The objective of this work was the detection and traceability of the occurrence of diethyl phthalate (DEP) migrating from flexible packaging to food. Brazil is one of the largest producers of flexible plastics widely used in food. The evaluation of migrations of contaminants for food, mainly fatty foods, elucidates the possible transmission of diseases through the daily consumption of migrant contaminants from packaging. Throughout an accurate and highly specific methodology, with no use of simulants or organic solvents during sample preparation, the proposal of this study obtained a direct DEP ranking through migration traceability via headspace: HS-GC-MS. Of the 9 samples of flexible packaging and packaged foods analyzed, DEP was identified in 100%, thus confirming its occurrence in foods. Despite the storage conditions: temperature, shelf life, fat content of the products and the manufacturer’s assessment of use. It is urgent to review official standards to promote intense restrictions on the occurrence of DEP in food and encourage the benefits of reflecting daily consumption habits. (DEP methodology preparation headspace HSGCMS. HSGCMS HS GC MS. MS HS-GC-MS analyzed 100 100% conditions temperature life manufacturers manufacturer s habits 10 1

RESUMO O uso de antioxidantes naturais de plantas tem sido uma abordagem alternativa aos antioxidantes sintéticos. O objetivo desse trabalho foi avaliar a estabilidade oxidativa do óleo de soja com adição de extrato de folhas de Curcuma longa L. em comparação com antioxidante sintético hidroxitolueno butilado (BHT). Ao óleo, adicionou-se o extrato etanólico de folhas de Curcuma longa L. nas seguintes concentrações 0.5%, 1.0%, 1.5%, submetidos a aquecimento a 60 °C ±2, por um período de 12 dias. Analises dos parâmetros da estabilidade oxidativa: índice de peróxido (IP), substâncias reativas ao ácido tiobarbitúrico (TBARS), dienos e trienos conjugados foram feitas a cada 3 dias. Os resultados foram promissores, os óleos com extrato de folha de Curcuma longa L. apresentou redução de todos os parâmetros indicativos de deterioração oxidativa, com influência da concentração e do tempo de estudo. A concentração 0,5% foi menos efetiva, os parâmetros não sofreram grandes variações. O IP foi menor em todos os tratamentos até o 3° dia, no óleo de soja com extrato de 1.5% o valore de índice de peroxido foi menor que o antioxidante sintético e o branco nos dias (6 a 12). Quanto ao TBARS a maior produção foi observada no branco nos dias (6 a 12) e os menores valores de TBARS foram evidenciados no óleo de soja com extrato 1.5%, para a mesma concentração os dienos conjugados variaram entre 2.05 a 8.6, e os trienos de 0.57 a 1.59. sintéticos L BHT. BHT . (BHT) adicionouse adicionou se 05 0 5 0.5% 10 1 1.0% 15 6 C 2 ±2 IP, , (IP) TBARS, (TBARS) promissores estudo 0,5 efetiva variações dia 1.5 ( 12. 205 2.0 86 8 8.6 057 57 0.5 159 59 1.59 (BHT 1.0 ± (IP (TBARS 0, 1. 20 2. 8. 0.

ABSTRACT The use of natural antioxidants extracted from plants is an alternative to the application of synthetic antioxidants. In this study, we evaluated the oxidative stability of soybean oil after the addition of Curcuma longa L. leaf extracts compared to its oxidative stability with the synthetic antioxidant butylated hydroxytoluene (BHT Different concentrations (0.5%, 1.0%, and 1.5%) of ethanolic extract of Curcuma longa L. leaves were added to the oil, and the mixture was heated at 60 ±2 °C for 12 days. Several parameters of oxidative stability, including the peroxide index (PI), thiobarbituric acid reactive substances (TBARS), and conjugated dienes and trienes, were analyzed every three days. The results were promising, the oils to which the Curcuma longa L. leaf extract was added showed a reduction in all parameters, indicating oxidative deterioration under the influence of the concentration of the extract and the duration of treatment. The extract was less effective at low concentrations (0.5%), the parameters did not vary considerably. The PI was low in all treatments until the third day. The PI of the soybean oil treated with 1.5% extract was lower than that after treatment with the synthetic antioxidant and the blank treatment on days 6 to 12. The highest production of TBARS was observed in the blank treatment on days 6 to 12, and the lowest values of TBARS were recorded in the soybean oil treated with 1.5% extract. For the same concentration, the conjugated dienes varied from 2.05 to 8.6, and the trienes from 0.57 to 1.59. study L BHT 0.5%, 05 0 5 (0.5% 10 1 1.0% 15 2 ± C PI, , (PI) TBARS, (TBARS) promising 0.5% (0.5%) considerably day 1.5 205 2.0 86 8 8.6 057 57 0.5 159 59 1.59 (0.5 1.0 (PI (TBARS 1. 20 2. 8. 0. (0. (0 (