The extraction purification process is currently being intensively studied and has a great future as an alternative method of petroleum fractions. point that the development technology rise in consumption fuels oils calls for tightening requirements to their quality characteristics. At same time, special attention paid content aromatic hydrocarbons, sulfur-containing resinous compounds composit...

Insight into the composition of middle distillates is essential to meet requirements for product quality but also in terms complying with ever more stringent environmental regulations. A newly introduced vacuum ultraviolet absorbance detector (VUV) possesses both quantitative and qualitative abilities amenable hyphenation comprehensive two-dimensional gas chromatography (GC×GC). It has good sel...

The fruity odours of wine are largely derived from the synthesis of esters and higher alcohols during yeast fermentation. The ATF1- and ATF2-encoded alcohol acetyltransferases of S. cerevisiae are responsible for the synthesis of ethyl acetate and isoamyl acetate esters, while the EHT1-encoded ethanol hexanoyl transferase is responsible for synthesizing ethyl caproate. However, esters such as t...

A research program on combustion performance evaluation of Canadian middle distillates was carried out at the Combustion and Carbonization Research Laboratory. The program was initiated in response to the needs of the oil industry as well as the standard writing bodies for better fuel quality specifications. The combined effects of industry's effort to maximize the product yield from a crude ba...

During the last stage of plant oil refining, deodorization distillates containing very important biological substances such as tocopherols, sterols, terpenoids or hydrocarbons are formed as a by-products. This study aimed at evaluating the content and antioxidant capacity of tocopherol concentrates from deodorization distillates obtained after the refining of rapeseed, soybean and sunflower oil...

Tóthová J., Sádecká J., Májek P. (2007): Total luminescence spectroscopy for differentiating between brandies and wine distillates. Czech J. Food Sci., 27: 425–432. In this study, the differentiation was investigated between brandy and wine distillate samples by fluorescence spectroscopy in combination with multivariate analysis. The samples corresponding to eight brandies from three producers ...

The paper presents the application of an electronic nose instrument to fast evaluation of agricultural distillates differing in quality. The investigations were carried out using a prototype of electronic nose equipped with a set of six semiconductor sensors by FIGARO Co., an electronic circuit converting signal into digital form and a set of thermostats able to provide gradient temperature cha...

The aim of this study was to evaluate the influence of different starch liberation and saccharification methods on microbiological contamination of distillery mashes. Moreover, the effect of hop α-acid preparation for protection against microbial infections was assessed. The quality of agricultural distillates was also evaluated. When applying the pressureless liberation of starch (PLS) and mal...

Mature skim milk cultures of Streptococcus lactis var. maltigenes were steam distilled at low temperature under reduced pressure. Ethyl ether extracts were prepared from the distillates and analyzed by gas-liquid chromatography and mass spectrometry. Twenty of 31 components detected in the culture distillates were identified positively and 11 tentatively, whereas 10 of 19 components detected in...

Oil-derived middle distillates (straight-run gas oil and mixture with light cycle coker oil) for Ultra-Low Sulfur Diesel (ULSD) production by HyDroTreating (HDT) were pretreated selective Nitrogen Organic Compounds (NOC) adsorption. Highly crystalline Metal-Organic Framework (MOF) MIL-101(Cr) prepared propylene oxide (proton scavenger) as textural improver was used to that end. MOF characterize...