Availability of hydroxycinnamic acids from coffee after their supplementation to different kinds of food

In novel foods containing different health-promoting components such as protein hydrolysates as well as plant extracts rich in polyphenols it is possible that peptides and phenolics interact and as a consequence the bioactivity of both decreases. The aim of the study was to evaluate the availability of hydroxycinnamic and chlorogenic acids (all described as CHAs) from green coffee (water purified extract) after their interactions with protein hydrolysates derived from egg ovalbumin (EOH), whey proteins (WPH) and soy proteins (SPH) during food processing, depending on temperature during processing, food product composition and CHAs form (free or included in β-cyclodextrin (β-CD)

Effect of process cooking on dietary fiber content in lentil (Lens culinaris) from Poland

Legumes, including lentils are characterized by a high nutritional value, but their importance in Poland is low. Leading producers of lentils are Canada, India, Turkey and the United States [1]. In Poland, only recently we appreciate its importance in the diet. Lentil is one of the richest sources of vegetable protein, fiber, vitamins C, PP and group B, and also contains calcium, phosphorus, iron, and folic acid. It has a beneficial effect on spleen, pancreas and stomach, it strengthens the activity of the kidneys and adrenal glands. It lowers cholesterol and prevents sudden increases of blood sugar

Estabilidad oxidativa de manteca y aceite de girasol suplementados con extractos de café bajo condiciones de almacenamiento

The oxidative stability of sunflower oil and lard supplemented with water extracts of green and roasted, Arabica and Robusta coffee beans was estimated. A decrease in the rate of fat oxidation reactions during the storage of samples for 12 weeks at ambient temperature which resulted from the addition of coffee extracts was evaluated using standard chemical methods such as the determination of peroxide and p-anisidine value and the assays of conjugated dienes and trienes as well as physical methods such as the determination of thermal profile by DSC. The sensory properties of all fat samples were also determined. These measurements showed that 0.1% water coffee extracts in fats decreased (p green Arabica > roasted Robusta > roasted Arabica.La estabilidad oxidativa de manteca y aceite de girasol suplementados con extractos acuosos de granos de café verde o tostado Arábica y Robusta fue estimada. Un descenso en la velocidad de las reacciones de oxidación de la grasa durante el almacenamiento de las muestras durante 12 semana a temperatura ambiente, que resulto de la adición de los extractos de café, fue evaluada usando métodos químicos estándares tales como la determinación de peróxidos y el índice de paranisidina y ensayos de dienos y trienos conjugados, así como métodos físicos tales como la determinación del perfil térmico por DSC. También las propiedades sensoriales de todas las grasas fueron estimadas. Estas medidas mostraron que extractos acuosos de café al 0.1% en la grasa decrecieron (p Arábica verde > Robusta tostado > Arábica tostado

Discrimination of roast and ground coffee aroma

Background: Four analytical approaches were used to evaluate the aroma profile at key stages in roast and ground coffee brew preparation (concentration within the roast and ground coffee and respective coffee brew; concentration in the headspace of the roast and ground coffee and respective brew). Each method was evaluated by the analysis of 15 diverse key aroma compounds that were predefined by odour port analysis. Results: Different methods offered complimentary results for the discrimination of products; the concentration in the coffee brew was found to be the least discriminatory and concentration in the headspace above the roast and ground coffee was shown to be most discriminatory. Conclusions: All approaches should be taken into consideration when classifying roast and ground coffee especially for alignment to sensory perception and consumer insight data as all offer markedly different discrimination abilities due to the variation in volatility, hydrophobicity, air-water partition coefficient and other physicochemical parameters of the key aroma compounds present