Abstract：
:This study approaches the development of a method for the determination of Ca, Mg, Zn, and Fe in liquid and powdered cow milk. The method is based on sample dissolution assisted by ultrasound energy in tetramethylammonium hydroxide (TMAH) media and determination by flame atomic absorption spectrometry (FAAS). Central composite design (CCD) associated with response surface methodology and desirability function allowed the fast and efficient optimization of the variables involved in the performance of the dissolution. The developed dissolution method allowed Ca, Fe, Zn, and Mg determination in milk samples with adequate analytical characteristics for these determinations. Addition/recovery tests and analysis of a certified reference material of skimmed powdered milk (ERM-BD150) have shown that this method presents enough accuracy to carry out these analyses.
journal_name
Food Chemjournal_title
Food chemistryauthors
Dos Santos Alves JP,da Mata Cerqueira UMF,Novaes CG,Barreto JA,Dos Santos Trindade J,Araújo SA,Bezerra MAdoi
10.1016/j.foodchem.2020.127559subject
Has Abstractpub_date
2021-01-01 00:00:00pages
127559eissn
0308-8146issn
1873-7072pii
S0308-8146(20)31421-7journal_volume
334pub_type
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