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Pioneer Foods confirms the substance in its Liqui Fruit 330ml red grape juice is not glass



Pioneer Foods can confirm that what was previously visually identified as “shards of glass” found in 330ml cans of Liqui Fruit red grape juice is actually crystals of a naturally occurring substance in products of grapes called potassium bitartrate.


On Saturday 5 September, the company issued a national recall of a single batch of product, based on the likelihood that the substance found in the juice by three consumers were shards of glass. Tertius Carstens, CEO of Pioneer Foods/PepsiCo Sub-Saharan Africa explains that an investigation was immediately launched as to the root cause and extent of the issue.

“Following extensive elemental testing at separate specialist laboratories, we have since received confirmation that the glass-like crystals seen in the Liqui Fruit 330ml red grape juice is in fact the crystalline form of a substance that is commonly found in high concentrations in grapes and products of grapes”.

“The initial visual assessment by a laboratory of the sample as provided by a consumer indicated the matter to be glass. We opted to trigger the recall whilst we awaited the outcome of the technical analysis of the matter given the health and safety risk associated with the potential presence of glass in the product,” states Carstens.

Grapes naturally contain both tartaric acid and potassium. When these two elements bind together under chilly conditions they form potassium bitartrate crystals that present as glass-like particles. Potassium Bitartrate is a natural occurring material and non-toxic and commonly known as cream of tartar when used as a cooking aid.

Given the presence of the crystals, the recall is continuing, and consumers are urged not to consume or dispose of the product but to return it for a full refund.

To date, Pioneer Foods has approximately 70% of the product out of general circulation and under its control. “We’d like to thank all our retail and distribution partners, the National Consumer Commission, and most importantly our loyal consumers for their understanding and assistance with this recall.


We also apologise for any anxiety caused whilst we awaited the outcome of the detailed analysis of the crystals,” concludes Carstens.

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