Biodegradable metallic implants are of significant importance in the replacement of bones or the repair of bone defects. Iron-phosphate-coated carbonyl iron powder (Fe/P) was prepared by the phosphating method. Moreover, Fe/P-Mn alloy was produced by sintering the Fe/P powder mixed with manganese powder. Bare carbonyl iron samples and the Fe/P and Fe/P-Mn sintered samples were evaluated for their microstructure, cytotoxicity, and hemocompatibility. The microstructure of the sintered samples was examined using an optical microscope and scanning electron microscopic analysis. Corrosion behavior was evaluated by potentiodynamic polarization in Hank's solution. The in vitro biocompatibilities were investigated by cytotoxicity and hemolysis tests. The results obtained demonstrate that the addition of Mn resulted in higher surface inhomogeneity, porosity and roughness as well as in increased cytotoxicity. The phosphate coating has a moderately negative effect on the cytotoxicity. The corrosion rates determined from Tafel diagrams were ordered in the following sequence: Fe/P-Mn, Fe, Fe/P from high to low. The hemocompatibility of experimental samples was ordered in the following sequence: Fe/P, Fe/P-Mn, Fe from high to low. All samples were found to be hemocompatible.
Administration of Thamnidium elegans for effective utilization of agroindustrial materials (wheat bran) creates new perspectives for animal cereal diet enriched with fungal γ-linolenic acid (GLA). The aim of our study was to evaluate the effect of adding prefermented cereal product containing a high amount of gamma-linolenic acid into the feed on broiler chickens' performance, fatty acids profile and oxidative stability in chilled breast meat. Seventy eight COBB 500 oneday old broiler chicks were randomly divided into 2 treatment groups with three replications and fattened for 42 days. During the first 21 days, all broilers consumed the starter diet. After three weeks, broilers were fed the grower diet; controls were fed without the addition of prefermented cereal product; and the experimental group was supplemented with 3% of prefermented product. Higher final body weight (2 688 vs. 2 604 g) and feed conversion ratio were recorded in the experimental group (P > 0.05). The increased GLA content in the experimental diet (0.095 g·kg -1
The aim of this work was to study the effect of the addition of prefermented cereal-based bioproduct (5%; BP) enriched with c-linolenic acid to the commercial feed for broiler chickens on the production indicators, chemical composition, fatty acid profile and lipid oxidation of the meat. BP was prepared by solid-state fermentation using fungal strain Cunninghamella elegans CCF 2591. Spelt bran was used as a substrate. A total of 80 broiler chickens (COBB 500) were used in this experiment. Half of them (experimental group) was fed with experimental feed and second half (control group) was fed only with commercial compound feed. Administration of BP to the broilers positively influenced production indicators. Broilers of the experimental group reached higher final weight, and showed lower average daily feed intake, feed conversion ratio, and feed intake compared to the control group. Meat of the experimental group consisted of the lower amount of total protein and fat. BP influenced fatty acid profile as well. Meat of the experimental group, in comparison to control, contained higher amount of unsaturated fatty acids (UFA) and lower amount of saturated fatty acids. Mainly the amount of a-linolenic acid and c-linolenic acid was higher. Significantly higher concentration of malondialdehyde (MDA) was observed in muscles of experimental group during 7-day storage in refrigerator. Based on the results obtained we can conclude that replacing 5% of the commercial feed by BP could not only improve performance parameters of chickens, but also affect chemical composition and fatty acid content of meat.
ARTICLE HISTORY
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.