Results 211 to 220 of about 25,474 (251)
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Stable isotope dilution analysis of wine fermentation products by HS-SPME-GC-MS
Analytical and Bioanalytical Chemistry, 2005The aim of this study was to quantify, in a single analysis, 31 volatile fermentation-derived products that contribute to the aroma of red and white wine. We developed a multi-component method based on headspace solid-phase microextraction coupled with gas chromatography mass spectrometry (HS-SPME-GC-MS).
Siebert, T. +8 more
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Rapid Contamination Detection in Validamycin A Production by HS-SPME/GC-MS
Current Biochemical Engineering, 2020Background: Validamycin A (Val-A) is one of the most widely used agricultural antibiotics in East Asia especially for controlling rice sheath blight disease. Fermentation contamination of the industrial Val-A producing strain is a common occurrence. Methods: Fermentation culture of S.
Xiao-Mei Yu +3 more
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Determination of Volatile Nitrosamines in Latex Products by HS-SPME–GC–MS
Chromatographia, 2011Nitrosamines which have been detected in various latex products are carcinogens. The method for determination of volatile nitrosamines in latex products was developed using a combination of headspace solid phase micro-extraction (HS-SPME) and gas chromatography–mass spectrometry (GC–MS).
Di Feng +4 more
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Study of Volatiles in Lysimachia parvifolia Flower Using HS-SPME-GC-MS
Chemistry of Natural Compounds, 2014Lysimachia parvifolia Hemsl. belongs to the Primulaceae family and is widely distributed in Yunnan, Guizhou, Hunan, Jiangxi, and Zhejiang Provinces in China. It is used as traditional chinese medicine to promote blood circulation clear away heat and toxic material, to relieve cough and asthma, to promote diuresis, and to expel stone [1].
Bao-cheng Yang, Zhen-hua Yin, Wenyi Kang
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Characterization of the aroma profile of edible flowers using HS-SPME/GC-MS and chemometrics.
Food Research InternationalIn recent years the consumption of edible flowers has gained new popularity, and their use seems destined to grow thanks to their potential as functional elements and their ability to impart aroma to traditional foods. In this study, the volatile profile
V. Giannetti +4 more
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HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products
Journal of Pharmaceutical and Biomedical Analysis, 2020N-nitrosodimethylamine (NDMA) is a carcinogenic contaminant that was accidentally discovered in drugs, such as valsartan and ranitidine, and more recently in metformin. Liquid chromatography tandem mass spectrometry (LC-MS/MS) is the method typically used for the analysis of NDMA in ranitidine.
Yahya M. Alshehri +2 more
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Simple determination of formaldehyde in fermented foods by HS‐SPME‐GC/MS
International Journal of Food Science & Technology, 2011SummaryWe describe an automatic method to detect formaldehyde (FA) in some fermented foods. This method is based on derivatisation with 2,2,2‐trifluoroethylhydrazine (TFEH) and consecutive headspace solid‐phase micro‐extraction and gas chromatography‐mass spectrometry.
Ho‐Sang Shin, Hyun‐Hee Lim
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Determination of Residual Dimethyl Sulfate in Cephalosporin Using HS-SPME/GC–MS
Journal of Chromatographic ScienceAbstract Dimethyl sulfate (DMS) is widely used in manufacturing process but because of its genotoxicity nature, it should be monitored at trace levels (1 μg/mL). It is complicated and difficult to quantify DMS in cephalosporin with traditional method.
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