The effect of partial replacement of camel's milk with Oat milk on the physicochemical, rheological, microbiological, antioxidant and sensory properties of probiotic stirred camel milk yoghurt during storage was investigated. Stirred yoghurt was made from camel milk served as a control, and the other treatments were made from camel milk after replacing 10, 20, 30 and 40% of it by Oat milk. Resultant stirred yoghurt of other treatments were analyzed after1, 5 and 10 day of storage at 4 ± 1˚C for physicochemical, microbiological, antioxidant and sensory properties Results revealed that partial replacement of camel's milk with Oat milk were more effective in increasing the total solids, protein, ash, total carbohydrates, acidity and total volatile fatty acid (TVFA), viscosity, phenolic content and antioxidant activity and these increments were proportional to the replacement ratio. Partial replacement of camel's milk with Oat milk enhanced the viability of Streptococcus thermophiles, Lactobacillus acidophilus and Bifidobacterium bifidum and this enhancement was proportional to the replacement ratio. Probiotic camel milk stirred yoghurt containing 40 % Oat milk had the highest scores for sensory properties compared to other probiotic camel milk stirred yoghurt treatments .Thus, The study concluded that camel milk could be replaced with Oat milk until 40 % as a source of bioactive components and dietary fiber in manufacture of probiotic camel stirred milk yoghurt, this replacement up to 40% improved the physicochemical, rheological, microbiological antioxidant and sensory properties of resultant yoghurt.
Oxidative stress can lead to chronic inflammation, nephrotoxicity, and renal damage. The consumption of plant-based dairy alternatives has increased rapidly worldwide due to their health effects. Bioactive components from natural sources, such as plants, are effective in protecting against oxidative stress. The present study evaluated the physicochemical and sensory properties of fermented camel milk made from camel milk mixed with pumpkin seed milk. Fermented camel milk consists of camel milk mixed with 25% and 50% pumpkin seed milk. This blend (fermented camel milk containing 50% pumpkin seed milk) was evaluated as an antioxidant agent in oxidative stress induced rats. A total of thirty-two male adult albino rats of Sprague Dawley® Rat strain weighing 150–180 g were randomly divided into four groups (n = 8). The first group was solely administered the standard diet and served as the negative control. The other rats (n = 24), received a basal diet, including being intraperitoneally injected with carbon tetrachloride, with a single dose at a rate of 2 mL/kg body weight) as a model for oxidative stress. The oxidative stress rats were divided into three groups; the first group did not receive any treatment and served as the positive control. The second and third groups were administered 10 g/day fermented camel milk and fermented camel milk containing 50% pumpkin seed milk. The results revealed that mixing the camel milk with pumpkin seed milk was more effective in increasing the total solids, protein, ash, fiber, acidity, viscosity, phenolic content, and antioxidant activity. These enhancements were proportional to the mixing ratio. Fermented camel milk containing 50% pumpkin seed milk exhibited the highest scores for sensory properties compared with the other fermented camel milk treatments. The group of rats with oxidative stress treated with fermented camel milk containing 50% pumpkin seed milk showed a significant decrease (p ≤ 0.05) in the levels of malondialdehyde (MDA), low-density lipoprotein (LDL), cholesterol (CL), triglycerides (TGs), AST, ALT, creatinine, and urea, and increased (p ≤ 0.05) high-density lipoprotein (HDL) and total protein and albumin compared with rats with oxidative stress. Consumption of fermented camel milk containing 50% pumpkin seed milk by the oxidative stress rat groups caused significant improvement in all of these factors compared with the positive control group. This study revealed that the administration of fermented camel milk containing 50% pumpkin seed milk to rats with oxidative stress prevented disorders related to oxidative stress compared with the untreated oxidative stress group. Thus, incorporating fermented camel milk might play a beneficial role in patients with oxidative stress.
Sweet red pepper is a natural source of phenol compounds and ascorbic acid that contributes to its high antioxidant potential. It could be used as a material to enrich different food systems such as soft and processed cheeses. The current study evaluates the effect of supplementation with 10% and 20% of sweet red pepper paste (SRPP) on the physicochemical, textural and sensory traits of spreadable processed cheese during storage at 7±1°C for three months. The addition of SRPP increased the total solids, fiber, protein, ash, fat, pH, potassium, and total phenolic contents of spreadable processed cheese, as compared with the control. Besides, the firmness, chewiness, and springiness of processed cheese supplemented with SRPP were lower than the control. Sensory evaluation scores revealed that the panelists accepted processed cheeses containing SRPP with slight differences scores between all treatments and control. The addition of SRPP in preparation of spreadable processed cheese could be recommended to produce an acceptable product with high nutritional and health properties containing antioxidants and dietary fiber.
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