Thermal decomposition study of menthyl-glycoside by TGA/SDTA, DSC and simultaneous Py-GC–MS analysis

Xie, Wancui; Tang, Jiong; Gu, Xiaohong; Chang-rong, Luo; Wang, Guangyu

doi:10.1016/j.jaap.2006.06.007

Cited by 37 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A variety of non-volatile glycosides have been identified in tobacco since the 1980s [1][2][3][4][5][6][7]. These glycosidically bound constituents are not easily volatilized during processing and storing, but are pyrolyzed into free aromatic components when the tobacco is burning, contributing to the flavor of cigarettes [8]. It is well established that glycosides are among the most important aroma precursors in tobacco [9].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous quantitative assessment of nine glycosides in tobacco by liquid chromatography–tandem mass spectrometry

Yuan

Zhou

et al. 2017

J of Separation Science

View full text Add to dashboard Cite

A simple and efficient method combining ultrasound-assisted extraction, the conditions of which were optimized by response surface methodology, with liquid chromatography and tandem mass spectrometry was established and validated for the absolute quantification of nine non-volatile neutral glycosides originating from tobacco (Nicotiana tobaccum L.) leaves, comprising three phenolic glycosides, one benzanoid glycoside, and five sesquiterpene glycosides within three isomers, originating from tobacco leaves. Factors of extraction time, sample quantity, extraction solvent, liquid chromatographic conditions, and electrospray ionization parameters were carefully investigated to ensure the selectivity and sensitivity of the method. All calibration curves showed excellent coefficients of determination ranging from 0.9940 to 0.9996, within the range of tested concentrations. The limits of detection and quantification were 2.33-25.9 and 7.06-78.5 ng/mL, respectively. Satisfactory values of accuracy were between 80.1 to 107.9% among different sample matrixes. The relative standard deviations of intra- and inter-day analysis were less than 13.7 and 13.0% respectively. The developed method was successfully applied in a pilot study to determine the amounts of the nine endogenous glycosides in real flue-cured tobacco samples obtained from different habitats in China.

show abstract

Section: Introductionmentioning

confidence: 99%

Simultaneous quantitative assessment of nine glycosides in tobacco by liquid chromatography–tandem mass spectrometry

Yuan

Zhou

et al. 2017

J of Separation Science

View full text Add to dashboard Cite

show abstract

“…The major pyrolysis products for menth- There were seldom pyrolysis intermediates and radicals identified. 14 As a comparison with PIMS method, the pyrolysis results of BGLU produced by Py-GC-MS under high temperature was also obtained in our study. Fig.…”

Section: Possible Pyrolysis Mechanism Of Bglumentioning

confidence: 63%

“…12,13 The thermolysis study of this compound had been rarely reported. Until recently, Wancui Xie et al 14 studied the thermal decomposition of menthyl-glycoside by pyrolysis-gas chromatography-mass spectroscopy (Py-GC-MS) analysis.…”

Section: Introductionmentioning

confidence: 99%

Photoionization Mass Spectrometry: A Useful Method to Evaluate the Pyrolysis Process of Glycoside Flavor Precursor

Ding¹,

Cai²,

Qi³

et al. 2011

J Chinese Chemical Soc

View full text Add to dashboard Cite

The thermal decomposition behavior and the pyrolysis products of benzyl-2,3,4,6-tetra-O-acetyl-b-D-glucopyranoside (BGLU) were studied with synchrotron vacuum ultraviolet (VUV) photoionization mass spectrometry at temperatures of 300, 500 and 700°C at 0.062 Pa. Several pyrolysis products and intermediates were identified by the measurement of photoionization mass spectra at different photon energies. The results indicated that the primary decomposition reaction was the cleavage of O-glycosidic bond of the glycoside at low temperature, proven by the discoveries of benzyloxy radical (m/z = 107) and glycon radical (m/z = 331) in mass spectra. As pyrolysis temperature increased from 300 to 700°C, two possible pyrolytic modes were observed. This work reported an application of synchrotron VUV photoionization mass spectrometry in the study of the thermal decomposition of glycoside flavor precursor, which was expected to help understand the thermal decomposition mechanism of this type of compound. The possibility of this glycoside to be used as a flavor precursor in high temperature process was evaluated.

show abstract

“…Synthesis of CGLY. Figure 1 shows the synthesis of CGLY by modified Koenigs-Knorr reaction [7] with Ag 2 CO 3 -SiO 2 as the catalyst. As shown, a SN 2 nucleophilic substitution reaction occurred.…”

Section: Introductionmentioning

confidence: 99%

Thermal Decomposition Kinetics Analysis of Citronellol- -D-glucopyranoside

Xie¹,

Yin²,

Yang³

et al. 2016

Proceedings of the 2016 5th International Conference on Sustainable Energy and Environment Engineering (ICSEEE 2016)

View full text Add to dashboard Cite

DTA/SDTG and DSC techniques were used to study the thermal behaviors of citronellol-β-D-glucopyranoside (CGLY) . The heating rate was 5, 7.5, 10, and 12.5 K▪min -1 , the samples were heated from 30 o C to 500 o C. Methods of Friedman and Flynn-Wall-Ozawa were applied to calculate the parameters of thermal degradation, the parameters were substituted to the methods of Coats-Redfern and Phadnis-Deshpande to estimated degradation mechanism. The TG-DTG curves showed that with the increased heating rate, the mass of starting loss T0, the biggest rate of mass loss Tp and final mass loss T f met the functions respectively: T 0 =3.8825B+194.97, Tp=2.2825B+281.47, Tf=5.5825B+305.72. The DSC curve showed that melting and decomposition proceeded at sametime. By Friedman and Flynn-Wall-Ozawa, thermal degradation of the apparent activation energy Ea are obtained, which are 133.15 KJ/mol, 126.62KJ/mol respectively, and the correlation was related.

show abstract

Thermal decomposition study of menthyl-glycoside by TGA/SDTA, DSC and simultaneous Py-GC–MS analysis

Cited by 37 publications

References 10 publications

Simultaneous quantitative assessment of nine glycosides in tobacco by liquid chromatography–tandem mass spectrometry

Simultaneous quantitative assessment of nine glycosides in tobacco by liquid chromatography–tandem mass spectrometry

Photoionization Mass Spectrometry: A Useful Method to Evaluate the Pyrolysis Process of Glycoside Flavor Precursor

Thermal Decomposition Kinetics Analysis of Citronellol- -D-glucopyranoside

Contact Info

Product

Resources

About