Abdel-Rahman et al. 2019 - Egyptian non-alcoholic beverage metals

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.

Wiki pages this source may touch

• Soft Drinks/Carbonated Beverages
• Fruit Juices, Non-Apple
• Yogurt and cultured dairy
• Cadmium
• Lead
• Chromium
• Nickel
• Iron
• Manganese
• Copper

Verification notes

Recovered from the corpus-rescreen queue under the 2026-06-10 inclusion-by-default rule. The file contains direct beverage measurements for multiple heavy-metal analytes and should not have remained blocked in the gap queue.

Page history

The five most recent substantive edits to this page. The full version history lives in git; when DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.