Physicochemical characterization of by-products from beef cattle slaughter and economic feasibility of commercialization

Abstract

The aim was to evaluate the proximate food composition, cholesterol content, coloring and economic aspects of the main nutrients present in by-products from the slaughter of cattle. The samples were collected from 14 organs, with four repetitions each, of which we conducted the analyses of moisture, crude protein, mineral matter, cholesterol and fat content. The color was measured through the coordinates L*, a*, b*. The differences between the groups of red and white viscera were evaluated by contrasts analysis. Subsequently, the data were subjected to multivariate analysis of variance, which was complemented by the principal component technique. In the analysis of contrast between red and white viscera, the results showed that the components with the highest content of total fat does not necessarily have the highest content of cholesterol and vice-versa. For minerals, the red viscera presented higher content than white viscera and, in order to analyze the protein composition, there was less variability for red viscera in relation to white viscera. In the color analysis, the values for the color readings indicated uniformity between the external and internal readings, except for the tongue. On mean, the proximate composition values for the offals are similar to the values for beef, especially regarding the red viscera.

Agro-Industrial Waste Management: The Circular and Bioeconomic Perspective

“…Bioactive molecules from agricultural and food residues include phenols, polyphenols, non-starch polysaccharides (cellulose, hemi-cellulose, and lignin), oligosaccharides, carotenoids, soluble fibers, terpenoids, proteins, tocopherols, and phytosterols [47,48,120,121]. Animal wastes and residues (dairy waste, sea food waste, slaughter wastes) have high levels of proteins, lipids, and minerals [48,122,123]. Prado et al [124] had observed that animal and vegetable wastes are low-cost materials for bioactive compounds using suitable processes.…”

Biological Approaches for Extraction of Bioactive Compounds From Agro-industrial By-products: A Review

“…The dairy industry generates around 4 to 11 million tons of waste per year, including whey, dairy sludge, and wastewater (processing, cleaning, and sanitary), with great pollutant potential (Ahmad et al, 2019;Lemes et al, 2020a). In general, animal residues present high levels of proteins, lipids, and minerals (Jayathilakan et al, 2012;Jain and Anal, 2016;Maysonnave et al, 2020).…”