Identification Of Main Compounds Research Articles

A review: role of mass spectrometry in the quality and authenticity identification of olive oil

SummaryQuality and authenticity identification of olive oil is a vital issue for the olive oil industry on account of its great economic value, unique sensory characteristics, and rich nutritional value. Therefore, it is of great significance to effectively detect olive oil's quality and authenticity. Mass spectrometry, based on the advantages of specificity, sensitivity, and fast analysis speed, has played an increasingly important role in the identification of olive oil quality and authenticity in recent years. Chromatography tandem–mass spectrometry (LC–MS, GC–MS) and direct mass spectrometry (DIMS, DART, MALDI, and PTR‐MS) techniques provide rich detection information in the identification of main compounds (fatty acids, triacylglycerols, etc.) and minor compounds (phenols, sterols, tocopherols, diacylglycerols, etc.) in olive oil. And these techniques are widely applied in whole oils analysis and characteristic compounds identification in olive oil. The literature results show that the combination of mass spectrometry data and chemometrics has made a significant contribution to determining the geographical traceability, adulteration identification, and grade classification of olive oil. This review aims to provide a certain reference for mass spectrometry techniques in the identification of olive oil quality and authenticity, and forecasts the development prospects.

Ultrasound-Assisted Extraction of Bioactive Compounds from Annatto Seeds, Evaluation of Their Antimicrobial and Antioxidant Activity, and Identification of Main Compounds by LC/ESI-MS Analysis.

This study evaluated the antimicrobial activity (i.e., against Bacillus cereus and Staphylococcus aureus) and the antioxidant activity (i.e., ABTS, FRAP, and DPPH) of annatto seeds extract obtained by ultrasound-assisted extraction. A response surface design with three levels such as pH (2-11), solvent concentration (50-96 %), seed-to-solvent ratio (1:2–1:10), and treatment time (0-30 min) was employed to determine the optimal experimental conditions. Thus, a pH of 7.0, seed-to-solvent ratio of 1:7, and treatment time of 20 min were selected as optimal rendering an extract having a 0.62% of bixin, 3.81 mg gallic acid/mg equivalent of polyphenol compounds (ABTS 1035.7, FRAP 424.7, and DPPH 1161.5 μM trolox/L), and a minimal inhibitory concentration against Bacillus cereus and Staphylococcus aureus of 32 and 16 mg/L, respectively. Further, the main bioactive compounds identified by LC/ESI-MS were bixin and catechin, chlorogenic acid, chrysin, butein, hypolaetin, licochalcone A, and xanthohumol.

Isolation and Identification of Main Compounds of Lagochilus cabulicus

Isolation and Identification of Main Compounds of Lagochilus cabulicus