Flavor and chiral stability of lemon-flavored hard tea during storage

He, Fei; Qian, Yanping; Qian, Michael C.

doi:10.1016/j.foodchem.2017.06.136

Cited by 47 publications

(38 citation statements)

References 31 publications

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“…In this study, authors found the presence of (−)-linalool, (−)-borneol and (+)-limonene concluding that these compounds could be useful to assess origin and authenticity of the product [64]. A more advanced analytical technique, namely two dimensional-GC-MS(2D-GC-MS) has been applied to the analysis of chiral compounds present in tea samples [66]. The study aimed to investigate the chiral stability of lemon-flavored hard tea during storage.…”

Section: Some Selected Applications To Enantiomers Separation In Fmentioning

confidence: 99%

Analysis of Enantiomers in Products of Food Interest

et al. 2019

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The separation of enantiomers has been started in the past and continues to be a topic of great interest in various fields of research, mainly because these compounds could be involved in biological processes such as, for example, those related to human health. Great attention has been devoted to studies for the analysis of enantiomers present in food products in order to assess authenticity and safety. The separation of these compounds can be carried out utilizing analytical techniques such as gas chromatography, high-performance liquid chromatography, supercritical fluid chromatography, and other methods. The separation is performed mainly employing chromatographic columns containing particles modified with chiral selectors (CS). Among the CS used, modified polysaccharides, glycopeptide antibiotics, and cyclodextrins are currently applied.

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Section: Some Selected Applications To Enantiomers Separation In Fmentioning

confidence: 99%

Analysis of Enantiomers in Products of Food Interest

et al. 2019

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“…Flavours and odours are among the main quality markers of these products—such as natural flavoured water products—usually composed of complex flavour extracts. Thus, several works applied GC×GC and MDGC techniques to assess the composition of non-alcoholic drinks (e.g., teas [63,64,65,66,67] and coffee [9,68,69,70,71,72,73]), as well as alcoholic beverages (e.g., wine [8,9,15,69,74,75,76,77,78,79], brandy [74], beer [68,80,81,82] and hop [83,84,85], cider [86], vodka [87], whiskey [14,74], cachaça [88] and spirits [74,89]).…”

Section: Drinks and Beveragesmentioning

confidence: 99%

The Blossoming of Technology for the Analysis of Complex Aroma Bouquets—A Review on Flavour and Odorant Multidimensional and Comprehensive Gas Chromatography Applications

Amaral

Marriott

2019

Molecules

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Multidimensional approaches in gas chromatography have been established as potent tools to (almost) attain fully resolved analyses. Flavours and odours are important application fields for these techniques since they include complex matrices, and are of interest for both scientific study and to consumers. This article is a review of the main research studies in the above theme, discussing the achievements and challenges that demonstrate a maturing of analytical separation technology.

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“…Chirality is a major concern in the modern pharmaceutical industry, pesticides, flavors, food additives, nonlinear optical materials, and asymmetric reactions and catalysis . Therefore, chiral recognition/resolution is of great interest and accordingly, large efforts have been paid to the techniques suitable for this aim, for example, chromatography, membrane separation, enzyme resolution, and chemical recognition .…”

Section: Introductionmentioning

confidence: 99%

Chiral phosphoric triamide‐based polymers for enantioseparation

Ahmadabad

Pourayoubi

Bakhshi

2019

J of Applied Polymer Sci

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Novel optical isomers of phosphoramide-methacrylate monomers were synthesized and used for the preparation of corresponding polymers and hydrogels as chiral absorbents. In order to direct enantioseparation, two simple and inexpensive methods were designed: (a) immobilization of the chiral polymers on glass beads as packing material for the separation columns and (b) filling of chiral hydrogels in tea bags to fabricate separation bags. The specific rotations for R-and S-monomers were + 22.0 and − 21.8 , while those for R-and S-polymers were + 20.8 and − 22.1 , respectively. The enantioseparation of (AE)-α-methylbenzylamine, DL-alanine, DL-valine, DL-tartaric acid, DL-phenylalanine, and omeprazole was evaluated. The maximum enantioseparation (optical purity) of 97% was observed for (AE)-α-methylbenzylamine by S-hydrogel. Chiral hydrogels resulted in enantioseparations with higher purities (up to 97%) comparing to the chiral polymers, but in longer times (2-3 days). The desorption process easily occurred from the absorbed columns or bags.Phosphoramides with a P( O)(N) segment are attractive to study owing to their extensive applications in the coordination chemistry, catalysts, and medicine. [32][33][34] From our previous studies on phosphorus-oxygen, phosphorus-nitrogen, and phosphorus-sulfur compounds, 35-37 the P O group was found as the best hydrogen-bond acceptor with respect to the other possible acceptor groups, which usually exist in the molecules, typically C O, S O, N─O, P S, ester and ether oxygen atoms, nitrogen, and π-system, examined with X-ray diffraction study, statistical analysis based on the data deposited in the Cambridge structural database (CSD) 38 and quantum chemical calculations in some cases. The structures investigated include achiral, racemate, and chiral single-enantiomer phosphorus compounds. 36,37,39,40 According to Reaxys web-based tool (licensed by Elsevier) for chiral polymers, there is no report about an enantiomeric pair of phosphoric triamide-based polymers, and such polymers seem to be good chiral selectors, due to relatively strong interaction of P O with OH and NH units, as was observed in small molecules model compounds.In this work, levo-and dextro-rotatory isomers with two chiral centers, P( O)(NH-R-(−)CH(CH 3 )C 6 H 5 ) 2 (Cl) and P( O)(NH-S-(−)CH(CH 3 )C 6 H 5 ) 2 (Cl) (1 and 2), have been synthesized and reacted with 2-aminoethylmethacrylate (AEMA) to prepare phosphoric triamides monomers (3 and 4) as chiral selectors. The methacrylate moiety brought the opportunity for the radical or ionic polymerization reactions of these monomers. Through radical polymerization of these novel monomers, a pair of singleenantiomer phosphoric triamide-based polymers (P1 and P2) and hydrogels (H1 and H2) were prepared. In order to direct Additional Supporting Information may be found in the online version of this article.

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Flavor and chiral stability of lemon-flavored hard tea during storage

Cited by 47 publications

References 31 publications

Analysis of Enantiomers in Products of Food Interest

Analysis of Enantiomers in Products of Food Interest

The Blossoming of Technology for the Analysis of Complex Aroma Bouquets—A Review on Flavour and Odorant Multidimensional and Comprehensive Gas Chromatography Applications

Chiral phosphoric triamide‐based polymers for enantioseparation

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