beta-ionone and citral

beta-ionone has been researched along with citral* in 2 studies

Other Studies

2 other study(ies) available for beta-ionone and citral

ArticleYear
Dynamic changes in norisoprenoids and phenylalanine-derived volatiles in off-vine Vidal blanc grape during late harvest.
    Food chemistry, 2019, Aug-15, Volume: 289

    We investigated the dynamic changes in norisoprenoids and phenylalanine derivatives in off-vine Vidal blanc. Glycosidically bound as well as free-form volatile compounds were identified by GC-MS in two vintages. Thus, off-vine grape exhibited the development of four higher alcohols (viz. linalool oxide, 2-octanol, 1-pentanol, and 1-heptanol), C13-norisoprenoids (α-ionone), phenylalanine-derivates (2-phenylethanol), whereas β-ionone and geranial showed high correlation in on-vine grape. Freeze-thaw cycles and desiccation, two exterior stress affect volatile compound development, resulted in content fluctuations during late harvest. Interestingly, the total content of higher alcohols was higher in on-vine grapes than off-vine grapes in two vintages respectively. Interestingly, the content of higher alcohols was higher in off-vine samples in the 2016 and 2017 vintages. In terms of physicochemical parameters, off-vine Vidal showed results similar to those of on-vine sample. Nevertheless, sensorial impression of the grape juice was influenced by interaction of vintages and vine treatments.

    Topics: Acyclic Monoterpenes; Alcohols; Carotenoids; Cluster Analysis; Cyclohexanols; Female; Gas Chromatography-Mass Spectrometry; Heptanol; Humans; Male; Monoterpenes; Norisoprenoids; Octanols; Pentanols; Phenylalanine; Taste; Trityl Compounds; Vitis; Volatile Organic Compounds; Wine

2019
Membrane fluidity changes of liposomes in response to various odorants. Complexity of membrane composition and variety of adsorption sites for odorants.
    Biophysical journal, 1990, Volume: 58, Issue:4

    Three kinds of liposomes prepared from phosphatidylcholine (PC), azolectin, and azolectin-containing membrane proteins of the canine erythrocytes were used as models for olfactory cells. To explore properties of the adsorption sites of odorants, membrane fluidity changes in response to various odorants were measured with various fluorescence dyes which monitor the fluidity at different depths and different regions of the membranes. (a) Application of various odorants changed the membrane fluidity of azolectin liposomes. The patterns of membrane fluidity changes in response to odorants having a similar odor were similar to each other and those in response to odorants having different odors were different from each other. These results suggested that odorants having a similar odor are adsorbed on a similar site and odorants having different odors are adsorbed on different sites. (b) Such variation of the pattern was not seen in liposomes of a simple composition (PC liposome). (c) In the proteoliposomes whose composition was more complex than that of azolectin liposomes, the patterns of membrane fluidity changes varied among odorants having a similar odor. It was concluded that liposomes of complex membrane composition have the variety of adsorption sites for odorants.

    Topics: Acyclic Monoterpenes; Animals; Biophysical Phenomena; Biophysics; Dogs; Erythrocyte Membrane; Fluorescence Polarization; Liposomes; Membrane Fluidity; Membrane Proteins; Monoterpenes; Norisoprenoids; Odorants; Phosphatidylcholines; Phospholipids; Terpenes

1990