Lactic Fermentation of Camel Milk via some of Exopolysaccharide Bacteria Generator and Investigation of the Physicochemical and Antioxidant Properties of the Resulted Product

Subject Areas : Microbiology

M. Ghaforiyan ¹ (دانش آموخته کارشناسی ارشد، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران)
H. Ezzatpanah ² (دانشیار دانشکده علوم و مهندسی صنایع غذایی، واحد علوم و تحقیقات تهران، دانشگاه آزاد اسلامی، تهران، ایران)
A. Mohammadi Nafchi ³ (استادیار گروه صنایع غذایی، واحد دامغان، دانشگاه آزاد اسلامی، دامغان، ایران)
M. Tajabadi Ebrahimi ⁴ (استادیار گروه میکروبیولوژی، واحد تهران مرکز، دانشگاه آزاد اسلامی، تهران، ایران)

Received: 2016-02-21 Accepted : 2016-02-21 Published : 2016-03-20

Keywords: antioxidant, Camel Milk, Exopolysaccharide, Fermentation, Lactic Acid Bacteria,

Abstract :

Introduction: Due to the problems concerned in urban life and the consequences of noncommunicablediseases such as diabetes, cardiovascular disease and cancer, it is necessary tochange the eating habits as a way to help and slow down the diseases. Camel milk is a healthyvaluable source that can be presented on the consumers table and can be fermented to extendits shelf life. This research has studied the thermal process of camel milk with producingExololysaccharide bacteria which in addition exhibits antioxidant activity and is effective inimprovement of the sensory characteristics of fermented process.Materials and Methods: Camel milk has been heated at 85°C for 15 minutes and then isimpregnated with Exopolysaccharide bacteria including lactobacillus casei TD4, lactobacilluscasei T20, and lactobacillus plantarum. After incubation periods of first, seventh, fourteenthand twenty first days the physico-chemical characteristics particularly the antioxidant andsensory properties were evaluated.Results: The findings determined that the thermal process apart from the safety increased theshelf life of the product. Strains producing Exopolysaccharide beside the products as theresult of fermentation like lactic acid give the product more acceptability from consumerviewpoint and also have significant role in increasing the antioxidant activity. These productsat refrigerator temperature after 14 days have the highest antioxidant property.Conclusion: This research work indicated that the thermal process did not exhibit significanteffect on the chemical composition and antioxidant activity of the product. In factfermentation by suitable lactic bacteria makes it valuable due to the increase in the shelf life.