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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - July 9, 1974, Lethbridge, Alberta July 1974 THE LETHBRIDQE HERALD Standard aid to diabetics may help rapeseed industry SASKATOON A stan- dard aid to diabetics may become the basis of testing for new commercial varieties in Canada's multi million dollar rapeseed industry. The first of so called double zero rapeseed was planted this spring. When the crop reaches it will need a new test to dis- tinguish it from all other varieties. When enough seed is available for large scale commercial the variety will be in strong demand. The industry will want to keep double zero separate throughout the en- tire domestic and inter- national handling and marketing systems. Work at the Agriculture Canada Research Station here has developed a sim- ple test to do the job based 9n a standard test tape which diabetics use to check sugar levels in urine. test is quick and says Dr. Ian a biochemist at the station who developed the method. is also inexpensive and cculd be used at arimary or country 'levators if Double zero rapeseed contains lowered amounts of two natural compounds which have caused un- wanted problems for growers and processors of the oilseed crop in recent years. The first erucic was branded as undesirable in edible oil extracted from the crop. In plant breeders developed new varieties with low levels of the acid and the industry made a switch to low erucic acid or LEAR varieties. The second group of com- called remained in the crop to pose poten- tial problems with the pro- tein rich meal that remains after oil extraction. Steps in processing can remove the but the best solution was tc develop rapeseed varieties which contain neither erucic acid nor glucosinolates. The first such double zero called was developed at the University of Manitoba and licensed this year by Agriculture Canada. Commercial growers are increasing the seed this summer. X-rays help trace Indian trade routes VANCOUVER lac combination of physics and archeology is being used to help trace human history and sometimes the results are revolutionary. A physics professor at Simon Eraser University is using x-rays to trace the trade routes of Indians liv- ing in British Columbia DOO years ago. Erie Nelson uses x-ray fluorescence analysis to trace the few Pacific Northwest varieties of ob- a cutting tool which Indians traded everywhere. R. R. Haering. Universi- ty of British Columbia physics said that with proven application of Mr. Nelson's 'we may be able to de- termine the evolution of trade patterns we may even je able to tell whether or lot man did come to North from Mr. Nelson has used x- ray bombardment to sroduce atomic of obsidian from Mount Ed- near Telegraph Creek ind Anahirh near Ob- sidian only B.C. sources of well as the few locations in Oregon where the volcanic naterial may be found. He then checks the 'ingerprints of obsidian ar- tifacts found elsewhere to determine where the obsi- dian came from. The detective work already has produced patterns of obsidian trade which show the route Alex- ander MacKenzie used to reach the Pacific in 1793 was one of the main Indian trading routes for many years. Older artifacts dating back years have con- firmed trade Mr. Haering said. He said that Mr. Nelson's technique eventually may be applied to other to history and perhaps to criminology because many objects have definite x-ray fingerprints. looks extremely Mr. Haering said believe the next real expansion in science will come on the inner fron- tiers where sciences over- rather than the outer frontiers where individual sciences push outwards in their own directions because the double zero variety looks the same as other the industry needs a test to identify and segregate it. Glucosinolates contain the same sugar that diabetics must be on the watch against showing up as excess in their system. test paper is available which gives a green color reaction ac- cording to the amount of glucose in Dr. McGregor says. wondered if the diabetics' simple test could be used to detect the amount of glucose released from glucosmolates in crushed rapeseed. A test using the color reaction tape was used to guide plant breeders in selecting low glucosinolate but it needed refinement to give the accuracy required for a commercial The refinement came when Dr. McGregor noted that adding a little char- coal to his test solutions removed something from the seed extracts that was interfering with the color reaction. The final method reads something like take a quarter teaspoon of' rapeseed and grind in a small mortar until well add half a teas- poon of water and mix to a add another half a teaspoon of plus half a teaspoon of char- filter and test the solution with test tape. A green color indicates glucose in the extract and glucosinolates in the seed. Double zero or low glucosinolate varieties give almost no color reac- tion. Dr. McGregor has the range of green color from the tape graded on a scale from one to nine. Low glucosinolate rapeseed scores between one and other varieties score up to nine. test takes about five minutes and uses low cost he says. think it could easily be used at primary elevators for double zero That will depend upon the decision of the Cana- dian Grain the federal agency respon- sible for grading cereals and oilseeds in Canada. The test method has been turned over to the Commis- sion for evaluation. If it is accepted as an of- ficial test for double the industry will gain a simple method which one day may spot low erucic acid varieties as well. At the test for LEAR varieties is sophisticated and requires expensive equipment Only 2 few laboratories are qualified to do the test. To enter today's new low glucosinolate varieties must also be low Why are North American farmers able to outproduce the farmers of all other The farmer is educated and runs his farm on sound business principles. He is also well informed of market conditions and agriculture research through a vast network of both government and free enterprise communi- cations. stop at the QUEENS DEN across the street from the opera house I BELMORE'S MUSEUM in erucic in other words double zero. If the industry eventually reaches total double zero the glucosinolate test will automatically guarantee low erucic acid. HE DOESN'T HAVE TIME TOCO It's a fact. Most news- paper carriers do pretty well in later years. Maybe it's because they've de- veloped more self-dis- or possibly be- cause they just have more energy. Whatever the newspaper car- riers do have a special quality about them. They're too busy earning and learning to go wrong. If you would like to your son or daughter join this elite inquire today about possible ute openings in your a. Contact the Circulation Man- ager of this Newspaper lor further information. The Utlibrufoe Her.Utl ALBERTA AGRICULTURAL ROLLER CHAIN MADE-UP DRIVE CHAINS STANDARD ROLLER CHAIN Sove time. Replace worn or lost drive chains with a ready- made chain AVAILABLE NOW AT Oliver Industrial Supply 236 36th St. N. Lethbrldga Phone 327-1571 or the Oliver Dealer nearest you ;