The dairy products are most widely used sources of good quality dietary proteins. Consumers have acknowledged the health benefits of dairy proteins in various formulations leading to their increased demand. Dairy products including milk and whey ingredients are sold at premium prices and are traded in large volumes. This makes them vulnerable to fraudulent activities and these products are prone to adulteration. There is an immediate need to establish comprehensive and meaningful authenticity testing of dairy ingredients based on their identity and purity. The authenticity verification of dairy ingredients will be very helpful to reduce risk of their economically motivated adulteration (EMA) and in improving consumer confidence in these type of premium products. Studies were undertaken to develop a method to verify authenticity of milk and whey proteins by analysis of their amino acid fingerprints. Amino acid composition of authentic skim milk and whey protein samples was determined not only in the authentic samples but also those spiked with selected potential adulterants. The results led to the development of the standard amino acid fingerprints of authentic skim milk powder and whey proteins samples in<b> </b>Food Chemicals Codex. Different amino acids of the dairy proteins samples are affected to different extent by different adulterants. Some amino acids are more sensitive to adulteration and are very helpful in establishing authenticity of whey protein and milk powder samples.

Amino acid fingerprints of authentic skim milk and whey protein products

ACS Spring Meeting 2021

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