Exploration of Foods and Foodomics

Table 2. Phenotypic and biochemical characteristics of the Epirus sheep milk isolates.

Species	*Streptococcus parauberis*		*Streptococcus equinus*	*Streptococcus gallolyticus*	*Streptococcus lutetiensis*
Biotype	I	II
No. isolates¹	4	3	6	1	2
Cell shape	CP/CSC	CP/CSC	CLC	CP	CP/CSC
NH₃ from arginine	+	+	–	–	–
Growth at:
10^oC	+	+	–	–	–
45^oC	–	–	+	+	+
4.0% salt	+	+	+/(+)	–	–/(+)
6.5% salt	–	+d	–	–	–
Growth on KAA agar	–	–	(+)/–	(+)	+
Fermentation of:
L-Arabinose	–	–	–	–	–
Cellobiose	–	+	–	+	+
Galactose	+	+	+	+	+
Lactose	+	+	+	+	+
Maltose	+	+	+	+	+
Mannitol	–	–	–	–	–
Melibiose	–	–	–	+	+
Raffinose	–	–	+/–*	+	+
Ribose	+	+	–	–	–
Sorbitol	–	+	–	–	–
Sucrose	+	+	+	+	+
Trehalose	+	+	+/–*	+	+
Xylose	–	–	–	–	–

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Symbols: +: all isolates were positive; –: all isolates were negative; (+): weak reaction; ++: strong positive reaction; +d: delayed reaction. CP: cocci in pairs; CSC: cocci in short chains; CLC: cocci in long chains. The asterisk attached to the ‘minus’ symbol in the S. equinus column refers to strain KTM 16 in Table 1 that was the only of the six isolates that showed a negative fermentation reaction with raffinose and trehalose. ¹ The number of isolates for each species and biotype correspond with the number of the coded isolates as grouped in Table 1.

Supplementary materials

The supplementary table for this article is available at: https://www.explorationpub.com/uploads/Article/file/1010187_sup_1.pdf.

Declarations

Acknowledgments

The authors wish to thank Vasiliki Zafeiropoulou and Maria Mavropoulou, Veterinary Laboratory, Food Hygiene Department, Ministry of Agriculture, Athens, Greece, for identifying the API 20 STREP code numbers of the present Streptococcus isolates with the apiweb^TM software, not available in our laboratory.

Author contributions

JS: Conceptualization, Formal analysis, Methodology, Validation, Resources, Data curation, Project administration, Writing—original draft, Writing—review & editing, Investigation, Visualization. AK: Formal analysis, Validation, Writing—review & editing. Both authors read and approved the submitted version.

Conflicts of interest

The authors declare that they have no conflicts of interest.

Ethical approval

Not applicable.

Consent to participate

Not applicable.

Consent to publication

Not applicable.

Availability of data and materials

Data are contained within the article. Raw data will be made available on request.

Funding

Not applicable.

Copyright

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