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Título: Quality of corn grains subjected to drying using direct-fired furnace fed with eucalyptus chips and firewood
Autor(es): Tfouni, Silvia Amélia Verdiani
Gomes, Fernanda Moralez Leme

Palavras-chave: Zea mays
Renewable energy
Polycyclic aromatic hydrocarbons
Food safety
Data do documento: 2021
Citação: Food Science and Technology, Ahead of Print, 2021. DOI:
Resumo: The objective of this study was to evaluate the drying system using a dryer with furnace automatically fed with eucalyptus chips and another dryer manually fed with eucalyptus firewood, as well as assessing the quality of corn grains. Harvest was mechanically performed and the grains were transported by trucks to the storage unit for drying. Corn grain drying was conducted in mixed-flow dryers with a nominal capacity of 100 tons per hour. For air heating, two direct-fired furnaces were used, one automatically fed with eucalyptus chips and the other manually fed with firewood. Corn grains were evaluated for moisture content, apparent specific mass, thousand-grain weight, polycyclic aromatic hydrocarbons (PAHs), electrical conductivity and color. Drying corn grains with direct fire using firewood or chips as fuel causes contamination by PAHs. In general, the use of firewood or chips did not influence the quality of thousand-grain weight, apparent specific mass and color, while the use of chips increased electrical conductivity. It is essential that research advances in this subject, prioritizing the contamination of food, with proven carcinogenic activity, which should be treated as a high risk to public health.
ISSN: 1678-457X
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