| Full text | |
| Author(s): |
Paula M. de Moraes
;
Vanessa R. Loureiro
;
Pedro M. Padilha
;
Renato de Cássio F. Neves
;
Mayra A. D. Saleh
;
Felipe A. dos Santos
;
Fábio A. Silva
Total Authors: 7
|
| Document type: | Journal article |
| Source: | Química Nova; v. 32, n. 4, p. 923-927, 2009. |
| Abstract | |
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. (AU) | |