The use of tobacco as an insecticide, attention will be paid to the tobacco farmers who are suffering from a decline in demand

In response to health concerns and a social smoke-free mood, demand for tobacco has decreased worldwide, in order to save tobacco farmers who are hit, scientiststobaccoWe are searching for new uses.

Tobacco has a history that has been used for horticulturists as a natural insecticide for a few hundred years ago, but in the near future there will be production of pesticides made from tobacco at the industrial level I do not. In a study by Canadian chemists, an efficient extraction method of insecticidal ingredients was found and experiments suggesting that there is sufficient insect repellent effect as a substitute for chemical pesticides currently used in tobacco derived pesticides I heard that the result was also obtained.

Details are as below.Tobacco and its evil cousin nicotine are good as a pesticide

Homemade insecticides with cigarettes in water have a history that has been used by gardener for centuries. The agrochemical industry using tobacco as a raw material is a new income source for tobacco farmers and can also provide environmentally friendly substitutes that replace chemical pesticides currently in use.

University of Western OntarioFaculty of Engineering, Department of Chemical EngineeringCedric BriensProfessors studied methods for producing pesticides from tobacco leaves and in order to obtain an insecticidal oil called "bio oil"Vacuum pyrolysis, The temperature was about 482 degrees Celsius, and the residence time of steam was about 5 seconds was the most efficient.

The bio oil obtained by this method rapidly tolerates existing pesticides and has caused a great deal of damage to potato production in North AmericaColorado beetleWe tested various insect pests, 11 molds, 4 kinds of bacteria, etc., and it was confirmed that effective insecticidal effect was given to all insects subject to the experiment, and 2 kinds of bacteria and mold 1 It seems that the effect of stopping proliferation has been confirmed also against seeds. It was said that there was insecticidal effect even if nicotine was removed from oil.

It is also suggested that the nature of this oil, which is not effective for all microorganisms but effective for several species, may be an advantage to enable selective microbial removal over existing pesticides.

in Science, Posted by darkhorse_log