An improved colorimetric method for the determination of alkylresorcinols in cereals and whole-grain cereal products

Gajda, A.; Kulawinek, Mariola; Kozubek, Arkadiusz

doi:10.1016/j.jfca.2008.04.002

Cited by 31 publications

(28 citation statements)

References 23 publications

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“…The sum of TPC of both fractions was expressed as total polyphenols. Alkylresorcinols were determined by a rapid colorimetric method [19]. One gram of flour sample (0.3 g for bran fractions) were placed into 50-mL tubes and extracted with 40 mL of acetone under magnetic stirring for 48 h at room temperature [20].…”

Section: Analysesmentioning

confidence: 99%

Stone Milling versus Roller Milling in Soft Wheat: Influence on Products Composition

Carcea¹,

Turfani²,

Narducci³

et al. 2019

Foods

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Wholegrain wheat flours are in great demand from consumers worldwide because they are considered healthier then refined flours. They can be obtained by either stone milling, which is experiencing a revival in Europe, or roller milling. In order to study compositional differences due to the milling technology and to explore the possibility of a better qualification of wholegrain flours by means of nutritionally oriented quality parameters, eight mixes of soft wheat grains were stone milled and roller milled and the milling products were analyzed for their protein, ash, lipids, total dietary fibre, total polyphenols and alkylresorcinols content. A wholegrain flour milled with a laboratory disk mill was used as a comparison and a set of seven wholegrain flours purchased on themarket were also analyzed and compared. The particle size distribution of stone milled and recombined roller milled flour was also studied. Considering the above mentioned parameters, we found that there is no compositional difference between a stone milled or a roller milled flour if, in this latter one, the milling streams are all recombined, but the particle size distribution was different. This might have an impact on the technological quality of flours and on the bioavailability of components.

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Section: Analysesmentioning

confidence: 99%

Stone Milling versus Roller Milling in Soft Wheat: Influence on Products Composition

Carcea¹,

Turfani²,

Narducci³

et al. 2019

Foods

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show abstract

“…Currently, a number of methods exist, using GC (18 ), HPLC (19,20), and spectroscopy using the reaction of AR with the dye Fast Blue B (21)(22)(23).…”

Section: Introductionmentioning

confidence: 99%

Rapid and Sensitive Analysis of Alkylresorcinols from Cereal Grains and Products Using HPLC−Coularray-Based Electrochemical Detection

Ross

Kochhar

2009

J. Agric. Food Chem.

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Alkylresorcinols (AR) present in the bran fraction of wheat, rye, and barley grains are of current interest as biomarkers of wholegrain cereal intake. This paper reports the development of a rapid quantitative HPLC method allowing sensitive analysis of AR in cereals in 14 min using coularray (CA) detection. The LOD was 1 ng injected and the LOQ 2.5 ng injected, whereas the intrarun and inter-run CVs were 0.8 and 6.4%, respectively. Analytical recovery determined by spiking ranged from 98 to 107% for AR homologues C15:0-C25:0. The method was used to analyze 79 flour and cereal products, with results in the same range as previous studies using GC analysis. Analysis of wholegrain white wheat were in the same range as other wheat varieties (420-556 microg/g). Use of the CA detector allowed detection of low concentrations of AR in white wheat flour (13-51 microg/g) that had not been reliably detected using previous methods. This method allows rapid throughput analysis of cereal samples, required for validation studies on the use of AR as biomarkers of wholegrain cereal intake.

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“…Dentro de las ventajas de este método se encuentra su alta sensibilidad (se requieren cantidades superiores a 10 µg de AR), pero su mayor desventaja es que era necesario realizar una et al, 1981). Gajda et al (2008). La sal Fast Blue B fue reemplazada por Fast Blue-ZnCl 2 , lo cual aumentó el tiempo de estabilidad del producto de la reacción a 3 h y la sensibilidad, siendo posible la detección de AR a partir de 0.1 µg de AR presentes en la muestra, a partir de estos estudios pioneros se han desarrollado diversos métodos para su cuantificación empleando otras sales de diazonio en medio básico, ácido o neutro, como es el caso de Sampietro et al (2008) quienes usaron la sal de diazonio Fast Blue RR ® en medio básico para determinar la presencia de AR en una muestra, en donde el producto diazo absorbe a una longitud de onda de 480 nm.…”

Section: Características Físico-químicas De Arunclassified

Alquilresorcinoles: Compuestos Naturales con Importancia Biológica

Suaza-García

Coy-Barrera

2014

Rev. Fac. Cienc. Básicas

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RESUMENLos alquilresorcinoles (AR) son un grupo de metabolitos secundarios no isoprenoides, pertenecientes a la familia de los fenoles, a los que se les confieren propiedades biológicamente importantes tales como: antifúngica, antibacterial, citotóxica, antitumoral, antioxidante y como biomarcadores. Estos metabolitos han sido encontrados en diferentes organismos tales como: plantas, hongos, metazoos y bacterias; siendo las rizobacterias una fuente importante de AR. En la presente revisión se presentan algunas de las características más importantes de estos metabolitos con un enfoque descriptivo con el propósito de reseñar la importancia biológica de estos compuestos naturales.Palabras clave: Alquilresorcinoles, Lípidos resorcinólicos, fuentes de alquilresorcinoles, identificación de alquilresorcinoles.ABSTRACT Alkylresorcinols (ARs) are a group of non-isoprenoid secondary metabolites, belonging to the family of phenols. They exhibit important biological properties such as antifungical, antibacterial, cytotoxic, antitumor, antioxidant, and as biomarkers. These metabolites have been found in different organisms such as plants, fungi, metazoan, and bacteria; being rhizobacteria an important source of ARs. In this review, we present some of the most important features of these metabolites with a descriptive approach in order to notice about the biological importance of these natural compounds.

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An improved colorimetric method for the determination of alkylresorcinols in cereals and whole-grain cereal products

Cited by 31 publications

References 23 publications

Stone Milling versus Roller Milling in Soft Wheat: Influence on Products Composition

Stone Milling versus Roller Milling in Soft Wheat: Influence on Products Composition

Rapid and Sensitive Analysis of Alkylresorcinols from Cereal Grains and Products Using HPLC−Coularray-Based Electrochemical Detection

Alquilresorcinoles: Compuestos Naturales con Importancia Biológica

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