Free Fatty Acid (FFA)
Free Fatty Acid (FFA) testing is a critical quality assessment parameter used in animal feed and feed ingredient analysis to determine the freshness and stability of fats and oils. Fats are an important energy source in animal nutrition; however, when they undergo degradation due to poor storage conditions, moisture, heat, or microbial activity, triglycerides break down into free fatty acids. An increase in FFA content is a clear indication of fat hydrolysis and early rancidity. Therefore, FFA testing plays a vital role in ensuring the overall quality, safety, and nutritional value of animal feed.
Methods:
IS 548 (Part 1): 1964
The FFA test is based on the neutralization of free fatty acids present in the fat or feed sample by titration with a standard alkali solution, usually potassium hydroxide (KOH) or sodium hydroxide (NaOH). The amount of alkali required to neutralize the acids is measured and calculated. Results are commonly expressed as a percentage of oleic acid or as acid value, depending on laboratory reporting practices and regulatory requirements.
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