Artículos de revistas
Determinação de fósforo biodisponível em rações de peixes utilizando extração assistida por ultra-som e espectrofotometria no visível
Fecha
2009Registro en:
Química Nova. São Paulo, SP, Brazil: Sociedade Brasileira de Química, v. 32, n. 4, p. 923-927, 2009.
0100-4042
1678-7064
10.1590/S0100-40422009000400018
S0100-40422009000400018
S0100-40422009000400018.pdf
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
The aim of the present work was to develop and optimize a method for determination of bioavailable phosphorus in samples of feces and fish feed using ultrasound extraction and subsequent quantification by visible spectrophotometry. Using as extractor solution HNO3 0.50 mol L-1, the great conditions of extraction established were: sample mass - 100 mg, samples granulometry - < 60 µm, sonification time - five cycles of 40 s and ultrasound potency - 136 W. The proposed method was applied in studies of digestibility of this nutrient in different feeds used in diets of juvenile of Nile tilapia.