Evaluation of the Volatile Composition and Sensory Properties of Five Species of Microalgae

Durme, Jim Van; Goiris, Koen; Winne, Ann De; Cooman, Luc De; Muylaert, Koenraad

doi:10.1021/jf403112k

Cited by 105 publications

(87 citation statements)

References 67 publications

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“…These aldehydes can provide several notes to food matrices depending on the number of carbon atoms and the degree of saturation. The structures formed were C 2 and C 4 compounds; the short chain linear aldehydes are often derived from chemical lipid oxidation and feature a green-like, fruit-like, and A mass spectrum and LRI agree with those of an authentic compound run on the DB-wax column, B mass spectrum agrees with reference spectrum in the NIST mass spectral data base and LRI agrees with those in the literature a Linear retention indices in the DB-Wax column b Detected in medium containing glucose (g) and/or fructose (f) c According to Acree and Arn (2015) malt-like odor (Durme et al 2013). Decanal (peak 40) is the second major compound in 0 h of residence time (229.80 μg mg −1 ).…”

Section: Resultssupporting

confidence: 75%

“…The other aldehyde formed (3-methylbutanal) also has been found in other microalgae species (Sun et al 2012;Durme et al 2013), and the major aldehyde produced was acetaldehyde (41.8 μg mg −1 ) at 48 h; this compound shows an attractive odor description (fruit) for the food industry.…”

Section: Resultsmentioning

confidence: 62%

“…These compounds are a chemical signature of cyanobacteria and have been confirmed in studies involving the identification of organic volatiles in these microorganisms (Ozaki et al 2008;Sun et al 2012;Durme et al 2013;). The biosynthesis of peaks 13 and 26 is known to be generated from 2-keto acid; these keto acids are Fig.…”

Section: Resultsmentioning

confidence: 71%

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Biogeneration of volatile organic compounds produced by Phormidium autumnale in heterotrophic bioreactor

et al. 2015

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The objective of this study was to investigate the volatile organic compounds (VOCs) produced from heterotrophic cultivation of the cyanobacterium Phormidium autumnale with different sources of monosaccharides. The volatiles were isolated by headspace solid-phase micro-extraction in different residence times, separated by gas chromatography, and identified by mass spectrometry (SPME-GC/MS). The profile of volatiles contained a total of 44 volatile compounds when P. autumnale was grown heterotrophically on glucose and 35 when grown on fructose. A combined total of 68 compounds was identified and 11 volatiles were common to both extracts. The compound 3-methyl-butanol was identified among the major volatile compounds formed, reaching a concentration of 141.5 μg mg −1 dry weight for the glucosegrown cultures and 69.5 μg mg −1 for the fructose-grown cultures after 144 h. Many of the compounds detected during heterotrophic cultivation originated from terpenoids (β-ionone, β-cyclocitral, and 5,6-epoxy-β-ionone), fatty acids (hexanol, hexanal), or the 2-keto acid pathway (3-methyl-butanol, propanol, butanol).

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 62%

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Biogeneration of volatile organic compounds produced by Phormidium autumnale in heterotrophic bioreactor

et al. 2015

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“…Dos componentes identificados em ambos os cultivos, 3-metilbutanal (2,2 µg/mg) destaca-se como majoritário no período de 144h, seguido pelo 3-octenal (2,1 µg/mg). Conforme Durme et al (2013), os aldeídos de cadeia linear curta são frequentemente derivados de oxidação lipídica química, e as estruturas ramificadas e aldeídos aromáticos são tipicamente formados pela oxidação enzimática de lipídios e proteínas. A produção de β-ciclocitral pode ser relacionada com a clivagem enzimática de moléculas de β-caroteno presente na biomassa microalgal, sugerindo a produção pela via biosintética dos terpenos.…”

Section: Resultado E Discussãounclassified

“…Esse composto já foi encontrado em microalgas como Chlorella vulgaris e Scenedesmus sp. (Rzama et al, 1995;Durme et al, 2013;Dudareva et al, 2013). O esclarecimento das rotas bioquímicas poderá direcionar a produção de biomoléculas específicas do metabolismo microalgal.…”

Section: Resultado E Discussãounclassified

PRODUÇÃO DE ALDEÍDOS A PARTIR DO CULTIVO HETEROTRÓFICO DE Phormidium autumnale COM MONOSSACARÍDEOS COMO FONTE DE CARBONO EXÓGENA

Fernandes¹,

Santos²,

Nogara³

et al. 2015

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015

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RESUMO -A elucidação da fase gasosa do sistema de cultivo heterotrófico é importante na consolidação da tecnologia para a exploração industrial. O objetivo do trabalho foi avaliar a formação de aldeídos em biorreatores heterotróficos da cianobactéria Phormidium aumtunale, utilizando duas fontes glicose e frutose como fonte de carbono exógena. Os experimentos foram realizados em biorreator descontínuo com aeração contínua e ausência de luminosidade. Os compostos orgânicos voláteis foram isolados por microextração em fase sólida no headspace (fibra DVB/Car/PDMS), analisados por cromatografia gasosa acoplada a um detector de massas (SPME-GC-MS). A amostragem foi realizada a cada 24 horas no período de 7 dias correspondendo as fases de crescimento. Ao longo do experimento foram detectados 10 aldeídos, com destaque para o 3-metilbutanal com uma produção total de 356,42 µg.mg biomassa -1 . INTRODUÇÃOConsiderando a grande biodiversidade e os recentes desenvolvimentos na engenharia genética, as microalgas representam uma das fontes mais promissoras para novos bioprodutos, sendo essas um conjunto diversificado de organismos com uma grande diversidade na composição química. Por esses motivos tornam-se extremamente atraentes para bioprospecção e exploração potencial como fontes comerciais de uma grande variedade de biomoléculas para novas fontes de produtos químicos e outros produtos de interesse comercial incluindo metabólitos secundários como os compostos voláteis (BOROWITZKA, 2013 e HARUN et al, 2010.A produção autotrófica é atualmente a mais explorada, em função do metabolismo preferencial fotossintético. Porém a habilidade das microalgas em cultivos heterotróficos utilizando substratos orgânicos para manutenção da existência representa uma alternativa no direcionamento de obtenção de compostos não obtidos nos cultivos convencionais fotossintéticos, além de vantagens como a simplificação de operações unitárias do processo

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Storage Conditions Affect Oxidative Stability and Nutritional Composition of Freeze‐Dried Nannochloropsis salina

Safafar

Langvad

Möller³

et al. 2017

Euro J Lipid Sci & Tech

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Microalgae biomass is known as a promising sustainable source of bioactive compounds. Application of microalgae biomass in food and feed products requires information regarding storage stability and optimized storage conditions to minimize unwanted deterioration which downgrades the bioactive composition of microalgae biomass. In order to investigate the worsening of the nutritional quality of freeze dried biomass, a multifactorial storage experiment was conducted on a high EPA (eicosapentaenoic acid) Nannochloropsis salina biomass. The storage time (0–56 days), storage temperature (5, 20, and 40 °C and packaging conditions (under vacuum and ambient pressure) used as main factors. During the 56 days of storage, both time and temperature strongly influenced the oxidation reactions which result in deterioration of bioactive compounds such as carotenoids, tocopherols, and EPA. Lipid deterioration occurred both due to enzyme‐induced lipolysis and autoxidation. Carotenoids and α‐tocopherol contents decreased during storage, but may still have prevented EPA from higher oxidative deteriorations due to their powerful antioxidant properties. Oxidation reactions, which resulted in the creation of primary and secondary volatile oxidation products, occurred mainly at the first days of storage. The resulting volatile compounds(measured by head space gas chromatography‐mass spectrometry) declined further until day 56, probably due to reaction with amino acids, or decomposition to low molecular weight tertiary oxidation compounds. Storage of microalgae at low temperature is more effective than vacuum packaging. Practical Applications: Microalgae are known as a sustainable source of bioactive compounds, and their industrial scale application is growing very fast. Application of microalgae biomass in food, feed, or cosmetics requires the knowledge of the optimum storage conditions to prevent the value‐added compounds from deterioration. Results of this study improve our understanding of the chemical deterioration under different storage conditions and can help the producers/customers to extend the shelf life of microalgae biomass by choosing correct storage conditions. The storage time and conditions influenced the bioactive compounds in freeze‐dried microalgae biomass.

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Evaluation of the Volatile Composition and Sensory Properties of Five Species of Microalgae

Cited by 105 publications

References 67 publications

Biogeneration of volatile organic compounds produced by Phormidium autumnale in heterotrophic bioreactor

Biogeneration of volatile organic compounds produced by Phormidium autumnale in heterotrophic bioreactor

PRODUÇÃO DE ALDEÍDOS A PARTIR DO CULTIVO HETEROTRÓFICO DE Phormidium autumnale COM MONOSSACARÍDEOS COMO FONTE DE CARBONO EXÓGENA

Storage Conditions Affect Oxidative Stability and Nutritional Composition of Freeze‐Dried Nannochloropsis salina

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