Protein content in isolated whey protein-based supplements

The constant search for the best physical form has attracted many people to start the practice of physical activity. However, a difficulty in eating properly and the desire to obtain satisfactory results, has led the public to consume supplements that enhance the effects of physical activity. In this sense, whey protein has stood out for being a protein supplement of high nutritional quality, extracted from whey, ingested with an increase in muscle mass and strength, hypertrophy and reduction of body fat. The objective of this study was to determine the protein content in isolated whey protein sold in the form of sachets and to compare the results found with the values required in the labeling of these products. Four used Whey protein isolates were added, sold in the form of sachets in local stores in Vitoria da Conquista-Bahia, and sent to the Bromatology laboratory of the University Center for Technology and Sciences for analysis. The method adopted for protein quantification was micro Keljeldahl. The results showed that all variations derived in protein content when compared to labeling and laboratory analysis, however all were within the variation tolerated by the legislation (+/- 20%). However, like B, C and D the minimum content to be granted (85%) is not subordinated. The importance of constant inspection is emphasized so that these products can in fact present a composition produced on the label, which will guide consumers in a more reliable way.