This test method uses static headspace gas chromatography with flame ionization detection (GC–FID) to measure fusel alcohols—higher-chain alcohols produced during fermentation. The measurement of fusel alcohols is important for quality control, regulatory compliance, and detecting potential adulteration or off-spec fermentation. This test method identifies isopropanol, N-propanol, isobutanol, isoamyl alcohol, and N-amyl alcohol.
The FCC method for Organic Impurities in Ethanol is designed to detect the presence of organic contaminants (e.g., fusel oils, ketones, methanol) in food-grade or pharmaceutical-grade ethanol. These impurities can affect the taste, odor, and safety of ethanol used in consumable or medicinal products.
The FCC method for Organic Impurities in Ethanol is designed to detect the presence of organic contaminants (e.g., fusel oils, ketones, methanol) in food-grade or pharmaceutical-grade ethanol. These impurities can affect the taste, odor, and safety of ethanol used in consumable or medicinal products.
The FCC method for Organic Impurities in Ethanol is designed to detect the presence of organic contaminants (e.g., fusel oils, ketones, methanol) in food-grade or pharmaceutical-grade ethanol. These impurities can affect the taste, odor, and safety of ethanol used in consumable or medicinal products.
The FCC (Food Chemicals Codex) method for Solubility in Water of Ethanol is a qualitative test used to verify the miscibility and clarity of ethanol when mixed with water in specified proportions. It helps confirm the identity and purity of ethanol by ensuring that it dissolves completely and remains clear, indicating the absence of non-polar… Continue reading FCC Solubility in Water of Ethanol
The FCC (Food Chemicals Codex) method for Substances Darkened by Sulfuric Acid in Ethanol is a qualitative test used to detect oxidizable or reactive organic impurities in ethanol that may cause discoloration when exposed to concentrated sulfuric acid (H₂SO₄). These substances, if present, can affect the odor, color, and stability of ethanol, especially in food,… Continue reading FCC Subs. Darkened by H2SO4 in EtOH
The FCC (Food Chemicals Codex) method for Substances Reducing Permanganate in Ethanol is a qualitative test used to detect oxidizable impurities—such as aldehydes or other organic compounds—that can reduce potassium permanganate (KMnO₄). These reducing substances can compromise the purity, flavor, and stability of ethanol intended for food, beverage, or pharmaceutical use.
This test method determines denaturant by subtracting the measured ethanol and moisture fractions from the total sample, assuming the remaining portion is denaturant.
This test method is a standardized analytical procedure for the quantitative determination of ethanol and methanol concentrations in fuel ethanol. The method typically uses gas chromatography (GC) to separate and measure these alcohols with high accuracy and precision.
This test method is an enzymatic spectrophotometric method that quantifies D‑mannose by converting sugars through sequential enzyme reactions. It provides a specific, sensitive determination of mannose in plant products and polysaccharide hydrolysates.