About: Comparison of Various Methods for Determination of Water in White Yoghurts

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Water content was determined in 11 samples of white yoghurts. Several techniques, namely Karl Fischer (KF) volumetric titration, near and middle infrared spectroscopy (MIR), oven drying and moisture analyser were used. Optimisations of solvent, titration temperature and extraction time were carried out for the KF titration. Methanol at room temperature with 5 min extraction period was used as final conditions. For the infrared spectroscopy (FTIR) the suitable solvent and the appropriate wavenumbers for water analysis were chosen. The measurement in the near infrared (NIR) region at the wavenumber 10270 cm-1 using acetonitrile as solvent and transmission method was evaluated as the best of the FTIR methods. Based on the comparison of individual methods the oven drying at 105 degrees C seems to be the most suitable, but it is the most time consuming. However, KF volumetric titration and especially FTIR methods appear to be good alternatives to the drying methods. Water content was determined in 11 samples of white yoghurts. Several techniques, namely Karl Fischer (KF) volumetric titration, near and middle infrared spectroscopy (MIR), oven drying and moisture analyser were used. Optimisations of solvent, titration temperature and extraction time were carried out for the KF titration. Methanol at room temperature with 5 min extraction period was used as final conditions. For the infrared spectroscopy (FTIR) the suitable solvent and the appropriate wavenumbers for water analysis were chosen. The measurement in the near infrared (NIR) region at the wavenumber 10270 cm-1 using acetonitrile as solvent and transmission method was evaluated as the best of the FTIR methods. Based on the comparison of individual methods the oven drying at 105 degrees C seems to be the most suitable, but it is the most time consuming. However, KF volumetric titration and especially FTIR methods appear to be good alternatives to the drying methods. (en)
Title	Comparison of Various Methods for Determination of Water in White Yoghurts Comparison of Various Methods for Determination of Water in White Yoghurts (en)
skos:prefLabel	Comparison of Various Methods for Determination of Water in White Yoghurts Comparison of Various Methods for Determination of Water in White Yoghurts (en)
skos:notation	RIV/00216275:25310/09:00008396!RIV10-MSM-25310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/08/1536), Z(MSM0021627502)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Dobiáš, Petr Adam, Martin Ventura, Karel Bajerová, Petra
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	307819
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/09:00008396
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Water Content; FTIR; Karl Fischer Titration; White Yoghurt (en)
http://linked.open.../riv/klicoveSlovo	FTIR Karl Fischer Titration Water Content White Yoghurt
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[4FB90E8E9472]
http://linked.open...i/riv/nazevZdroje	Food Chemistry
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Progressive methods in chemical, food and clinical analysis
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	115
http://linked.open...iv/tvurceVysledku	Adam, Martin Dobiáš, Petr Ventura, Karel Bajerová, Petra
http://linked.open...n/vavai/riv/zamer	Pokročilé analytické a separační metody a jejich aplikace v diagnostice a technologii živých a neživých materiálů
issn	0308-8146
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	25310

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