Sampling and handling can change the quantity being measured. Precursor abundance is not a direct prediction of the final aroma, and the tentative intermediate must remain tentative. This is not evidence for a bourbon fruit-aroma formula.
Grape juice and wine experiments; processing effects PDF27–31, proposed chemistry PDF33–34. Freezing berries is not equivalent to freezing separated juice.
Free 3-MH and cysteine, cysteinylglycine and glutathione precursors are analytically distinct. Ripening, freezing, transportation, fining and harvesting alter measured precursor pools; fermentation transforms them. The chapter develops isotope-dilution methods and proposes an additional formation pathway, with a tentatively assigned intermediate.
40
20
Chapter 2; PDF-page numbering
All chapter text read; visual check of relevant figures, schemes and key tables completed September11,2026. PDF-page sequence used. Scientific uncertainties retained in Annotation.
No access
Evidence
Free 3-MH and cysteine, cysteinylglycine and glutathione precursors are analytically distinct. Ripening, freezing, transportation, fining and harvesting alter measured precursor pools; fermentation transforms them. The chapter develops isotope-dilution methods and proposes an additional formation pathway, with a tentatively assigned intermediate.
Location and context
Dimitra L. Capone, Mark A. Sefton, and David W. Jeffery. Chapter 2: Analytical Investigations of Wine Odorant 3-Mercaptohexan-1-ol and Its Precursors. Supplied PDF 20–40.
Grape juice and wine experiments; processing effects PDF27–31, proposed chemistry PDF33–34. Freezing berries is not equivalent to freezing separated juice.
Annotation
Sampling and handling can change the quantity being measured. Precursor abundance is not a direct prediction of the final aroma, and the tentative intermediate must remain tentative. This is not evidence for a bourbon fruit-aroma formula.
Verification checklist
Verified as an accurate representation of this source, not an independent replication of its results.