Comparison of polyfunctional thiol, element, and total essential oil contents in 32 hop varieties from different countries.

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  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 7702639 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7072 (Electronic) Linking ISSN: 03088146 NLM ISO Abbreviation: Food Chem Subsets: MEDLINE
    • Publication Information:
      Publication: Barking : Elsevier Applied Science Publishers
      Original Publication: Barking, Eng., Applied Science Publishers.
    • Subject Terms:
      Oils, Volatile*/chemistry ; Oils, Volatile*/analysis ; Sulfhydryl Compounds*/analysis ; Humulus*/chemistry ; Humulus*/classification; Tandem Mass Spectrometry ; Flavoring Agents/chemistry ; Flavoring Agents/analysis
    • Abstract:
      Volatile thiol 3-mercaptohexan-1-ol (3MH) and particularly 4-mercapto-4-methylpentan-2-one (4MMP) are highly potent flavour compounds in hops. For the determination, a simple and robust stable isotope dilution LC-MS/MS method was developed and applied to 32 hop varieties worldwide from harvest years 2019 and 2020. Limit of detection, precision, and recovery were 0.15 μg/kg, 10%, and 97-108%, respectively. Levels of 3MH and 4MMP ranged from 1.9 to 79.2 μg/kg and from undetectable to 37.1 μg/kg, respectively. Citra, Mosaic, and Strata were rich in both thiols. ICP analyses revealed, that variation of potassium content between the two harvest years was inversely correlated with that of manganese and rubidium (|r| ≥ 0.89) among 12 US varieties excluding Citra and Mosaic. Total essential oil content (0.34-2.7 mL/100 g) was inversely correlated with calcium content (|r| ≥ 0.65). Greatly varying thiol levels depending on variety, region and harvest year might lead to differing flavour results in beer.
      Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
      (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
    • Contributed Indexing:
      Keywords: Element; Essential oil; Hop (humulus lupulus); Polyfunctional thiol
    • Accession Number:
      0 (Oils, Volatile)
      0 (Sulfhydryl Compounds)
      0 (Flavoring Agents)
    • Publication Date:
      Date Created: 20240604 Date Completed: 20240709 Latest Revision: 20240709
    • Publication Date:
      20240709
    • Accession Number:
      10.1016/j.foodchem.2024.139855
    • Accession Number:
      38833861