A headspace solid-phase microextraction method of use in monitoring hexanal and pentane during storage: Application to liquid infant foods and powdered infant formulas

García‐Llatas, Guadalupe; Lagarda, Marı́a Jesús; Romero, Fernando; Abellán, Pedro; Farré, R.

doi:10.1016/j.foodchem.2006.03.007

Cited by 57 publications

(33 citation statements)

References 34 publications

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“…One of the most studied volatile biomarker for dairy oxidative stress is hexanal since it is one of the major products of fat oxidation, which increases during storage. Hexanal is produced from the oxidation of n‐6 polyunsaturated fatty acids, like linoleic acid, and is usually associated with grassy or metallic‐like off‐flavor in milk and butter . Recently, Asaduzzaman et al monitored milk oxidative stress by following hexanal evolution at 4°C by PTR‐MS.…”

Section: Resultsmentioning

confidence: 99%

Rapid and noninvasive quality control of anhydrous milk fat by PTR‐MS: The effect of storage time and packaging

et al. 2018

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In this study, proton transfer reaction-mass spectrometry (PTR-MS), coupled with a time-of-flight mass analyzer and a multipurpose automatic sampler, was evaluated as a rapid and nondestructive tool for the quality control of anhydrous milk fat. Anhydrous milk fats packed in cardboard and bag-in-box were compared during refrigerated shelf life at 4°C for 9 months. Anhydrous milk fat samples were taken at 120, 180, and 240 days and measured by PTR-MS during storage at 50°C for 11 days. Univariate and multivariate data analysis were performed in order to classify samples according to the packaging type and compare aromatic profiles. Markers related to both packaging and storage duration were identified, and all stored samples were clearly distinguishable from reference fresh samples. Significant differences in some key butter aroma compounds such as 2-pentanone, 2-heptanone, 2/3-methylbutanal, acetoin, and butanoic acid were observed between different types of packaging. During the refrigerated storage, differences related to packaging are more evident, while during the storage at 50°C, the fat oxidation induced by the high temperature becomes the most relevant phenomenon independently of the packaging type. These results indicate the importance of avoiding anhydrous milk fat storage at 50°C for long times during industrial production processes. All together data demonstrated the viability of PTR-MS as a rapid and high-sensitivity tool in agroindustry quality control program.

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Section: Resultsmentioning

confidence: 99%

Rapid and noninvasive quality control of anhydrous milk fat by PTR‐MS: The effect of storage time and packaging

et al. 2018

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“…On the other hand, using SPME resulted in a richer chromatogram (Figure 1-B), while being cleaner and faster way of sample preparation and injection. Furthermore, the reproducibility and robustness of the method is well described and it is a widely adopted methodology in quality control in food science (Bianchi et al, 2007;García-Llatas et al, 2007;Plutowska and Wardencki, 2007;Romeo et al, 2007), pesticides, environmental science and in volatiles substances in general (Pacolay et al, 2006;Balakrishnan et al, 2006;Kayali et al, 2006;Luan et al 2006;Rodríguez et al, 2006;Kolb and Püttmann, 2006).…”

Section: Resultsmentioning

confidence: 99%

Fingerprint of volatiles from plant extracts based on SPME-GC-MS

Siqueira¹,

Alves²,

Zani³

2007

Rev. bras. farmacogn.

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RESUMO: "Perfi s gerados dos voláteis obtidos de extratos de plantas através da técnica MEFS-CG-EM" O Laboratório de Química de Produtos Naturais (LQPN) possui uma coleção ex situ de pequenas quantidades de extratos obtidos de componentes da biodiversidade para fi ns de bioprospecção. Esta coleção conta atualmente com cerca de 4000 extratos de mais de 1000 espécies distintas. Os extratos são usados na identifi cação de novos compostos bioativos que possam servir para o desenvolvimento de novas drogas contra as doenças negligenciadas como leishmanioses, doença de Chagas, malária e tuberculose. Após serem submetidos aos ensaios biológicos, os extratos que apresentaram atividade precisam ser preparados em uma quantidade maior a partir de recoletas dos vegetais, para permitir o isolamento dos seus componentes ativos. Neste ponto, o desenvolvimento de metodologias padronizadas que permitam comparar a composição dos extratos recém obtidos com a dos extratos originais são importantes para confi rmação da identidade dos mesmos. Avaliou-se a metodologia de Micro-Extração em Fase Sólida, seguida de análise por Cromatografi a Gasosa e Espectrometria de Massa (MEFS-CG-EM). Foi usado o software AMDIS (Automatic Mass Spectral Deconvolution and Identifi cation System) para armazenar e comparar os perfi s gerados (fi ngerprint). Quarenta e seis amostras foram analisadas, onde foi possível inferir sobre os constituintes de cada amostra e traçar um perfi l de composição e de componentes comuns. Foram analisados nove grupos de amostras, coletadas em diferentes períodos onde se estudou as variações sazonais ocorridas entre elas. Os resultados mostraram a viabilidade do uso desta ferramenta para monitorar a composição de extratos, permitindo avaliar alterações químicas durante a estocagem, a comparação entre extratos oriundos de coletas distintas, e na ocorrência de alguns componentes em diferentes extratos. Unitermos:Cromatografi a gasosa-espectrometria de massa (CGEM), perfi l gerado, extratos vegetais, micro-extração em fase sólida (MEFS), AMDIS. ABSTRACT:The Laboratory of Chemistry of Natural Products has an ex situ collection of extracts from organisms of the biodiversity aiming at bioprospecting. Nowadays the collection has about 4000 extracts from 1000 different species. Extracts are used to identify new bioactive compounds that could be useful for developing new drugs against neglected diseases like leishmaniosis, Chagas disease, malaria and tuberculosis. After biologic assays, the bioactive extracts need to be prepared in larger quantity to allow isolation and characterization of the bioactive component. At this time, it is important to not only confi rm the bioactivity of new extract but also check if its composition is similar to the old one. It was evaluated the ability of Solid Phase Microextraction and Gas Chromatography-Mass Spectrometry analysis (SPME-GC-MS). It was used the AMDIS (Automatic Mass Spectral Deconvolution and Identifi cation System) software as tools to collect and to compare the chromatographic profi l...

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“…As previously mentioned, hydroperoxides are highly reactive compounds that decompose rapidly, yielding a complex mixture of volatile and non-volatile compounds such as aldehydes, ketones, hydrocarbons etc. which may affect the overall quality of product (García-Llatas, Legarda, Romero, Abellá n, & Farré , 2006). Prior to irradiation, nine compounds were identified belonging to six chemical classes of aldehydes, ketones, alkanes, alcohols and aromatic hydrocarbons.…”

Section: Volatile Compoundsmentioning

confidence: 99%

Effect of γ-irradiation on the physicochemical and sensory properties of cashew nuts (Anacardium occidentale L.)

Mexis

Kontominas

2009

LWT - Food Science and Technology

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A headspace solid-phase microextraction method of use in monitoring hexanal and pentane during storage: Application to liquid infant foods and powdered infant formulas

Cited by 57 publications

References 34 publications

Rapid and noninvasive quality control of anhydrous milk fat by PTR‐MS: The effect of storage time and packaging

Rapid and noninvasive quality control of anhydrous milk fat by PTR‐MS: The effect of storage time and packaging

Fingerprint of volatiles from plant extracts based on SPME-GC-MS

Effect of γ-irradiation on the physicochemical and sensory properties of cashew nuts (Anacardium occidentale L.)

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