORLDWIDE USES
Amazonia
Repellant(Insect), Emollient, Soap, Liver
Venezuela
Repellant(Insect)
Castanheiro do Para, the Brazilian name given to its tree, is found in many Amazonian States of Brazil, Peru, Columbia, Venezuela and Ecuador. It is most prevalent in the Brazilian states of Maranhao, Mato Grosso, Acre, Para, Rondonia, and Amazonas. The tree is enormous, frequently attaining the height of 160 feet or more. The fruit is a large spherical woody capsule or pod and measures an average of six inches in diameter and can weigh up to 5 pounds. The fruit pods grows at the ends of thick branches, then ripens and falls from the tree from January to June. Inside each fruit pod is 12 to 25 Brazil nuts with their own individual shell.

Brazil nut trees can produce approximately three hundred or more of these fruit pods. The monetary value of Brazil nut exportation today from Amazonian Brazil, which began in the 1600's by Dutch traders, is second only to that of rubber. Although thousands of tons of Brazil nuts are exported each year from Brazil, virtually all Brazil nut production comes from wild forest trees and wild harvesting. The trees grow very slowly and very little are actually cultivated. The United States alone imports over 10 tons annually.

Brazil Nuts are a three sided nut with white meat or flesh that consists of 70 percent fat or oil and 17 percent protein. The oil is extracted from the nuts and is commonly used in Peru and other South American countries to manufacture soap. In the Brazilian Amazon, the tree bark is brewed into tea to treat liver ailments and diseases. For centuries, the Indigeous Tribes of the rainforest have relied on Brazil Nuts as an important and significant staple of their diet. So important, that it has even been used as a trade commodity, much like money. Indigenous Tribes eat the nuts raw, or they are grated and mixed into gruels. In the Brazilian Amazon, the nuts are grated with the thorny stilt roots of Socratea palms into a white mush known as leite de castanha, and then stirred into manioc flour. It is a valuable source of calories, fat and protein for much of the Amazon's rural and urban peoples.

With such a high oil content, Brazil Nuts will even burn like miniature candles when lit. The oil is extracted from the nuts and used by Indigenous and rural people for cooking oil, lamps, soap, and livestock feed. The empty seed pods, often called "monkey's pots," are used to carry around small smokey fires to discourage attacks of black flies, and are also used as collection cups to collect rubber latex from tapped trees and as drinking cups. The husks of these seed pods have also been used in Brazilian folk medicine to brew into tea to treat stomachaches.

Brazil Nut Oil is a clear yellowish oil which has a pleasant and sweet smell and taste. In addition to protein and fat, Brazil Nuts are a substantial source of selenium, an important antioxidant. One single Brazil nut exceeds the US Recommended Daily Allowance of selenium. The proteins found in Brazil nuts are very high in sulphur-containing amino acids like cysteine (8%) and methionine (18%) and are also extremely rich in glutamine, glutamic acid, and arginine.

Brazil Nut Oil contains mainly palmitic, oleic and linoleic and alpha linolenic acids and small amounts of myristic and stearic acids and phytosterols. Today, Brazil Nut Oil is offen used in soaps, shampoos and hair conditioning/repair products. It is a wonderful hair conditioner; bringing shine, silkiness, malleability and softness to hair. It helps renew dry, lifeless hair and split-ends and allows hair to remain soft and silky. It provides stabilizing detergent properties and helps clean the hair. It can also be found in skin care products as it acts as a wonderful skin moisturizer. Brazil Nut oil in skin creams helps keep skin soft and smooth. It helps lubricate and moisturize the skin, provides antioxidant benefits, helps prevents dryness and leaves skin soft, smooth and hydrated.

References/Footnotes
  • Schultes, R.E., "Gifts of the Amazon Flora to the World". Arnoldia 50(2): 21-34 (1990).
  • Vasquez, M. R., 1990 Useful Plants of Amazonian Peru. Second Draft. Filed with USDA's National Agricultural Library.
  • Schultes, R., Raffauf, R., 1990, The Healing Forest, Dioscorides Press.
  • Smith, Nigel, Williams, J., Plucknett, Donald and Talbot, Jennifer. 1992. Tropical Forests and their Crops. Comstock Publishing, NY
  • Branch, L.C., and da Silva, I.M. 1983. Folk Medicine of Alter do Chao, Para, Brazil. Acta Amazonica 13 (5/6): 737-797. Manaus, Brazil.
  • Duke, J.A., 1986a. Handbook of Northeastern Indian Medicinal Plants. Quarterman Publications, MA.
  • Ampe, C., et al, "The amino-acid sequence of the 2S sulfur-rick proteins from seeds of Brazil nut (Bertholletia excelsa H.B.K.)." Eur. J. Biochem. 159: 597-604 (1986).
  • Sun, S.S., et al., "Properties, biosynthesis and processing of a sulfur-rich protein in Brazil nut (Bertholletia excelsa H.B.K.)." Eur. J. Biochem. 162: 477-483 (1987).
The above text has been quoted from the book, Herbal Secrets of the Rainforest. By Leslie Taylor
Clinical References on Brazil Nut
  1. Chang JC, et al. Selenium content of Brazil nuts from two geographic locations in Brazil. Chemosphere, 1995 Feb
  2. Nicaud JM, et al. Stabilization of methionine-rich protein in Saccharomyces cerevisiae: targeting of BZN protein into the peroxisome. Curr Genet, 1994 Nov-Dec
  3. Ip C, et al. Bioactivity of selenium from Brazil nut for cancer prevention and selenoenzyme maintenance. Nutr Cancer, 1994
  4. Saalbach I, et al. A chimeric gene encoding the methionine-rich 2S albumin of the Brazil nut (Bertholletia excelsa H.B.K.) is stably expressed and inherited in transgenic grain legumes. Mol Gen Genet, 1994 Jan
  5. Gander ES, et al. Isolation, characterization and expression of a gene coding for a 2S albumin from Bertholletia excelsa (Brazil nut). Plant Mol Biol, 1991 Mar
  6. Guerche P, et al. Expression of the 2S albumin from Bertholletia excelsa in Brassica napus. Mol Gen Genet, 1990 May
  7. Ampe C, et al. The amino-acid sequence of the 2S sulphur-rich proteins from seeds of Brazil nut (Bertholletia excelsa H.B.K.). Eur J Biochem, 1986 Sep 15
  8. Sun SS, et al. Properties, biosynthesis and processing of a sulfur-rich protein in Brazil nut (Bertholletia excelsa H.B.K.). Eur J Biochem, 1987 Feb 2
  9. Thorn J, et al. Trace nutrients. Selenium in British food. Br J Nutr, 1978 Mar
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