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Evaluation of probiotics in vegetable juices: tomato (Solanum lycopersicum), carrot (Daucus carota subsp. sativus) and beetroot juice (Beta vulgaris)


Probiotics are known to human kind since ages as they are important component in fermented milk products, however the use of probiotics in non-dairy product is a novel method for the delivery of probiotics. Delivery of probiotics through non-dairy products will be beneficial for consumers who are lactose intolerant who are deprived of benefits of probiotics by dairy products. This studies aim at developing novel vegetable juices containing probiotic bacteria. Three different strains of bacteria have been used, i.e. Lactobacillus plantarum, Lactobacillus acidophilus, Lactobacillus delbrueckii in carrot, beetroot and tomato juice. The viability of the bacteria has been checked after a specific duration of time of fermentation by Koch’s plate count method. The vegetable used for juices (carrot, beetroot, tomato) consist of high amount of antioxidants like carotenoids in carrot, betaxanthins and betacyanins in beetroot, lycopene in tomato. These antioxidant provide numerous health benefits to human body. The antioxidant activity in the juices has been checked before and after fermentation by HPLC and spectroscopic methods. The three bacterial strains Lactobacillus plantarum, Lactobacillus acidophilus and Lactobacillus delbrueckii used in three types of juices including tomato juice, carrot juice and beetroot juice showed good growth except Lactobacillus acidophilus due to reasons like insufficient nutrients. The amount of sugars and acids of the three juices indicated that the fermentation process takes place at a good and satisfying rate. This product will be especially useful for the people who are lactose intolerant who cannot intake probiotics via milk and milk products. Vegetable juices also have almost zero fat content and high in fiber so the people who are on a fat free diet can consume this product.

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by [KG], [KD] and [ER-K]. The first draft of the manuscript was written by [KG] and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Kamila Goderska.

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Author (Kamila Goderska) declares that she has no conflict of interest. Author (Kanan Dombhare) declares that she has no conflict of interest. Author (Elżbieta Radziejewska-Kubzdela) declares that she has no conflict of interest.

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Communicated by Erko Stackebrandt.

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Goderska, K., Dombhare, K. & Radziejewska-Kubzdela, E. Evaluation of probiotics in vegetable juices: tomato (Solanum lycopersicum), carrot (Daucus carota subsp. sativus) and beetroot juice (Beta vulgaris). Arch Microbiol 204, 300 (2022).

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  • Probiotics
  • Non-dairy beverages
  • Antioxidants
  • Micronutrients