CARACTERIZAÇÃO DO PERFIL VOLÁTIL E AVALIAÇÃO DA ATIVIDADE ANTIOXIDANTE DE AÇAÍ DE DIFERENTES MUNICÍPIOS DOS ESTADOS DO AMAZONAS E PARÁ
DOI:
https://doi.org/10.36557/2674-9432.2026v5n8p548-569Palavras-chave:
Açaí, Euterpe Oleracea, Compostos Voláteis, Atividade Antioxidante, DPPHResumo
O açaí (Euterpe oleracea Mart.) apresenta importância alimentar, socioeconômica e cultural na região amazônica, sendo composto por substâncias que podem contribuir para suas características sensoriais e propriedades biológicas. O presente estudo teve como objetivo caracterizar o perfil de compostos voláteis e avaliar a atividade antioxidante de amostras de açaí provenientes de diferentes localidades dos estados do Amazonas e Pará. Foram analisadas amostras provenientes dos municípios de Anori, Codajás e Manaquiri, no Amazonas, e do estado do Pará. O perfil volátil foi caracterizado por cromatografia gasosa acoplada à espectrometria de massas, utilizando a técnica de microextração em fase sólida no headspace (HS-SPME-CG-EM). Os compostos identificados foram relacionados às respectivas características odoríferas e avaliados quanto ao valor de atividade odorífera (OAV), quando havia dados de limiar de percepção disponíveis na literatura. A atividade antioxidante foi determinada pelo método de sequestro do radical DPPH, sendo expressa em valores de IC₅₀. Foram observadas diferenças qualitativas e quantitativas no perfil volátil entre as localidades, com predominância de características verdes, herbáceas, frescas, frutadas e florais. O maior OAV foi observado para o (Z)-3-hexen-1-ol na amostra do Pará (399,26), seguido pelo L-limoneno (221,56). Na avaliação antioxidante, os valores de IC₅₀ variaram entre 42,46 ± 2,46 µg/mL, em Anori, e 134,61 ± 3,74 µg/mL, em Manaquiri. Os resultados demonstram variações no perfil volátil e na atividade antioxidante das amostras provenientes das diferentes localidades.
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Copyright (c) 2026 Geovanna de Almeida Campos, Anna Carolina do Nascimento, Antônia Jully Vital da Silva, Me. Rebeca Sakamoto Figueiredo, Dra. Francisca Marta Nascimento de Oliveira Freitas, Me. Walter Sotto Mayor Fernandes Neto
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