DETERMINATION OF MICROELEMENT FOOD ADDITIVE "HIBISCUS" USING METHODS OF SOLID SPECTROPHOTOMETRY
Journal Title: Прогресивні техніка та технології харчових виробництв ресторанного господарства і торгівлі - Year 2015, Vol 1, Issue
Abstract
The scheme determination of trace-element composition of the food additive "Hibiscus" is proposed. Preparation of tests this incineration of the dried up standards of "Hibiscus" at 460 0C and dissolution in dilute HNO3. Content of Pb(II), Cd(II), Zn(II), Hg(II) as determined by interfase spectrophotometry using immobilized on anion exchanger AB-17×8 pyrocatechol violet, methylthymol blue, and Chromazurol S, respectively. The content of Cu(II), Fe(III) and P(V) was determined photometrically, K, Na Ca – by flame spectrophotometry. The content of Pb(II), Cd(II), Zn(II), Hg(II), Cu(II), Fe(III) does not exceed the limit possible concentration. The table of contents of Fe3+ in two times exceeds the data driven to literature. As "Hibiscus" in Ukraine is used as addition, but not as basic food stuff, enhanceable maintenance of Fe3+ can not inflict harm to the organism of man. The proposed methods of determination of ions of metals are characterized by a satisfactory rightness and producibility of results; by a high sensitiveness and selectivity; on express they are better the known analogical and standard methods. The scheme of analysis is characterized by simplicity of experiment, ecolodical safety, does not require a difficult expensive equipment, for maintenance of that a highly skilled personnel and stationary laboratory are needed
Authors and Affiliations
Єлизавета Костенко, Олена Бутенко
Keywords
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- EP ID EP183482
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