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Communication

Microbial Populations of Fresh and Cold Stored Donkey Milk by High-Throughput Sequencing Provide Indication for A Correct Management of This High-Value Product

1
Department of Sciences of Agriculture, Food, and Environment, University of Foggia, via Napoli 25, 71122 Foggia, Italy
2
Department of Clinical and Experimental Medicine, University of Foggia, Viale Pinto 1, 71122 Foggia, Italy
3
Institute of Sciences of Food Production, National Research Council (CNR), c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2314; https://doi.org/10.3390/app10072314
Received: 12 March 2020 / Revised: 20 March 2020 / Accepted: 25 March 2020 / Published: 28 March 2020
(This article belongs to the Special Issue State-of-Art of Microbial Concerns in Food Safety)
Donkey milk is receiving increasing interest due to its attractive nutrient and functional properties (but also cosmetic), which make it a suitable food for sensitive consumers, such as infants with allergies, the immunocompromised, and elderly people. Our study aims to provide further information on the microbial variability of donkey milk under cold storage conditions. Therefore, we analysed by high-throughput sequencing the bacterial communities in unpasteurized donkey milk just milked, and after three days of conservation at 4 °C, respectively. Results showed that fresh donkey milk was characterized by a high incidence of spoilage Gram-negative bacteria mainly belonging to Pseudomonas spp. A composition lower than 5% of lactic acid bacteria was found in fresh milk samples, with Lactococcus spp. being the most abundant. The occurrence of microbial species belonging to risk group 2 was found in fresh milk. After three days of cold storage, the bacterial biodiversity of donkey milk was strongly reduced, since about 93% of the bacterial communities were identified as different species of psychrotrophic Pseudomonas. In conclusion, we report a preliminary description of the microbial diversity of donkey milk by using a metagenomic approach and encouraging a correct exploitation of this high-value niche product. View Full-Text
Keywords: donkey milk; Pseudomonas; psychrotrophic bacteria; high-throughput sequencing donkey milk; Pseudomonas; psychrotrophic bacteria; high-throughput sequencing
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MDPI and ACS Style

Russo, P.; Fiocco, D.; Albenzio, M.; Spano, G.; Capozzi, V. Microbial Populations of Fresh and Cold Stored Donkey Milk by High-Throughput Sequencing Provide Indication for A Correct Management of This High-Value Product. Appl. Sci. 2020, 10, 2314. https://doi.org/10.3390/app10072314

AMA Style

Russo P, Fiocco D, Albenzio M, Spano G, Capozzi V. Microbial Populations of Fresh and Cold Stored Donkey Milk by High-Throughput Sequencing Provide Indication for A Correct Management of This High-Value Product. Applied Sciences. 2020; 10(7):2314. https://doi.org/10.3390/app10072314

Chicago/Turabian Style

Russo, Pasquale, Daniela Fiocco, Marzia Albenzio, Giuseppe Spano, and Vittorio Capozzi. 2020. "Microbial Populations of Fresh and Cold Stored Donkey Milk by High-Throughput Sequencing Provide Indication for A Correct Management of This High-Value Product" Applied Sciences 10, no. 7: 2314. https://doi.org/10.3390/app10072314

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