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Abstract

Evaluating the Physicochemical and Microbial Properties of Soybean Oil in Consort with Spectral and Heavy Metal Content Available in Chattogram, Bangladesh

Author(s): Farjana Showline Chaity, Saiful Islam, Md Abu Bakar, Sreebash Chandra Bhattacharjee, Md Sahab Uddin

There are numerous brands of soybean oils in the local markets of South Asian region, some of which are of low quality. This study focused on the evaluation of antimicrobial and physicochemical properties of soybean oils like as, iodine value, peroxide value, free fatty acid value and heavy metal content. Comparatively, low iodine value was noticed, free fatty acid value and peroxide value was in acceptable range but heavy metal content was in alarming array. The concentration of estimated heavy metals in oil samples was found in between 6.20-12.2 for Fe, 5.0-7.5 for Cu, 0.6-3.2 for Ni, 0.31-1.30 μg/g for Pb and Cd was in below detection limit. At room temperature, FTIR spectra showed no peaks at 2166 cm-1 and 3241 cm-1 while two additional peaks appeared in this region after several times frying. The examined soybean oils showed no inhibitory activity against E. coli, S. aureus, and K. pneumoniae.


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