Data/hora: 06/06/2024 03:37:23

Provedor de dados: | 96
País: | Brazil
Título: | Simulation of variations in the composition of samples in the evaluation of neutral detergent fiber contents by using cellulose standard in filter bags made from different textiles
Autores: | Valente,Tiago Neves Pereira; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Paulino,Mário Fonseca; Figueiras,Janderson Florêncio; Souza,Marjorrie Augusto de.
Data: | 2011-07-01
Ano: | 2011
Palavras-chave: | F57; Heat-stable α-amylase; Nylon; Woven-non textile.
Resumo: | The objective of this study was to evaluate the efficiency of using nylon textiles (50 μm), F57 (Ankom®) and non-woven textile (NWT - 100 g/m²) on laboratory evaluation of neutral detergent fiber (NDF) by using quantitative filter paper as purified cellulose standard and by simulating different composition of samples with additions of corn starch, pectin, casein and soybean oil. The quantitative filter paper was processed in a knife mill with a 1-mm screen sieve and the procedures for analyses of NDF contents were performed in a fiber analyzer (Ankom220®). Four experiments were carried out with additions of different ingredients into the filter paper: corn starch added at the levels of 15 or 50%; pectin, 15 or 50%; casein, 10 or 30%; and soybean oil at 0, 5, 10, 15, 25 or 50% of dry matter, respectively. The ratio 20 mg of dry matter/cm² of surface was followed. When it was relevant, in function of the evaluated treatments, heat-stable α-amylase was used. The use of F57 and NWT resulted in accurate estimates of NDF contents whereas nylon textile caused loss of insoluble fibrous particles, compromising accuracy of the results. For samples containing starch, use of heat-stable α-amylase is recommended in the evaluation of NDF contents. Pectin and casein are completely solubilized by neutral detergent solution. Levels of oil higher than 10% cause overestimation of NDF contents.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700027
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982011000700027
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.40 n.7 2011
Fonte: | info:eu-repo/semantics/openAccess