Biochemistry
Ali Ahmadi Shapourabadi; Mohammad Fazilati; Habib-Allah Nazem
Abstract
Lactoferrin is one of the milk proteins that has shown a wide range of physiological activities such as antibacterial, anti-protozoal, anti-fungal, anti-viral, anti-cancer, antioxidant, anti-inflammatory and immunomodulatory. In this study, lactoferrin was extracted and purified from cow, sheep and goat ...
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Lactoferrin is one of the milk proteins that has shown a wide range of physiological activities such as antibacterial, anti-protozoal, anti-fungal, anti-viral, anti-cancer, antioxidant, anti-inflammatory and immunomodulatory. In this study, lactoferrin was extracted and purified from cow, sheep and goat milk. HPLC analysis and determination of the concentration of these three extracted lactoferrins were performed. Antibacterial activity against Gram negative Escherichia coli and Salmonella typhi and gram positive Bacillus cereus and Staphylococcus aureus and antioxidant activity were investigated. The activity of lactoferrin against DPPH free radical was investigated. Also, lactoferrin activity was evaluated in neutral acidic and alkaline environments. The combination test with iron was also performed with FeNTA reagent. The findings showed that lactoferrin has the ability to inhibit two bacteria, Escherichia coli and Staphylococcus aureus. Also, the evaluation of lactoferrin activity in neutral acidic and alkaline environments showed that lactoferrin is more stable in alkaline environment than other environments. In the combination test with iron, the results indicated the combination of lactoferrin with iron. The percentage of free radical inhibition was equal to %4.49. Also, the results showed that the concentration of lactoferrin in goat's milk is higher than that of sheep's and cow's milk and its amount was equal to 131.66 μg/ml.
Nahid Ghaed Amini; Mohammad Fazilati; Saeid Habib-Allahi; Habib-Allah Nazem; Seyed Hossein Hejazi
Abstract
Despite the many chemical drugs available, the prevalence and mortality rate of melanoma is high. Therefore, the use of drugs of natural origin with lower cost and higher efficiency can be a good way to save patients. Therefore, in this study, the main purpose of this study was to evaluate the effects ...
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Despite the many chemical drugs available, the prevalence and mortality rate of melanoma is high. Therefore, the use of drugs of natural origin with lower cost and higher efficiency can be a good way to save patients. Therefore, in this study, the main purpose of this study was to evaluate the effects of Moringa extract on melanoma. Hydroalcoholic extract of Moringa leaves was prepared. After examining the total phenolic and flavonoid content of the extract, their type was confirmed by HPLC and spectrophotometer methods. The antioxidant power was measured by DPPH free radical scavenging and FRPA methods. Then the tumor was induced in C57BL6 mice and then the effects of the extract were evaluated on B16F10 cell line and tumor mice. The total flavonoid content was 60.65±1.75 mg quercetin acid per gram of dry extract and the total phenol content was 20.25±1.23 mg gallic acid per gram of dry extract. Three phenolic and flavonoid compounds with antioxidant properties identified include quercetin, gallic acid, and caffeic acid. The free radical scavenging power and the reducing power of the extract increased with increasing the concentration. The IC50 of moringa extract was 73 μM/mol. The tumor volume was significantly reduced by different doses of the extract in two weeks. The results of present study show the positive effect of Moringa leaves extract in reducing the survival rate of B16F10 melanoma cancer cells and tumor volume in mice.
