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Leobet, Elenir L.; Perin, Ellen C.; Fontanini, José I. C.; Prado, Naimara V.; Oro, Sheila R.; Burgardt, Vânia C. F.; Alfaro, Alexandre T.; Machado-Lunkes, Alessandra
Drying technology, 08/2020, Volume: 38, Issue: 11Journal Article
The drying processing of agglomerated instant coffee can change the quality of the product due to the production of volatile compounds associated with the undesirable cereal aroma. Using fractional factorial planning, this study aimed to understand how the processing parameters (burner temperature, BT; steam pressure, SP; process air flow, AF; and fluidized hot bed section, LT) influenced the volatile profiles. The BT, AF, and the interaction of these variables (BT*AF) have significant influence (p < 0.10) on cereal aroma intensity. Results from the principal component analysis showed that 4,5-dimethylthiazole, 2-ethyl-3-methylpyrazine, and 4-ethyl-2-methoxyphenol are related to the undesirable cereal aroma. The agglomeration process of coffee affects the volatile compounds Burner temperature and process air flow significantly interfere in the cereal aroma of coffee The usage of intermediate parameters in the agglomeration process reduces the cereal aroma
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