نتایج جستجو برای: volatile sulphur compounds
تعداد نتایج: 259236 فیلتر نتایج به سال:
Reducing emissions of various air pollutants is needed to achieve cleaner and healthier quality in all EU countries. The National Air Pollution Reduction Programme sets out pollution reduction targets 55% for particulate matter (PM), 73% sulphur dioxide, 58% non-methane volatile organic compounds 66 % nitrogen oxides, among other pollutants, by 2030 compared the 2005 reference year. household s...
Plants form volatile oxylipins and related compounds under stress. Some of them are important flavor chemicals and give big impact on the flavor quality of food made from plant materials. They are also involved in defense responses of plants against pathogens and herbivores. Furthermore, in some instances, they cause harmful effects on plants themselves. Because of these significances of volati...
The volatile compounds in proso millet wine were extracted by headspace solid-phase microextraction (85 μm polyacrylate (PA), 100 μm polydimethylsiloxane (PDMS), 75 μm Carboxen (CAR)/PDMS, and 50/30 μm divinylbenzene (DVB)/CAR/PDMS fibers), and analyzed using gas chromatography-mass spectrometry; the odor characteristics and intensities were analyzed by the odor activity value (OAV). Different ...
Pollination contributes to an estimated one third of global food production, through both the improvement of the yield and the quality of crops. Volatile compounds emitted by crop flowers mediate plant-pollinator interactions, but differences between crop varieties are still little explored. We investigated whether the visitation of crop flowers is determined by variety-specific flower volatile...
A patient who made reproduction antique china dolls complained that wherever she touched the dolls' heads when painting them, black speckles appeared after the subsequent firing. Investigation by means of mass spectrometry and X-ray fluorescence showed that the clay was rich in iron, that the patient's sweat contained volatile sulphides whenever she ate garlic, and that the speckles consisted o...
The utilization of several inorganic and organic sulphur compounds by three strains of Clostridium perfringens and the production of hydrogen sulphide from these compounds was investigated. Sulphate, sulphite, thiosulphate and sulphide cannot supply sulphur to the organism, neither do they have any effect, when added in non-toxic concentrations, on the growth in media containing utilizable orga...
In this study, GC-MS and sensory evaluation were used to analyze the volatile components of fruits 2 white M. rubra purple . Meanwhile, their relationship among each other massion pine ( Pinus massoniana ) detected. The test results showed that, there 60 organic compounds (VOCs) in 8 categories, including aldehydes, acids, ketones, alcohols, esters, phenols, olefins alkanes, found four cultivar...
Genus Origanum is an aromatic plant used in folk medicine and as a culinary herb, whose composition of volatile compounds is influenced by the type of species and geographical locations. This research evaluates the effect of altitude on the composition of volatile compounds and the contents of carvacrol and thymol of Origanum x majoricum Cambess and Origanum majorana L. fi...
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