By-products from olive culture provided to camel could modify the fatty acid composition of its milk. The present experiment involving ten lactating shecamels divided in two groups aimed to evaluate the effect of enriched diet with crude olive cake on the milk production, milk fat excretion and fatty acid composition. The control group received diet including alfalfa, barley and concentrate. In the treated group, barley was partially substitute by olive cake (3 kg.day?1 as fed) for more than 3 months. There was no negative or positive impact on milk production, the fat and protein content in milk. However, a significant increase of total quantity of fat and protein excreted in milk was observed in treated group. Some changes were observed in fatty acid composition with a decrease of medium-chain fatty acids (C15:0 iso, C15:0, C16:0 iso, C17:1) but also vaccenic acid (C18:1?-7). At reverse an increase of palmitic (C16:0) and ?-linolenic acid (C18:3?-6) was observed after 3 months of olive cake distribution. As for other ruminants, it is possible to modulate the fatty acid composition of camel milk by the diet, but further trials for longer period and highest quantity of olive cake have to be implemented in camel. (Résumé d'auteur

The change in the composition of camel milk in four dromedaries was studied by including the common measured parameters: protein, total fat, lactose, main minerals (calcium, phosphorus, and iron), and vitamin C. The fat matter varied from 4.34% to 7.81% with a slight decrease all along the lactation and a minimal value at the 14th week corresponding to the lactation peak. Those variations were less important for protein content (from 2.58% to 3.64%), but the minimal value was observed at the 14th week also. The lactose varied slightly around its mean of 3.46%. The vitamin C concentration varied from 48 to 256 mg/l with a tendency of increasing all along the lactation. Calcium and phosphorus concentrations were quite parallel and their ratio Ca/P was constant. The minimal values (1.43 g/l for calcium and 1.16 g/l for phosphorus) were observed at the beginning of the lactation. The iron concentrations varied around the mean of 1.73 mg/l.

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Eleven samples of dromedary camel colostrum in Kazakhstan, which originated from one farm only, were collected to study the changes in the physico-chemical composition (total fat, total protein, iodine index, lactose, calcium, phosphorus, iron, vitamin C, urea, ammonia, density, Dornic acidity, pH, and skimmed dry matter) all along the first postpartum week. At that time, the fat matter decreased from 25.9% to 3.1% and protein from 17.2% to 4.2%, in contrast to vitamin C which increased. Minerals showed high variations with lower values the first day after parturition and variable changes up to the end of the week where the values were stabilized. The iron concentration decreased from the second day postpartum. No clear changes of the other parameters were observed, notably for the non-protein nitrogen (urea and ammonia).

Objectives The majority of research programs had been focused on extract from the fruiting body. However, fungal mycelium obtained by submerged cultivation also has higher pharmacological potential. The aim of this study was investigation of the antioxidant and antimicrobial potential of Ganoderma lucidum and Trametes versicolor fungal mycelium biomass obtained by submerged cultivation and liquid fluid. Methods The antioxidant activity was evaluated by comparing the oxidation kinetics of the reduced form of 2,6-dichlorophenolindophenol with atmospheric oxygen in the presence/absence of biological samples. A criterion for evaluating for assessing the antioxidant activity was the values of the inhibition constant of the oxidation reaction. Antimicrobial activity of the fungal extracts was performed by agar disc diffusion method. Results A comparative analysis of antioxidant potential of G. lucidum and T. versicolor mycelium biomass and liquid fluid was conducted for the first time. It was found that antioxidant activity of fungal biomass depends on the cultivation time. The most active were the fractions obtained on the 21st day of fungal cultivation. Fungal extracts were more effective against Gram-positive bacteria compared to Gram-negative bacteria, micromycete and yeasts. Conclusions The results showed that submerged cultivation of mushrooms has significant industrial potential.