Search results for "Fruit nectar"

showing 2 items of 2 documents

Dielectric Characterization of Fruit Nectars at Low RF Frequencies

2015

Dielectric properties of apple, apricot, peach, and pear nectars were studied in the frequency range from 15 kHz to 30 MHz and the temperature range from 25 to 60 degrees C. Both the relative dielectric constants and the dielectric loss factors decreased by increasing frequency and increased linearly with increasing temperature with values in the order 10(4)-10(2) and 10(5)-10(2), respectively. The power dissipation densities and the power penetration depths were found to increase linearly with temperature. Power dissipation densities remained essentially constant for all the samples while power penetration depths decreased significantly on increasing frequency. The dependence of each of th…

PermittivityMaterials scienceRF heatingSettore CHIM/10 - Chimica Degli AlimentiAnalytical chemistryPhysics::OpticsRelative permittivityDielectricLow frequencyAtmospheric temperature rangeDissipationFruit nectarPermittivityDielectric heatingdielectric constant dielectric loss dielectric spectroscopy fruits apple juice conduction fruit nectar RF heating.Dielectric constantDielectric lossFruit juiceDielectric loss factorLow frequencySettore CHIM/02 - Chimica FisicaFood ScienceInternational Journal of Food Properties
researchProduct

Rapid differentiation of commercial juices and blends by using sugar profiles obtained by capillary zone electrophoresis with indirect UV detection.

2015

A method for the determination of sugars in several fruit juices and nectars by capillary zone electrophoresis with indirect UV-vis detection has been developed. Under optimal conditions, commercial fruit juices and nectars from several fruits were analyzed, and the sugar and cyclamate contents were quantified in less than 6 min. A study for the detection of blends of high-value juices (orange and pineapple) with cheaper alternatives was also developed. For this purpose, different chemometric techniques, based on sugar content ratios, were applied. Linear discriminant analysis showed that fruit juices can be distinguished according to the fruit type, juice blends also being differentiated. …

Quality ControlChemistryCarbohydratesfood and beveragesElectrophoresis CapillaryFood ContaminationGeneral ChemistryOrange (colour)AnanasFruit nectarBeveragesCapillary electrophoresisFruit juiceVitisFood scienceUv detectionGeneral Agricultural and Biological SciencesSugarCitrus sinensisJournal of agricultural and food chemistry
researchProduct