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A Solid Film Electrode of Intermetallic Ag 2 Hg 3.02 for the Direct Determination of Folic Acid in Fresh and Processed Fruit Juices
Author(s) -
Garcia de Paula Cleide,
Alves de Toledo Renata,
Vaz Carlos Manoel Pedro,
Marques Cordeiro Paulo Jorge,
Batistuti José Paschoal,
Aparecida Pastre Ieda,
Shim Hojae,
Fertonani Fernando Luís
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400512
Subject(s) - detection limit , pear , chemistry , passion fruit , lime , food science , folic acid , nuclear chemistry , chromatography , horticulture , materials science , metallurgy , biology , medicine
AgSIE was used for the direct analysis of folic acid (FA), with a detection limit and lower level of quantitation of 6.8×10 −10 mol L −1 and 2.3×10 −8 mol L −1 . The analysis in fresh and processed fruits was done without any sample pretreatment. In strawberry and acerola juices, FA concentration level values were below the method detection limit. FA was detectable in peach (77.7±0.4 µg L −1 and 64.4±0.5 µg L −1 ), Persian lime (45.4±0.7 µg L −1 ), pineapple Hawaii (66.2±0.4 µg L −1 ), pear pineapple (35.3±0.6 µg L −1 ), cashew (54.4±0.5 µg L −1 ), passion fruit (73.2±0.3 µg L −1 ), and apple (84.4±0.5 µg L −1 ).