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Composition and distribution of alpha-dicarbonyl compounds in propolis from different plant origins and extraction processing

文献类型： 外文期刊

作者： Song, Meijie 1 ; Wang, Kai 1 ; Lu, Huanxian 2 ; Yan, Sha 1 ; Wu, Liming 1 ; Xue, Xiaofeng 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Apicultural Res, Beijing 100093, Peoples R China

2.Yunnan Acad Agr Sci, Sericultural & Apicultural Res Inst, Kunming 661100, Yunnan, Peoples R China

3.Shanxi Agr Univ, Coll Food Sci & Engn, Taigu 030801, Peoples R China

关键词： alpha-dicarbonyl compounds; Propolis; Maillard reaction; UHPLC-QqQ-MS/MS

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.556； 五年影响因子：4.89 ）

ISSN： 0889-1575

年卷期： 2021 年 104 卷

页码：

收录情况： SCI

摘要： alpha-Dicarbonyl compounds (alpha-DCs), mainly produced during thermal treatment and storage of sugary foods, are routinely measured to evaluate food quality. Propolis is a functional food that has gained wide usage; thus, its quality control is an emerging concern. There are no reports on distribution of alpha-DCs in propolis. In this study, 10 main alpha-DCs standards of o-phenylenediamine (OPD) derivatives were prepared and confirmed by high resolution mass spectrometry. Based on these standards, an ultra-high performance liquid chromatography coupled to triple quadrupole tandem mass spectrometry (UHPLC-QqQ-MS/MS) was established and validated to determine the alpha-DCs in different propolis samples. Nine alpha-DCs were detected, ranging from 0.006 to 44.936 mg/kg. Methyl glyoxal (MGO), 2,3-butanedione and glucosone are rich in content, with the highest content of MGO. The level of 3-deoxypentosulose (3-DG) increased sharply with long-term storage of propolis extracts. The comparison revealed 20-fold lower levels of MGO when supercritical CO2 extraction and ethanol extraction were used, highlighting the importance of extraction techniques used in processing raw propolis. The investigation of commercially available propolis products found that alpha-DCs were in the range of 0.013-16.181 mg/kg. The results indicated that alpha-DCs can be the potential index to control propolis quality.

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