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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - May 28, 1974, Lethbridge, Alberta May 1974 LETHBRIDGE HERALD Yeast strain may 6eat up9 oil spills EDMONTON -An Alberta Research Council scientist has isolated a strain of yeast which thrives in the cold and can be used to oil spills in the fragile Arctic environment. is so easily damaged that you can't scrape up pipeline spills said Dr. Toshi Kaneda in an interview. any damage to the surface erosion would be DI-SYSTON Granular Controls all including strains resistant to chlorinated hydrocarbon insecticides. Long-lasting control up to 6 to 8 weeks after application. No protection gaps. Protection starts the instant plants emerge. More natural insect control. Insecticide inside the plant can't destroy beneficial insect populations when applied as directed. For healthy give aphids-and leafhoppers a smack in their suckers the instant they sit down to dinner. Apply DI-SYSTON Granular as you plant. Your dealer has it now. ftESPONSEabitity to you and naturf CHEMAGRO LIMITED 77 City Centre Drive Mississauga Onlar'O very Yeasts and bacteria have been used experimentally in the United States to clean up oil spills by decomposing various elements in the oil. But it was too cold in Canada for the micro-organisms to grow. So the council obtained soil samples from various northern airstrips soaked with hydrocarbon and them to determine what types of organisms flourished under the harsh conditions. A psychrophilic thriv- in cold strain of the yeast Candida sake was isolated from soil taken in Sachs Harbour. N.W.T.. and was found to the hydrocarbons in said Dr. Kaneda. Can be dried A major advantage of yeast is that it can be stored for a period of time and then he added. Bacteria was harder to preserve. To be used on an oil the yeast must be grown in mixed with mineral nutrients and compressed into pellets. The pellets would be spread over the spill and the yeast would begin growing in the presence of moisture. y.east uses hundreds of in the said Dr. Kaneda. the oil is chewed the yeast dies and other bugs chew up the yeast. There's no environmental messing up at He noted that soil Sludge food crop Fla. Charles O'Neall used three tons of sludge as fertilizer on his expecting it to produce lush green grass. He ended up instead with 40.000 tomatoe plants. or I like said the 63. a cabinet maker. I'm not a nut over and I'm sure I won't be after this is O'Neall said that when he started in the a sewage plant official told him he probably would later find a few tomato plants growing in his lawn. we thought we'd have some here and but certainly not this O'Neall added. even got four or live watermelon and pumpkin vines in with Asked how the sludge produced tomato O'Neall 1 don't quite know how you say it but they came from people. To- mato seeds aren't digested. They just pass normally contains many organisms which would degrade spilled oil over a number of years. idea is to accelerate the process three to four times' so the vegetation will come A light spill could probably be decomposed by yeast in a he said. Although the project still is in the experimental results so far are significant. In use Research is arso progressing on development of a micro- organism which could be used in_the reclamation of the Alberta oil said Dr. Kaneda. oil from the sands is more difficult to decompose than conventional crude he said. people believe heavy oil is what is left over from the biodegration of conventional although he did not share the view. are very few al- kanes the favorite food for in the sands. mixed a combination of 10 or more would probably be more effective than yeast in oil- sand decomposition. The council has obtained soil samples from the northeastern Alberta he said. They contained but the yeasts seemed to be living on something other than the oil. Although environmental protection has been the chief aim of yeast research so Dr. Kaneda and his assistants have also been concerned about the production of protein from yeasts grown on oil. Tests have shown that the yield of psychrophilic yeast is .3 grams for each gram of hydrocarbon said Dr. Kaneda. The yeast would have to be grown in a fermenter with alkanes or heavy oil plus then filtered and dried. It could be used as feed for pigs and chickens. much protein is available on our that it is not now economically feasible to grow the yeast fdr even though the cost is comparable to productioh of soybeans or he said. won't buy a new product unless there is a new But plants in France and Scotland are currently pro- ducing feeds from yeast and in 10 years the demand could exist in he said. 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