Efeitos das condições de armazenamento na qualidade de sementes de canola armazenadas durante 180 dias em sistema semi-hermético

Abstract

Canola is the third most produced oilseed in the wolrd. Appreciated for its nutritional qualities, it is used as raw material for the production of edible oil and biofuel. In the year 2016 the crop had a record harvest in the state of Rio Grande do Sul, due to the low cost of production and greater appreciation in the market. In Brazil, the Canola crops are seeded from april to june and harvested once a year. The quality of the grains is an extremely relevant parameter. It may affect the final product’s quality and the throughput of the industrial process as well. To provide proper conditions of drying and storage are indispensable to maintain the quality and quantity of the production. Among the key factors, temperature and humidity are the most important, because, in the case of being far from ideal, they are likely to accelerate grain’s biochemical and metabolic reactions. This leads to losses. Another point of interest is the sustainable growth in Canola’s production in the region. That being stated, the objective of this study is to determine the conditions of humidity in the grains, the temperature and the duration of storage in order to safely maintain the quality of Canola grains. Samples will be stored for 180 days with moisture content of 8, 10, 12 and 14%. The temperatures applied will be of 7, 17 and 27ºC. The results shows that temperatures of 17 and 27°C resulted in the highest quality reductions in the physical-chemical and physiological parameters of seeds stored at 12 and 14% moisture contents. The temperature of 27°C caused quality losses in the samples stored at 10% moinsture contents. At the temperature of 7°C, seed preservation was better maintained at 8, 10 and 12% moisture content during 180 days of storage.