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Determination of volatiles in beer using solid-phase microextraction in combination with gas chromatography/mass spektrometry
GC headspace technique solid phase microextraction volatile compounds
2014/7/10
Headspace solid phase microextraction and purge and trap analysis were used for the determination of volatiles in beer. These methods were compared with the analysis of unconcentrated gas phase and li...
Multivariate analysis of wheat flour dough sugars, gas production, and dough development at different fermentation times
rheofermentometer yeast fermentable sugars Principal Component Analysis HPLC
2014/2/24
A Principal Component Analysis method based on multivariate analysis was used to evaluate the correlation between the fermentable sugar content of dough and its behaviour during fermentation at differ...
Preparation of flaxseed for lignan determination by gas chromatography–mass spectrometry method
defatting extraction GC/MS hydrolysis lignans
2014/2/25
Since 1980s, several methods for the determination of lignans in food samples have been developed depending on the types of lignans and foods analysed, but mostly on flaxseed as a reference food. In t...
Comparison of Chemical and Microbiological Parameters of Charcoal Versus Gas and Solar Energy Treated Milk
Chemical charcoal gas milk solar energy
2010/9/30
The effect of heat treatment using different sources of heat on the chemical composition and
microbial quality of milk was studied. Raw cow, goat and sheep milk were heated with charcoal, gas and sol...
A Mathematical Model of the Modified Atmosphere Packaging (MAP) System for the Gas Transmission Rate of Fruit Produce
MAP mathematical model gas transmission rate shelf-life of fruit
2010/8/11
A mathematical model to predict oxygen, carbon dioxide, and water vapour exchanges in non-perforated and micro-perforated modified atmosphere packaging films has successfully been proposed. The transm...
Predicting Gas Concentrations of Welsh Onion in Polymeric Film Packaging and Shipping Containers
modified atmosphere packaging theoretical model respiration rate
2009/7/8
A theoretical model of the atmosphere within polymeric film and shipping containers was developed and validated by experiments with or without Welsh onion (Allium fistulosum L.). There were three proc...
Flavor Design of Sesame-flavored Dressing Using Gas Chromatography/Olfactometry and Food Kansei Model
sesame-flavored dressing solid-phase microextraction (SPME) sensory analysis
2009/5/31
Instrumental and sensory analyses were carried out on sesame-flavored dressings to identify the odorants affecting their perceived quality. The sampling of the odor-active compounds was performed by s...
Determination of Amitraz Residue by Headspace Gas Chromatography in Honey and Beeswax Samples from Iran
Amitraz Residue Headspace Gas Chromatography
2016/5/31
In this study, 70 samples of honey and beeswax from different beehives (Eastern and Western Azerbaijan, Ardabil territory, Iran), markets and store shelves of (Tehran, Iran) were collected during 2006...
Determination of Reductones, Furans and Organic Acids in Aqueous Model Matrices Using Solid-Phase Extraction and Gas Chromatography/Mass Spectrometry
reductone furan organic acid
2009/5/31
A method using solid-phase extraction (SPE) and GC-MS was developed for the determination of a series of polar and unstable flavor compounds: reductones, furans and volatile organic acids, in aqueous ...
The Effect of Liquid Absorption on Gas Barrier Properties of Triplex Film Coated with Silicon Oxide
barrier properties SiOx temperature test solutions
2009/3/19
Polymeric triplex film with SiOx deposit (polyethylene terephthalate/polyethylene terephthalate+ SiOx/polyethylene) was analysed for its gas permeance characteristics. For this purpose the permeance o...
Plasma-oxidative Degradation of Polyphenolics – Influence of Non-thermal Gas Discharges with Respect to Fresh Produce Processing
Keywords:non-thermal plasma Atmospheric Pressure Plasma Jet (APPJ) flavonoids
2014/3/10
Non-thermal plasma treatment is a promising technology to enhance the shelf-life of fresh or minimaly processed food. An efficient inactivation of microorganisms comes along with a moderate heating of...
Determination of Amitraz Residue by Headspace Gas Chromatography in Honey and Beeswax Samples from Iran
Amitraz Residue Headspace Gas Chromatography Honey Beeswax Iran
2009/1/21
In this study, 70 samples of honey and beeswax from different beehives (Eastern and Western Azerbaijan, Ardabil territory, Iran), markets and store shelves of (Tehran, Iran) were collected during 2006...
Quantitative Analysis of in Traditional Egyptian Foods (Koushary and Foul Medams), Black Tea, Instant Coffee and Bottled Waters by Solid Phase Extraction-Capillary Gas Chromatography-Mass Spectroscopy
Phthalates Plasticizers Egyptian Foods
2016/5/31
In the present study, method of solid-phase extraction followed by capillary gas chromatography coupled to mass spectrometry (SPE-GC-MS) was used for quantitative analysis of trace levels of phthalate...
Rapid Determination of Cholesterol in Milk and Milk Products by Direct Saponification and Capillary Gas Chromatography
cholesterol milk products capillary gas chromatography
2008/3/28
A simple method is described for the determination of cholesterol in milk and milk products. Samples (0.2 g) are saponified in capped tubes with 0.5 M methanolic KOH solution by heating for 15 min at ...
Method for Assaying Volatile Compounds by Headspace Gas Chromatography and Application to Growing Starter Cultures
headspace gas chromatography diacetyl leuconostoc mixed culture
2008/3/22
Automatic headspace gas chromatography was used to assay volatile compounds in fermented milks, including diacetyl, which is of particular interest because of its aromatic properties. -Acetolactic aci...