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. 2020 Apr 28;8(5):643. doi: 10.3390/microorganisms8050643

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Two-dimensional score plots of the Principal Component Analysis (PCA). Projection of the observations (LAB strains) into the principal component (PC) 1 to 5 (cumulative percent variability in parentheses), for the independent variables depicted in Figure 2: (a) PC 1 and PC 2 (39.4%); (b) PC 1 and PC 3 (36.7%); (c) PC 1 and PC 4 (35.8%); (d) PC 1 and PC 5 (32.9%); (e) PC 2 and PC 3 (30.5%); (f) PC 2 and PC 4 (29.4%); and (g) PC 2 and PC 5 (26.7%). The numbers in the plots refer to the identification of LAB strains.