Untargeted volatile metabolomics using comprehensive two-dimensional gas chromatography-mass spectrometry – A solution for orange juice authentication was written by Li, Shujing;Hu, Yaxi;Liu, Wei;Chen, Ying;Wang, Fei;Lu, Xiaonan;Zheng, Wenjie. And the article was included in Talanta in 2020.Product Details of 112-14-1 The following contents are mentioned in the article:
Orange juice is one of the most consumed fruit juices worldwide and its adulteration has been a long-lasting concern. In this study, an untargeted volatile metabolomics using a comprehensive two-dimensional gas chromatog.-quadrupole mass spectrometry (GC x GC-qMS) was developed to systematically authenticate orange juice. At least 405 citrus whole fruits were collected, belongs to 58 types of orange samples and 23 types of non-orange citrus. The fruit juices were prepared in the laboratory and analyzed using the comprehensive GC x GC-qMS instrument. After optimizing the instrumental settings, this novel method was able to identified 鈭?50 volatiles in each juice sample, covering a variety types of hydrocarbons, esters, alcs., aldehydes, ketones and others. Combining with unsupervised principal component anal. and supervised partial least squares-discriminant anal. , this novel anal. tool was able to authenticate orange juice from a broad perspectives with a high accuracy in the cross-validation model: 1) differentiating orange juice from non-orange citrus juice (99% accuracy), 2) recognizing orange harvesting years (100% accuracy) and geog. origins (96% accuracy), and 3) distinguishing original pure orange juice from the reconstituted juice (94% accuracy). Key volatile metabolites associated with different categories of samples were also identified after thorough investigation of the loading values of the classification models. These metabolites have high potential to be used as food-markers to design targeted anal. methods for orange juice authentication. This novel comprehensive GC x GC-qMS-based method is ideal for governmental laboratories and the food industry to routinely authenticate orange juice. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Product Details of 112-14-1).
Octyl acetate (cas: 112-14-1) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Product Details of 112-14-1
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics