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IFF — glucoamylase dose governs glucose supply and osmotic stress
IFF — glucoamylase dose governs glucose supply and osmotic stress

IFF — glucoamylase dose governs glucose supply and osmotic stress

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Raw Materials and AgricultureRaw Materials and AgricultureFermentationFermentation
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Core summary

IFF explains that simultaneous saccharification and fermentation couples glucoamylase conversion of dextrins to glucose with yeast fermentation, and that either too little or too much enzyme can impair performance.

Author argument

Too little glucoamylase may leave yeast inadequately supplied with glucose and cause sluggish fermentation. Too much may create early glucose overabundance, osmotic stress, and reduced ethanol production.

Evidence map

  • IFF defines SSF as coupled dextrin conversion and glucose consumptionIFF defines SSF as coupled dextrin conversion and glucose consumption
  • IFF shows that both low and high glucoamylase doses can impair SSFIFF shows that both low and high glucoamylase doses can impair SSF

Researcher synthesis

IFF turns the rate-matching concept into a two-sided operating boundary. SSF is a coupled control problem: glucose supply must be sufficient for yeast without outpacing uptake enough to produce osmotic stress.

Assessment

Strength: explicit definition plus underdose/overdose consequences in an official technical guide.

Boundary: commercial fuel-ethanol guidance rather than whiskey-specific plant evidence; no named plant, dose-response data, trial design, replication, raw measurements, or uncertainty.

Knowledge connection

Supports SSF meters sugar release to fermentation demandSSF meters sugar release to fermentation demand and the sugar-release portion of SSF can reduce glucose accumulation by matching release to yeast uptakeSSF can reduce glucose accumulation by matching release to yeast uptake. Transfer is limited to the general enzyme-and-yeast mechanism.

Sources

  • No access
Date
August 26, 2026
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Contributors
International Flavors & Fragrances (IFF)International Flavors & Fragrances (IFF)
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Source
No access
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Excerpts
IFF defines SSF as coupled dextrin conversion and glucose consumptionIFF defines SSF as coupled dextrin conversion and glucose consumptionIFF shows that both low and high glucoamylase doses can impair SSFIFF shows that both low and high glucoamylase doses can impair SSF
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Zettels
SSF meters sugar release to fermentation demandSSF meters sugar release to fermentation demand
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Citations
IFFFermentationTroubleshooting — 1IFFFermentationTroubleshooting — 1IFFFermentationTroubleshooting — 2IFFFermentationTroubleshooting — 2
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