Abstract Motivation: The research area metabolomics achieved tremendous popularity and development in the last couple of years. Owing to its unique interdisciplinarity, it requires combine knowledge from various scientific disciplines. Advances high-throughput technology consequently growing quality quantity data put new demands on applied analytical computational methods. Exploration finally generated analyzed datasets furthermore relies powerful tools for mining visualization. Results: To...

Identification of biomarkers capable distinguishing organic and conventional products would be highly welcome to improve the strength food quality assurance. Metabolite profiling was used for biomarker search in wheat grain (Triticum aestivum L.) 11 different old new bread cultivars grown DOK system comparison trial. Metabolites were extracted using methanol analysed by gas chromatography-mass spectrometry.Altogether 48 metabolites 245 non-identified (TAGs) detected cultivar Runal. Principal...

We present results of our machine learning approach to the problem classifying GC-MS data originating from wheat grains different farming systems. The aim is investigate potential algorithms classify be either conventionally grown or organically samples and considering cultivars. motivation work rather obvious on background nowadays increased demand for organic food in post-industrialized societies necessity prove authenticity. set given by up eleven cultivars that have been cultivated both...

The aim of the present study was to differentiate sensory good and bad virgin rapeseed oils based on composition volatile compounds by means linear discriminant analysis (LDA). A total number 64 were detected dynamic headspace GC‐MS combined olfactometry with potential for quality assessment either as aroma‐active compound substance concentration or flavor property a non‐aroma‐active correlation panel assessment. From this initial set substances, 13 showed significant differences in between...

Abstract BACKGROUND Micro‐organisms populate on rapeseed after harvest during storage depending the growing conditions. The composition of bacterial colonization is unknown, although its contribution to profile volatile aroma‐active compounds determines sensory quality virgin cold‐pressed oil. RESULTS From four samples, 46 strains were isolated. By DNA‐sequencing, identification bacteria species and 17 genera was possible. In total, 22 selected, based their typical off‐flavors resembling...

Abstract The solubilisation of non‐starch polysaccharides from cell wall materials (CWM) palm‐kernel and sunflower meals was studied using multi‐component polysaccharidase preparations or fractions thereof. In CWM, the degradability pectic compounds mannose‐containing highest, as estimated 40 to 70% their constituent monosaccharides arabinose, galactose, galacturonic acid, rhamnose mannose. Dimers monomers were produced major neutral acidic end‐products. Mannans in CWM hydrolysed about...

<h3>Problem</h3> Many patients are not satisfied with the accessibility and availability of general practice, they would like to see improvement. <h3>Design</h3> Quality-improvement study pre-intervention post-intervention data collection in 36 practices. <h3>Setting</h3> General practices located south The Netherlands. <h3>Key measures for improvement</h3> Patient satisfaction, experiences awareness; practice information; a mystery patient. <h3>Strategy change</h3> received feedback about...

Abstract Linseed oil is appreciated for its high level of linolenic acid. In order to avoid oxidation, the precious storage lipids are protected in seeds by lignans, tocopherols, and cyclo‐lino peptides. Oxidation specific peptides can be attributed formation a bitter off‐taste cold pressed linseed oils. A complete degradation tocopherols intact CLO, ‐M, ‐N, ‐L, ‐B oxidized forms observed with intermediate oxidation products containing methionine sulfoxide further sulfone during period 25 d...

In the presented study a non-targeted approach using high-performance liquid chromatography coupled to electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-ESI-qToF-MS) combined with chemometric techniques was used build statistical model verify geographic origin of virgin olive oils. The sample preparation by means liquid/liquid extraction polar compounds optimized regarding number multiple extractions, application ultrasonic treatment and temperature during...

Virgin rapeseed (Brassica napus) oil is a valuable niche product, if delivered with high quality. In this study, the effects of moist storage B. napus seeds for 1 to 4 days on seed metabolome and chemo-sensory properties produced oils were determined. The concentrations several primary metabolites, including monosaccharides amino acids, rapidly increased in seeds, probably indicating breakdown compounds support germination. Seed indole glucosinolates slight time offset suggesting that acids...

The effect of the thermal treatment on chemical parameters margarines enriched with phytosteryl fatty acid esters is evaluated. Sterols, acids, polar and volatile compounds, dimers, trimers, tocopherols, 3‐MCPD glycidyl are analyzed applying GPC‐RI, GC‐FID, GC‐MS, HPLC. Additionally, a Rancimat test performed to compare oxidative stability margarines. This study shows that without added both stable at mild temperature 60 °C over period least 7 days. On other side after 15 min pan‐frying 180...

Abstract The aim of the present work is to identify and characterize most important aroma active compounds argan oil from unroasted roasted almonds as well obtained goat‐digested fruits by dynamic headspace GC GC‐olfactometry with dilution analysis classify samples market according their processing. While fresh ground are characterized only seven compounds, in almonds, 22 35 found, respectively. As a result roasting process, 14 factors &gt;64 detected GC‐olfactometry. 17 show significant...