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<p>Mumefural (MF) which is one of the citrate esters with 5-hydoxymethyl-2-furfural is a component of Japanese apricot fruit juice concentrate (plum extract). A selective LC-fluorescence detection method was developed for the simultaneous quantification of MF and citric acid in plum extracts using intramolecular excimer-forming derivatization. Analytes were derivatized to their corresponding polypyrene derivatives using 4-(1-pyrene)butyric hydrazide (PBH) in the presence of condensation reagent, separated by reversed-phase LC, and detected in the pyrene-excimer fluorescence region (Ex/Em, 345/475&#xa0;nm). The detection limits (<i>S</i>/<i>N</i> = 3) for the analytes were sub-picomole levels per 10-μL injection volume. The method was applied for the determination of MF and citric acid in plum extracts and a typical plum wine with a simple pretreatment. Large amounts of citric acid were detected in the plum extracts and the plum wine, whereas MF was detected only in the commercial plum extracts.</p> Graphical abstract <p></p>

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Simultaneous determination of mumefural and citric acid in Japanese apricot fruit juice concentrate using LC with intramolecular excimer-forming derivatization

  • 期刊论文

  • 发表日期：

    2025年7月29日

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  • Hideyuki Yoshida,
  • Yuka Imura,
  • Sayaka Minematsu,
  • Misaki Ono,
  • Reiko Koga,
  • Hitoshi Nohta

摘要

Mumefural (MF) which is one of the citrate esters with 5-hydoxymethyl-2-furfural is a component of Japanese apricot fruit juice concentrate (plum extract). A selective LC-fluorescence detection method was developed for the simultaneous quantification of MF and citric acid in plum extracts using intramolecular excimer-forming derivatization. Analytes were derivatized to their corresponding polypyrene derivatives using 4-(1-pyrene)butyric hydrazide (PBH) in the presence of condensation reagent, separated by reversed-phase LC, and detected in the pyrene-excimer fluorescence region (Ex/Em, 345/475 nm). The detection limits (S/N = 3) for the analytes were sub-picomole levels per 10-μL injection volume. The method was applied for the determination of MF and citric acid in plum extracts and a typical plum wine with a simple pretreatment. Large amounts of citric acid were detected in the plum extracts and the plum wine, whereas MF was detected only in the commercial plum extracts.

Graphical abstract