منابع مشابه
Tandem Gas Chromatography - Mass Spectrometry Analysis of Volatiles From Soybean Oil
A time vs. volatile decomposition studY was made on commercially available soYbean oil aaed d • '" un er normal laboratory room conditions. Samples were taken at weekly intervals for peroxide v.alue (PV) determinations, organoleptic evaluatIOns and volatile analyses. Volatiles, stripped from the oil samples in an all-glass system devoid of connecting joints, were collected and sealed in attache...
متن کاملDiscrimination of mango fruit maturity by volatiles using the electronic nose and gas chromatography
Mango fruit (Mangifera indica L.), cv. ‘Cogshall’, ‘Kent’ and ‘Keitt’ were harvested at different maturities (61–115 d past flowering and 0–307 average g fresh weight for ‘Cogshall’) and at different sizes (364–1563 and 276–894 average g fresh weight for ‘Keitt’ and ‘Kent’, respecively). Immediately after harvest (green) or after 1 week of ripening at room temperature (ripe), fruit were homogen...
متن کاملIdentification of volatiles by headspace gas chromatography with simultaneous flame ionization and mass spectrometric detection.
Volatiles are frequently abused as inhalants. The methods used for identification are generally nonspecific if analyzed concurrently with ethanol or require an additional analytical procedure that employs mass spectrometry. A previously published technique utilizing a capillary flow technology splitter to simultaneously quantitate and confirm ethyl alcohol by flame ionization and mass spectrome...
متن کاملDetermination of Volatiles in Beer using Solid-Phase Microextraction in Combination with Gas Chromatography/Mass Spectrometry
Kleinová J., Klejdus B. (2014): Determination of volatiles in beer using solid-phase microextraction in combination with gas chromatography/mass spectrometry. Czech J: Food Sci., 32: 241–248. 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 liquid ...
متن کاملAnalysis of Rhioxma Curcumae Aeruginosae volatiles by solid-phase microextraction with gas chromatography-mass spectrometry.
In this paper, a headspace solid-phase microextraction (HS-SPME) method was applied to analyse the volatile compounds in a traditional Chinese medicine (TCM), Rhioxma Curcumae Aeruginosae. SPME parameters such as fibers, extraction temperature, extraction time and desorption time were investigated. Thirty-five volatile compounds were separated and identified. Relative standard deviations (RSDs)...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1964
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(64)88645-8