Determination of the absolute threshold of detection and evaluation of trace levels of acetaldehyde in mineral water / Determinação do limiar de detecção absoluto e avaliação dos niveis residuais de acetaldeido em aguas minerais acondicionadas em garrafas de polietileno tereftalato (PET)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

The consumption of mineral water in Brazil has been increasing significantly in the last few years. Consumers are becoming more demanding with respect to their buying habits and convenience for use. Due to a series of technical advantages the traditional glass package, high-density polyethylene and PVC for mineral waters have been replaced by the PET package. The PET resin is susceptible to thermal degradation during the injection process, resulting in the formation of acetaldehyde, which can alter the flavor of the mineral waters and many other products packaged in PET. Many sectors involved in the production of PET bottles, like the resin producers, pre forms, bottles and equipment producers have been working together aiming to minimize the formation of acetaldehyde during the production processo On the other hand, the mineral water companies are concerned about the residuallevels of acetaldehyde that can promote flavor modification in their products, which could compromise the quality of the product after bottling. The present work aimed at determining the absolute acetaldehyde lhreshold in mineral water and acetaldehyde residue using gas chromatography in different brands, packaged in PET bottles. Also, to verify if the mineral water bottled in PET bottles showed any significant sensory difference when compared with the same waters packaged in glass bottles

ASSUNTO(S)

acetaldehyde garrafas mineral water bottle acetaldeido aguas minerais

ACESSO AO ARTIGO

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