Observation of allicin‐cysteine complex by reactive desorption electrospray ionization mass spectrometry for garlic

Zhou, Jing; Yao, Shengjun; Qiu, Rong; Xu, Zhe; Wei, Yuanlong; Guo, Yinlong

doi:10.1002/rcm.3730

Cited by 18 publications

(13 citation statements)

References 41 publications

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“…In the EPI scan, two product ions at m/z 73(100%) and 95(25%) were formed at collision energy (CE) of 10 eV. The MS/MS spectrum was in agreement with the reported mass spectrum (Block et al, 1992;Zhou et al, 2008) and thus it was structurally significant to identify it as that of AMThs (Fig. 1).…”

Section: Isolation Identification and Confirmation Of Allyl Thiosulpsupporting

confidence: 71%

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Evaluation of garlic ecotypes for allicin and other allyl thiosulphinates

et al. 2011

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Section: Isolation Identification and Confirmation Of Allyl Thiosulpsupporting

confidence: 71%

“…The mass spectrum was also in a perfect agreement with the reference standard of allicin and with the literature (Block et al, 1992;Zhou et al, 2008). The ionisation of the fraction for peak C gave a molecular ion at m/z 163, similar to that of allicin.…”

Section: Isolation Identification and Confirmation Of Allyl Thiosulpmentioning

confidence: 90%

Evaluation of garlic ecotypes for allicin and other allyl thiosulphinates

et al. 2011

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“…6, and attention is The potential value of this type of study can be seen by considering the DESI-MS spectrum of a tissue section which shows no signal for cholesterol using methanol/water spray reagent, but a strong signal for the cholesterol derivative when betaine aldehyde is included as a reagent in the spray solvent. 30 As opposed to simple cationization 31 or anion addition, 32 redox reactions, 33 host-guest complex formation [34][35][36] and chemical bond-forming reactions 30,[37][38][39][40] have gained increasing attention in reactive DESI experiments since they are analogous to ordinary solution-phase functional group reactions. Other reaction types are also of interest in ambient ionization.…”

Section: Chemical Reactions Reactive Desimentioning

confidence: 99%

Desorption electrospray ionization and other ambient ionization methods: current progress and preview

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Ouyang

et al. 2010

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Mass spectrometry allows rapid chemical analysis of untreated samples in the ambient environment. This is a result of recent rapid progress in ambient ionization techniques. The most widely studied of these new methods, desorption electrospray ionization (DESI), uses fast-moving solvent droplets to extract analytes from surfaces and propel the resulting secondary microdroplets towards the mass analyzer. This review of DESI and other ambient methods centers on the accompanying chemical processes. Manipulation of the chemistry accompanying ambient ionization can be used to optimize chemical analysis, including molecular imaging. Solvent effects, geometry effects, electrochemical processes and mechanisms are covered. Extensions of the methodology to solution-phase analysis, to stand-off detection and to therapeutic drug analysis using miniature mass spectrometers are also treated.

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“…In addition, peaks at 137 and 155 were found to be due to the presence of [allyl methyl thiosulfinate + H] + and [allyl methyl thiosulfinate + NH 4 ] + respectively. 19 Also the appearance of a peak at 147 could be attributed to the presence of protonated diallyl disulphide, a well known stable antioxidant compound found in garlic. However, the base peak appearing at 175 could be due to arginine.…”

Section: Discussionmentioning

confidence: 99%