Discrimination of Sebastes viviparus, Sebastes marinus and Sebastes mentella from Faroe Islands by chemometry of the fatty acid profile in heart and gill tissues and in the skull oil

Joensen, Hóraldur; Grahl‐Nielsen, Otto

doi:10.1016/s0305-0491(00)00172-3

Cited by 27 publications

(19 citation statements)

References 18 publications

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“…The value of α-tocopherols in the standard was detected by the UV detector set at 284 nm. The α-tocopherols concentrations in the sample were computed using standard curve of α-tocopherols and reported in mg/100g [12] Fatty acid profiles were assayed using trans-esterification method [13]. Shea butter sample (7.0 -10.0 mg) was transferred into a 15ml thick walled glass tubes, followed by the addition of 1ml anhydrous methanol containing 2M HCl.…”

Section: Chemical Characteristicsmentioning

confidence: 99%

Physico-Chemical characteristics of shea butter(<i>Vitellaria paradoxa</i> C.F. Gaertn.) oil from the Shea district of Uganda

Okullo¹,

Omujal²,

Agea³

et al. 2010

African Journal of Food, Agriculture, Nutrition and Development

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Section: Chemical Characteristicsmentioning

confidence: 99%

Physico-Chemical characteristics of shea butter(<i>Vitellaria paradoxa</i> C.F. Gaertn.) oil from the Shea district of Uganda

Okullo¹,

Omujal²,

Agea³

et al. 2010

African Journal of Food, Agriculture, Nutrition and Development

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“…In contrast, several studies have indicated that heart tissue is the most suitable for differentiating among species (Mjaavatten et al 1998;Joensen and Grahl-Nielsen 2000) because it is composed mainly of structural lipids (phospholipids) that do not change in relation to external factors because they are genetically controlled (Grahl-Nilsen 2005).…”

Section: Multivariate Analysis Of Fatty Acid Profilesmentioning

confidence: 99%

Chemometric identification and nutritional evaluation of three species of Lutjanidae (Perciformes) from the Amazonian Atlantic Coast based on fatty acid profiles

Almeida

Silva

2016

Acta Amaz.

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The fatty acid (FA) profiles of fish species with a similar genetic or geographic origin are important quality parameters that attract bioecological interest because they are influenced by the nutritional habits of the species. The aim of this study was to determine the proximate compositions and FA profiles of heart, brain and muscle tissues from three fish species (Lutjanus purpureus, Lutjanus synagris and Ocyurus chrysurus) captured from the Amazonian Atlantic Coast. In addition to performing nutritional analysis of the FA profiles, principal components analysis (PCA) was performed as a chemometric tool to discriminate among the species. Lutjanus synagris had the highest protein content (18.23%), while O. chrysurus possessed the highest lipid content (4.25%). All of the nutritional quality parameters (the n-6/n-3 and Σ polyunsaturated FA/Σ saturated FA ratios and dietary indices of atherogenicity and thrombogenicity) of the FA profiles of the three species are of interest to consumers. In general, the predominant FA in the tissues of all species analyzed was palmitic acid, followed by stearic acid. Oleic acid was predominant among the monounsaturated FAs, while docosahexaenoic acid was the most prevalent polyunsaturated FA. Chemometric analysis was an effective tool for fish identification. PCA showed that the FA profiles of the brain tissues were optimal for discriminating among the species, with O. chrysurus showing the most different FA profile from the others. The muscle FA profile was the most useful for identifying L. purpureus. KEYWORDS: Multivariate analysis, Gas chromatography, Lutjanus purpureus, Lutjanus synagris, Ocyurus chrysurusIdentificação quimiométrica e avaliação nutricional de três espécies de Lutjanidae (Perciformes) da Costa Atlântica Amazônica com base no perfil de ácidos graxos RESUMO Perfis de ácidos graxos (AGs) de espécies de peixes com uma origem genética ou geográfica semelhante são importantes parâmetros de qualidade e apresentam interesse bioecológico, uma vez que são influenciados pelos hábitos nutricionais das espécies. O objetivo deste estudo foi determinar a composição centesimal e os perfis de AGs do coração, cérebro e músculo de três espécies de peixes (Lutjanus purpureus, Lutjanus synagris e Ocyurus chrysurus) capturados na Costa Atlântica Amazônica. Além de fornecer uma análise nutricional dos perfis de AGs, uma análise de componentes principais (ACP) foi realizada como uma ferramenta quimiométrica para discriminar entre as espécies. Lutjanus synagris teve o maior teor de proteína (18,23%), enquanto O. chrysurus apresentou a maior concentração de lipídios (4,25%). Todos os parâmetros de qualidade nutricional (as proporções de n-6/n-3 e ΣPUFAs/ΣSFAs, e os índices dietéticos de aterogenicidade e trombogenicidade) dos perfis de AGs nas três espécies se mostraram de interesse para os consumidores. Em geral, o AGs predominante nos tecidos de todas as espécies analisadas foi o ácido palmítico, seguido pelo ácido esteárico. O ácido oléico foi predominante entre os AGs mo...

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“…The fatty acid profiles of Baillonella toxisperma Pierre oil were determined using the three stage trans-esterification method [13]. (i) Esterification of the fatty acids in the oil: Baillonella toxisperma Pierre oil sample of about 10.0 ml was transferred into a 15ml glass tubes, followed by the addition of 1ml anhydrous methanol containing 2M HCl.…”

Section: Chemical Characteristicsmentioning

confidence: 99%

Physico-chemical characteristics and fatty acid profile of Baillonella toxisperma pierre traditionally extracted edible oil from Cameroon forests

Fungo¹,

Ngondi²,

Muyonga³

et al. 2017

AJFAND

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Baillonella toxisperma Pierre oil is an edible oil obtained from the seeds of wildly growing timber producing B. toxisperma tree species in Cameroon and the rest of the Congo Basin forests of West and Central Africa. This oil can be an important source of fat that can be used as a source of food to humans and/or a source of raw materials in the cosmetics, pharmaceutical and nutraceutical industries, to produce important commercial products. In the present study, samples of the seeds of B. toxisperma were harvested from three representative villages, each from the site in South and East of Cameroon. Seed oil was extracted using the traditional extraction method of B. toxisperma oils in rural Cameroon. Physico-chemical characteristics including colour, refractive index, viscosity, oil yield, acid value, peroxide value, saponification value, iodine value and α-tocopherols and fatty acid composition of crude oil of B. toxisperma nuts were all investigated. The oil yields from these seeds ranged from 38.2% to 45.6%. The peroxide, saponification and iodine values ranged from 2.13 to 2.69mEq/kg, 182.13 to 188.30 mg KOH/g and 54.41 to 57.98 I2g/100g, respectively. The highest acid value and α-tocopherols were 14.87 mg KOH/g and 24.3 mg/100g, respectively. The main fatty acids of Baillonella toxisperma Pierre oils were oleic, stearic and palmitic acids. Linoleic acid contents varied between 58.6% and 56.97%. The ratio of unsaturated to saturated fatty acids content in these oils was 2:1. The fact that the physico-chemical characteristics and fatty acid profile are comparable to common vegetable oils shows that the B. toxisperma oil of the researched species from Cameroon is a potential source of valuable oil which might be used for edible, cosmetic, pharmaceutical and other industrial applications. This characterization is a bench mark for monitoring the quality of Baillonella toxisperma Pierre oil, from Cameroon and can be used to enhance its local and international trade.

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Discrimination of Sebastes viviparus, Sebastes marinus and Sebastes mentella from Faroe Islands by chemometry of the fatty acid profile in heart and gill tissues and in the skull oil

Cited by 27 publications

References 18 publications

Physico-Chemical characteristics of shea butter(<i>Vitellaria paradoxa</i> C.F. Gaertn.) oil from the Shea district of Uganda

Physico-Chemical characteristics of shea butter(<i>Vitellaria paradoxa</i> C.F. Gaertn.) oil from the Shea district of Uganda

Chemometric identification and nutritional evaluation of three species of Lutjanidae (Perciformes) from the Amazonian Atlantic Coast based on fatty acid profiles

Physico-chemical characteristics and fatty acid profile of Baillonella toxisperma pierre traditionally extracted edible oil from Cameroon forests

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