The Quality of Salted Sun-Dried Meat from Young Nellore Bulls Fed Diets with Lauric Acid.

This study aims to evaluate the quality of salted sun-dried meat from young bulls (Nellore cattle) fed with a diet containing 0.0, 0.5, 1.0 and 1.5% of lauric acid in the total dry matter (DM). Thirty-two Nellore bulls with initial body weight of 368 ± 32 kg were used. A linear decrease ( p < 0.05) in pH and protein content of the salted sun-dried meat was observed with the inclusion of lauric acid. The moisture, ash, lipid, collagen content, water-holding capacity, cooking loss, color indexes (L*, a* , b* , C* ), and shear force were not affected. Lipid oxidation at 7 days of storage increased linearly in the salted sun-dried meat. Most of the fatty acid composition of the salted sun-dried meat from the semimembranosus muscle of young bulls was not influenced ( p > 0.05) by the lauric acid inclusion in the bulls' diet. However, there was a linear increase ( p < 0.05) in the SFA lauric acid (C12:0), PUFAn-3 EPA (C20:5 n - 3) and DHA (C22:6 n - 3), and a quadratic increase in the PUFAn-6 arachidonic (C20:4 n - 6) due to lauric acid addition from palm kernel oil in the diet. There was a liner increase ( p < 0.05) in the total ∑PUFA, ∑ n - 6, ∑ n - 3 contents of salted sun-dried meat from the semimembranosus muscle of young bulls and the h:H health index of the level of lauric acid inclusion in bull's diet. In contrast, the thrombogenicity health index (TI) and ∑ n - 6:∑ n - 3 ratio content in salted sun-dried meat from the semimembranosus muscle of young bulls presented a linear decrease ( p < 0.05) due to lauric acid addition in the bulls' diet. Lauric acid (C12:0) inclusion up to 1.5% in the diet of young Nellore bull improved the fatty acid composition of the salted sun-dried meat, increasing EPA, DHA, n - 6 and n - 3, TI, and h:H indexes, which are associated with a better lipid quality of meat products, and further improves tenderness at the highest concentration.