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Wei Sheng Yan Jiu. 2014 Jan;43(1):116-20.

[Identification of benzoic acid, sorbic aicid and dehydroacetic acid residues in alcoholic drinks and beverages].

[Article in Chinese]

Author information

1
Medical School, Ningbo University, Ningbo 315211, China. zhuhao@163.com
2
Medical School, Ningbo University, Ningbo 315211, China.

Abstract

OBJECTIVE:

To establish a qualitative system for the identification of benzoic acid, sorbic acid and dehydroacetic acid residues in alcoholic drinks and beverages by ultra-fast liquid chromatography coupled with electrospray ionization tandem mass spectrometry (UFLC/ESI-MS/MS).

METHODS:

After the sample was extracted, the separation was performed by UFLC and the cracking was used by the optimized ESI-MS/ MS conditions. Confirmatory detection was carried out by the principle of three qualitative ions and retention time using an UFLC-MS/MS in the negative electrospray ionization mode.

RESULTS:

The MS/MS fragment ions were reliable and steady under the suitable conditions, the cracking ways to the parent ions and fragment ions were clear. Qualitative ion pairs were m/z 121-->77 and m/z 121-->59 for benzoic acid, m/z 111-->67 and m/z 111-->41 for sorbic acid, m/z 167-->83 and m/z 167-->123 for dehydroacetic acid. The limits of quantitation (LOQs) were 0.02, 0.05 and 0.02 mg/L for benzoic acid, sorbic acid and dehydroacetic acid, respectively.

CONCLUSION:

The established method was rapid, accurate and sensitive, it is suitable for confirmation for benzoic acid, sorbic acid and dehydroacetic acid residues in alcoholic drinks and beverages.

PMID:
24564123
[Indexed for MEDLINE]
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