Chemical Differentiation of Sugarcane Cultivars Based on Volatile Profile and Chemometric Analysis was written by Silva, Pedro;Freitas, Jorge;Nunes, Fernando M.;Camara, Jose S.. And the article was included in Journal of Agricultural and Food Chemistry in 2021.Name: Pyridin-4-ol This article mentions the following:
Sugarcane (SC) is a perennial grass widely cultivated in tropical and subtropical regions. However, its cultivation in Europe is residual, where Madeira Island, Portugal, is the only region where SC continues to be extensively cultivated. For the first time, the volatile profiles of regional cultivars were established by solid-phase microextraction combined with gas chromatog.-mass spectrometry. Different volatile profiles for each cultivar were recognized, identifying 260 volatile organic compounds belonging to 15 chem. classes, such as aldehydes, alcs., ketones, hydrocarbons, esters, and terpenes. Chemometric anal. procedure, namely, one-way ANOVA with Tukey’s test, principal component anal., partial least-square anal., linear discriminant anal., and hierarchical clustering anal., allowed the differentiation between all regional cultivars. This study represents an important contribution for the maintenance of biodiversity and subsistence of the SC industry in Europe. Furthermore, it is also a valuable contribution to establish the typicality of traditional SC-based products, such as SC honey. In the experiment, the researchers used many compounds, for example, Pyridin-4-ol (cas: 626-64-2Name: Pyridin-4-ol).
Pyridin-4-ol (cas: 626-64-2) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Name: Pyridin-4-ol