Observational association is not an isolated causal dose-response. Do not use a single marker concentration as a universal sensory cutoff, or convert historical air-quality information into current advice. Fresh September28: PDF76 compares bound precursor with a free-odorant threshold, which cannot establish direct aroma activity. Methods/results cultivar descriptions also differ; county particulate exposure is not a vineyard-specific molecular dose.
Industry study by E. & J. Gallo authors; Table1 PDF72 and exposure maps/plots PDF69–76. Exposure duration, location and intensity are not independently randomized.
Enzymatic hydrolysis revealed substantial bound guaiacol and methylguaiacol in smoke-exposed fruit, sometimes despite low free concentrations. The chapter combines the 2008 wildfire geography, exposure observations and grape analyses to assess smoke-related aroma risk.
79
67
Chapter 5; PDF-page numbering
September28: full chapter freshly read and relevant figures/tables inspected. Paraphrase remains a bounded source representation; new numerical/method qualifications added. PDF locators retained.
No access
Evidence
Enzymatic hydrolysis revealed substantial bound guaiacol and methylguaiacol in smoke-exposed fruit, sometimes despite low free concentrations. The chapter combines the 2008 wildfire geography, exposure observations and grape analyses to assess smoke-related aroma risk.
Location and context
Hui Hui Chong and Michael T. Cleary. Chapter 5: Smoke Taint Aroma Assessment in 2008 California Grape Harvest. Supplied PDF 67–79.
Industry study by E. & J. Gallo authors; Table1 PDF72 and exposure maps/plots PDF69–76. Exposure duration, location and intensity are not independently randomized.
Annotation
Observational association is not an isolated causal dose-response. Do not use a single marker concentration as a universal sensory cutoff, or convert historical air-quality information into current advice.
Fresh September 28 qualification: PDF76 compares bound precursor with a free-odorant threshold, which cannot establish direct aroma activity. Methods/results cultivar descriptions also differ; county particulate exposure is not a vineyard-specific molecular dose.
Verification checklist
Verified as an accurate representation of this source, not an independent replication of its results.