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BIBTEX RIS

Kinetics of thermal decomposition processes and kinetics of degradation in rumen liquor of glycerin derived from biodiesel production

2017; Elsevier BV; Volume: 104; Linguagem: Inglês

10.1016/j.indcrop.2017.04.016

1872-633X

Luís Carlos Vinhas Ítavo, Camila Celeste Brandão Ferreira Ítavo, H.V. Petit, Alexandre Menezes Dias, Maria da Conceição dos Santos, Anderson Dias Vieira de Souza, Sandra Regina Goularte, Eduardo Souza Leal, Juliana Antônia Tonetto de Mello, Marcus Vinicius Garcia Niwa, Gabriella Jorgetti de Moraes,

Ruminant Nutrition and Digestive Physiology

The aim of study was to characterize the value of crude glycerin as an energy source and to compare chemical composition, pH, density, in vitro dry matter (DM) digestibility (IVDMD), kinetics of thermal decomposition of mass loss and heat flow and in vitro gas production of crude glycerin to those of purified glycerin. Crude glycerin contained 108 g/kg DM of lipids with a proportion of 707.4 g of unsaturated fatty acids per kg of total fatty acids. The IVDMD was higher for pure than crude glycerin (918 versus 766 g/kg DM). Total gas production of crude glycerin was lower than that of pure glycerin (8.5 versus 14.3 ml gas/100 mg DM). Total energy release was greater for crude than purified glycerin (4996 versus 3713 kJ/kg DM). The quality of crude glycerin suggests that crude glycerin could be incorporated in ruminant diets as an energy source.