Rapid prediction of deoxynivalenol contamination in wheat bran by MOS-based electronic nose and characterization of the relevant pattern of volatile compounds was written by Lippolis, Vincenzo;Cervellieri, Salvatore;Damascelli, Anna;Pascale, Michelangelo;Di Gioia, Annalisa;Longobardi, Francesco;De Girolamo, Annalisa. And the article was included in Journal of the Science of Food and Agriculture in 2018.Safety of Methyl heptanoate The following contents are mentioned in the article:
BACKGROUND : Deoxynivalenol (DON) is a mycotoxin, mainly produced by Fusarium sp., most frequently occurring in cereals and cereal-based products. Wheat bran refers to the outer layers of the kernel, which has a high risk of damage due to chem. hazards, including mycotoxins. Rapid methods for DON detection in wheat bran are required. RESULTS : A rapid screening method using an electronic nose (e-nose), based on metal oxide semiconductor sensors, has been developed to distinguish wheat bran samples with different levels of DON contamination. A total of 470 naturally contaminated wheat bran samples were analyzed by e-nose anal. Wheat bran samples were divided in two contamination classes: class A ([DON] ≤ 400 μg kg-1, 225 samples) and class B ([DON] > 400 μg kg-1, 245 samples). Discriminant function anal. (DFA) classified wheat bran samples with good mean recognizability in terms of both calibration (92%) and validation (89%). A pattern of 17 volatile compounds of wheat bran samples that were associated (pos. or neg.) with DON content was also characterized by HS-SPME/GC-MS. CONCLUSIONS : These results indicate that the e-nose method could be a useful tool for high-throughput screening of DON-contaminated wheat bran samples for their classification as acceptable / rejectable at contamination levels close to the EU maximum limit for DON, reducing the number of samples to be analyzed with a confirmatory method. © 2018 Society of Chem. Industry. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Safety of Methyl heptanoate).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Safety of Methyl heptanoate
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