DETERMINATION OF LEAD CONTAMINATION IN COCOA-FLAVORED PROTEIN POWDER SUPPLEMENTS AVAILABLE IN THAILAND
Keywords:
Protein powder supplement, Lead, Whey protein, Plant-based proteinAbstract
This study was survey research aimed to determine the concentration of lead (Pb) in cocoa- and chocolate-flavored protein powder products available in Thailand and classify the results according to product types. This laboratory-based descriptive study selected 20 samples using purposive sampling, including 10 whey protein products and 10 plant-based protein products. Lead concentrations were determined using Inductively Coupled Plasma–Optical Emission Spectrometry (ICP-OES) according to the AOAC standard method.
The results showed that all 20 samples had lead concentrations below the detection limit of the analytical method (LOD = 0.12 mg/kg). Both whey protein and plant-based protein groups showed Not Detected results in all samples. Therefore, differences in lead concentrations between the two product groups could not be assessed because all detected values were below the analytical detection limit
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