The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

Jacek Lipok - One of the best experts on this subject based on the ideXlab platform.

  • Metabolic relation of cyanobacteria to Aromatic Compounds
    Applied Microbiology and Biotechnology, 2019
    Co-Authors: Beata Żyszka-haberecht, Emilia Niemczyk, Jacek Lipok
    Abstract:

    Cyanobacteria, also known as blue-green (micro)algae, are able to sustain many types of chemical stress because of metabolic adaptations that allow them to survive and successfully compete in a variety of ecosystems, including polluted ones. As photoautotrophic bacteria, these microorganisms synthesize Aromatic amino acids, which are precursors for a large variety of substances that contain Aromatic ring(s) and that are naturally formed in the cells of these organisms. Hence, the transformation of Aromatic secondary metabolites by cyanobacteria is the result of the possession of a suitable “enzymatic apparatus” to carry out the biosynthesis of these Compounds according to cellular requirements. Another crucial aspect that should be evaluated using varied criteria is the response of cyanobacteria to the presence of extracellular Aromatic Compounds. Some aspects of the relationship between Aromatic Compounds and cyanobacteria such as the biosynthesis of Aromatic Compounds, the influence of Aromatic Compounds on these organisms and the fate of Aromatic substances inside microalgal cells are presented in this paper. The search for this information has suggested that there is a lack of knowledge about the regulation of the biosynthesis of Aromatic substances and about the transport of these Compounds into cyanobacterial cells. These aspects are of pivotal importance with regard to the biotransformation of Aromatic Compounds and understanding them may be the goals of future research.

Douglas W. Later - One of the best experts on this subject based on the ideXlab platform.

  • Linear retention index system for polycyclic Aromatic Compounds
    Journal of Chromatography A, 2002
    Co-Authors: Daniel L. Vassilaros, R.c. Kong, Douglas W. Later
    Abstract:

    Abstract A linear retention index system for temperature-programmed capillary gas chromatography of polycyclic Aromatic Compounds using naphthalene, phenanthrene, chrysene, and picene as internal standards has been used in this laboratory for routine analysis since 1979. Conclusions from a data set of 29 routine capillary gas chromatographic analyses of a complex mixture of polycyclic Aromatic Compounds are used to evaluate, describe, and justify the polycyclic Aromatic compound retention index system. The number, width, and linearity of the interpolation intervals are described. The effects on the retention indices of variations in programming rate, column internal diameter, and initial temperature are discussed. The polycyclic Aromatic compound retention index system is shown to be a consistent, useful tool for preliminary identification of polycyclic Aromatic Compounds in complex mixtures. Tables listing standard retention indices for polycyclic Aromatic hydrocarbons, polycyclic Aromatic sulfur heterocycles, and nitrogen-containing polycyclic Aromatic Compounds are included.

Zekai Tarakci - One of the best experts on this subject based on the ideXlab platform.

  • Composition of volatile Aromatic Compounds and minerals of tarhana enriched with cherry laurel (Laurocerasus officinalis)
    Journal of Food Science and Technology, 2017
    Co-Authors: Hasan Temiz, Zekai Tarakci
    Abstract:

    Different concentrations of cherry laurel pulp (0, 5, 10, 15 and 20%) were used to produce tarhana samples. Volatile Aromatic Compounds and minor mineral content were investigated. Volatile Aromatic Compounds were analyzed by using GC–MS with SPME fiber and minor mineral values were evaluated with inductively coupled plasma optical emission spectrometer. The statistical analysis showed that addition of pulp affected volatile Aromatic Compounds and minor mineral content significantly. Thirty five volatile Aromatic Compounds were found in tarhana samples. The octanoic acid from acids, benzaldehyde (CAS) phenylmethanal from aldehydes, 6-methyl-5-hepten-2-one from ketones, octadecane (CAS) n -octadecane form terpenes, ethyl caprylate from esters and benzenemethanol (CAS) benzyl alcohol from alcohols had the highest percentage of volatile Aromatic Compounds. Tarhana samples were rich source of Mn, Cu and Fe content.

R.a. Lewis - One of the best experts on this subject based on the ideXlab platform.

  • Terahertz Spectroscopy of Biochars and Related Aromatic Compounds
    Journal of Infrared Millimeter and Terahertz Waves, 2016
    Co-Authors: L. M. Lepodise, Jelena Horvat, R.a. Lewis
    Abstract:

    A recent application of terahertz spectroscopy is to biochar, the agricultural charcoal produced by pyrolysis of various organic materials. Biochars simultaneously improve soil fertility and assist in carbon sequestration. Terahertz spectroscopy allows different biochars to be distinguished. However, the origin of the absorption features observed has not been clear. Given that biochar-based fertilizers are rich in Aromatic Compounds, we have investigated simple Aromatic Compounds as an approach to unravelling the complex biochar spectrum.

Douglas A. Klumpp - One of the best experts on this subject based on the ideXlab platform.