Archive for May, 2010

Canola is one of two cultivars of rapeseed or Brassica campestris (Brassica napus L. and B. campestris L.). Their seeds are used to produce edible oil that is fit for human consumption because it has lower levels of erucic acid than traditional rapeseed oils and to produce livestock feed because it has reduced levels of the toxic glucosinolates. Canola was originally naturally bred from rapeseed in Canada by Keith Downey and Baldur R. Stefansson in the early 1970s, but it has a very different nutritional profile in addition to much less erucic acid. The name “canola” was derived from “Canadian oil, low acid” in 1978. A product known as LEAR (for low erucic acid rapeseed) derived from cross-breeding of multiple lines of Brassica juncea is also referred to as canola oil and is considered safe for consumption.

History
Once considered a specialty crop in Canada, canola has become a major North American cash crop. Canada and the United States produce between 7 and 10 million tonnes of canola seed per year. Annual Canadian exports total 3 to 4 million tonnes of the seed, 700,000 tonnes of canola oil and 1 million tonnes of canola meal. The United States is a net consumer of canola oil. The major customers of canola seed are Japan, Mexico, China and Pakistan, while the bulk of canola oil and meal goes to the United States, with smaller amounts shipped to Mexico, China, and Europe. World production of rapeseed oil in the 2002–2003 season was about 14 million metric tons.

Canola was developed through conventional plant breeding from rapeseed, an oilseed plant already used in ancient civilization. The word “rape” in rapeseed comes from the Latin word “rapum,” meaning turnip. Turnip, rutabaga, cabbage, Brussels sprouts, mustard and many other vegetables are related to the two canola varieties commonly grown, which are cultivars of Brassica napus and Brassica rapa. The negative associations due to the homophone “rape” resulted in creation of the more marketing-friendly name “Canola”. The change in name also serves to distinguish it from regular rapeseed oil, which has much higher erucic acid content.

Hundreds of years ago, Asians and Europeans used rapeseed oil in lamps. As time progressed, people employed it as a cooking oil and added it to foods. Its use was limited until the development of steam power, when machinists found rapeseed oil clung to water- or steam-washed metal surfaces better than other lubricants. World War II saw high demand for the oil as a lubricant for the rapidly increasing number of steam engines in naval and merchant ships. When the war blocked European and Asian sources of rapeseed oil, a critical shortage developed and Canada began to expand its limited rapeseed production.

After the war, demand declined sharply and farmers began to look for other uses for the plant and its products. Edible rapeseed oil extracts were first put on the market in 1956–1957, but these suffered from several unacceptable characteristics. Rapeseed oil had a distinctive taste and a disagreeable greenish colour due to the presence of chlorophyll. It also contained a high concentration of erucic acid. Experiments on animals have pointed to the possibility that erucic acid, consumed in large quantities, may cause heart damage, though Indian researchers have published findings that call into question these conclusions and the implication that the consumption of mustard or rapeseed oil is dangerous. Feed meal from the rapeseed plant was not particularly appealing to livestock, due to high levels of sharp-tasting compounds called glucosinolates.

Plant breeders in Canada, where rapeseed had been grown (mainly in Saskatchewan) since 1936, worked to improve the quality of the plant. In 1968 Dr. Baldur Stefansson of the University of Manitoba used selective breeding to develop a variety of rapeseed low in erucic acid. In 1974 another variety was produced low in both erucic acid and glucosinolates; it was named Canola, from Canadian oil, low acid.

A variety developed in 1998 is considered to be the most disease- and drought-resistant variety of Canola to date. This and other recent varieties have been produced by using genetic engineering.

An Oregon State University researcher has determined that growing winter canola for hybrid seed appears possible in central Oregon, USA. Canola is the highest-producing oil-seed crop, but the state prohibits it from being grown in Deschutes, Jefferson and Crook counties because it may attract bees away from specialty seed crops such as carrots, which require bees for pollination.

Canola was originally a trademark but is now a generic term for this variety of oil. In Canada, an official definition of canola is codified in Canadian law.

Source: http://en.wikipedia.org/wiki/Canola

See Also: next day flowers delivery, florist bouquet, online flower, gifts Australia

Mustards are several plant species in the genera Brassica and Sinapis whose small mustard seeds are used as a spice and, by grinding and mixing them with water, vinegar or other liquids, are turned into the condiment known as mustard. The seeds are also pressed to make mustard oil, and the edible leaves can be eaten as mustard greens.

Varieties
Mild white mustard (Sinapis hirta) grows wild in North Africa, the Middle East and Mediterranean Europe and has spread farther by long cultivation; brown or Indian mustard (B. juncea), originally from the foothills of the Himalaya, is grown commercially in the UK, Canada, Denmark and the US; black mustard (B. nigra) in Argentina, Chile, the US and some European countries. Canada grows 90% of all the mustard seed for the international market. The Canadian province of Saskatchewan produces almost half of the world’s supply of mustard seed.

In addition to the mustards, the genus Brassica also includes cabbages, cauliflower, rapeseed, and turnips.

Although some varieties of mustard plants were well-established crops in Hellenistic and Roman times, Zohary and Hopf note that: “There are almost no archeological records available for any of these crops.” Wild forms of mustard and its relatives the radish and turnip can be found over west Asia and Europe, suggesting that their domestication took place somewhere in that area. However, Zohary and Hopf conclude: “Suggestions as to the origins of these plants are necessarily based on linguistic considerations.

There has been recent research into varieties of mustards that have a high oil content for use in the production of biodiesel, a renewable liquid fuel similar to diesel fuel. The biodiesel made from mustard oil has good cold flow properties and cetane ratings. The leftover meal after pressing out the oil has also been found to be an effective pesticide.

An interesting genetic relationship between many species of mustard has been observed, and is described as the Triangle of U.

Source: http://en.wikipedia.org/wiki/Mustard_plant

See Also: same day delivery flower, florist Canada, florists deliver

Vicia is a genus of about 140 species of flowering plants commonly known as vetches. It is in the legume family (Fabaceae). Member species are native to Europe, Asia and Africa. Some other genera of their subfamily Faboideae also have names containing “vetch”, for example the vetchlings (Lathyrus) or the milk-vetches (Astragalus). The Broad Bean (Vicia faba) is sometimes separated in a monotypic genus Faba; although not often used today, it is of historical importance in plant taxonomy as the namesake of the order Fabales, the Fabaceae and the Faboideae. The tribe Vicieae in which the vetches are placed is named after the genus’ current name. Among the closest living relatives of vetches are the lentils (Lens) and the true peas (Pisum).

Use by humans
Bitter Vetch (V. ervilia) is one of the first domesticated crops. It was grown in the Near East about 9,500 years ago, starting perhaps even one or two millennia earlier during the Pre-Pottery Neolithic A. By the time of the Central European Linear Pottery culture – about 7,000 years ago –, Broad Bean (V. faba) had also been domesticated. Vetch has been found at Neolithic and Eneolithic sites in Bulgaria, Hungary and Slovakia. And at the same time, at the opposite end of Eurasia, the Hoabinhian people also utilized the Broad Bean in their path towards agriculture, as shown by the seeds found in Spirit Cave, Thailand.

Though Bernard of Clairvaux shared bread of vetch meal with his monks during the famine of 1124-26, an emblem of humility, eventually the Bitter Vetch was dropped from human use, save as a crop of last resort in times of starvation: vetches “featured in the frugal diet of the poor until the eighteenth century, and even reappeared on the black market in the South of France during the Second World War”, Maguelonne Toussaint-Samat, of Marseillais background, has remarked. Broad Beans remained prominent though, be it in the Near East where the seeds are mentioned in Hittite and Ancient Egyptian sources dating from more than 3,000 years ago as well as in the Bible, or in the large Celtic Oppidum of Manching from La Tène Europe some 2,200 years ago. Dishes resembling ful medames are attested in the Jerusalem Talmud which was compiled before 400 AD.

In our time, the Common Vetch (V. sativa) has also risen to prominence. Together with Broad Bean cultivars such as Horse Bean or Field Bean, the FAO includes it among the 11 most important pulses in the world. It is grown – like Tufted Vetch (V. cracca) – as a mid-summer pollen source for honeybees, but the main usage of the Common Vetch is as forage for ruminant animals, both as fodder and legume. The Bitter Vetch, too, is grown extensively for this purpose, as are Hairy Vetch (V. villosa, also called Fodder Vetch), Bard Vetch (V. articulataHornem.), French Vetch (V. serratifolia) and Narbon Bean (V. narbonensis). V. benghalensis and Hungarian Vetch (V. pannonica) are cultivated for forage and green manure.

The Hairy Vetch also has well-established uses as green manure and allelopathic cover crop. As regards the Broad Bean, it is known to be a accumulate aluminium in its tissue; on polluted soils it may be useful in phytoremediation but with one permil aluminium in the dry plant (possibly more in the seeds) might not be edible anymore. The robust plants are useful as a beetle bank to provide habitat and shelter for carnivorous beetles and other arthropods to keep down pest invertebrates. When the root nodules of Broad Bean are inoculated with the rhodospirillacean bacterium Azospirillum brasilense and the glomeracean fungus Glomus clarum, the species can also be productively grown in salt-\. In the 1980s, the auxin 4-Cl-IAA was studied in V. amurensis and the Broad Bean, and since 1990, the antibacterial γ-thionins fabatin-1 and -2 have been isolated from the latter species.

Despite a small chromosome count of n=6, the Broad Bean has a high DNA content, making it easy for a micronucleus test of its root tips to recognize genotoxic compounds. A lectin from V. graminea is used to test for the medically significant N blood group.

Source: http://en.wikipedia.org/wiki/Vetch

See Also: UK florist, flower shops delivery, flowers UK, florist Toronto