Heavy Metal Index
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Heavy metals content in some non-alcoholic beverages (carbonated drinks, flavored yogurt drinks, and juice drinks) of the Egyptian markets

Abdel-Rahman and colleagues measured trace metals in carbonated drinks, flavored yogurt drinks, and juice drinks sold in Egypt.

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Overview

Abdel-Rahman and colleagues measured trace metals in carbonated drinks, flavored yogurt drinks, and juice drinks sold in Egypt. This is direct a1 product-occurrence evidence with source-reported concentrations in mg/kg.

Key numbers

The study covered 54 beverage samples: 12 flavored yogurt drinks, 18 juice drinks, and 24 carbonated drinks.

Table 1 reports that all tested carbonated drinks were below detection for Pb, Cd, and Cr. Measured carbonated-drink metals included copper at 0.06-0.21 mg/kg, iron at 1.29-31.63 mg/kg, and nickel up to 0.24 mg/kg in canned Mirinda.

Table 2 reports that all tested juices were below detection for Pb, Cd, and Cr. The highest juice values reported were in oriental hibiscus juice: Fe 43.88 mg/kg, Ni 0.53 mg/kg, and Mn 1.24 mg/kg.

Table 3 reports that all flavored yogurt drinks were below detection for Pb, Cd, and Cr. Nickel ranged up to 1.37 mg/kg in peach yogurt drink. Table 4 summarizes category averages, with Pb, Cd, and Cr absent in all three beverage groups and average iron highest in juices (19.485 mg/kg).

Methods (brief)

Juice and yogurt drinks were digested by dry ashing, while carbonated drinks were digested by a wet-acid procedure. Metals were quantified by ICP-OES, with results analyzed by one-way ANOVA and reported as the average of three experiments.

Implications

Certification: Direct packaged-beverage occurrence evidence. The reported non-detects for Pb, Cd, and Cr are still routeable evidence because the paper explicitly assayed them.

Courses: Useful example of packaging-format and beverage-type differences, especially the higher iron values in canned carbonated drinks and the contrast between toxic-metal non-detects and measurable essential/trace metals.

App: Eligible for beverage-occurrence context once synthesized.

Update history

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