Table 4.
Relative abundance of the most abundant genera in the different milk fractions (whole milk, fat layer and skimmed milk) from milk samples (n = 7).
| Phylum/Genus | Whole Milk | Fat Layer | Skimmed Milk | ||||
|---|---|---|---|---|---|---|---|
| n (%) | Relative Abundance 1 | n (%) | Relative Abundance | n (%) | Relative Abundance | p-Value 2 | |
| Firmicutes | |||||||
| Staphylococcus | 7 (100%) | 12.10 (7.95–25.17) | 7 (100%) | 3.43 (1.23–16.61) | 7 (100%) | 9.61 (0.94–21.08) | 0.53 |
| Streptococcus | 7 (100%) | 2.31 (1.29–4.57) | 7 (100%) | 4.03 (2.54–18.01) | 7 (100%) | 2.66 (2.33–4.95) | 0.59 |
| Lactobacillus | 7 (100%) | 1.43 (0.78–2.14) | 7 (100%) | 1.87 (0.86–3.78) | 7 (100%) | 2.20 (0.46–3.55) | 0.95 |
| Pediococcus | 7 (100%) | 1.31 (0.87–1.84) | 6 (86%) | 1.38 (0.78–1.49) | 6 (86%) | 1.39 (0.66–1.85) | 0.82 |
| Bacillus | 6 (86%) | 0.34 (0.24–0.45) | 4 (57%) | 0.17 (0.00–0.29) | 5 (71%) | 0.33 (0.16–0.44) | 0.39 |
| Peptoniphilus | 5 (71%) | 0.35 (0.11–1.44) | 5 (71%) | 0.81 (0.40–1.27) | 3 (43%) | 0.00 (0.00–0.84) | 0.56 |
| Lactococcus | 3 (43%) | 0.00 (0.00–2.91) | 4 (57%) | 0.22 (0.00–6.98) | 6 (86%) | 3.57 (1.76–7.09) | 0.33 |
| Actinobacteria | |||||||
| Propionibacterium | 5 (71%) | 1.11 (0.12–4.98) | 6 (86%) | 6.52 (0.60–7.08) | 6 (86%) | 1.37 (1.14–2.35) | 0.84 |
| Corynebacterium | 5 (71%) | 1.11 (0.23–2.52) | 3 (43%) | 0.00 (0.00–0.84) | 4 (57%) | 0.48 (0.00–3.13) | 0.57 |
| Bifidobacterium | 2 (29%) | 0.00 (0.00–0.66) | 3 (43%) | 0.00 (0.00–0.33) | 2 (29%) | 0.00 (0.00–0.14) | 0.84 |
| Proteobacteria | |||||||
| Chondromyces | 5 (71%) | 2.51 (0.99–6.15) | 5 (71%) | 3.43 (1.23–3.80) | 4 (57%) | 1.31 (0.00–4.18) | 0.79 |
| Burkholderia | 7 (100%) | 0.77 (0.64–0.86) | 7 (100%) | 1.40 (1.06–1.60) | 6 (86%) | 1.03 (0.62–1.12) | 0.04 |
| Sphingomonas | 5 (71%) | 0.60 (0.12–3.32) | 6 (86%) | 0.94 (0.41–1.46) | 4 (57%) | 0.38 (0.00–0.75) | 0.38 |
| Hyphomicrobium | 5 (71%) | 0.30 (0.11–0.68) | 6 (86%) | 0.43 (0.30–0.62) | 3 (43%) | 0.00 (0.00–0.37) | 0.28 |
| Novosphingobium | 2 (29%) | 0.00 (0.00–0.21) | 3 (43%) | 0.00 (0.00–0.37) | 4 (57%) | 0.13 (0.00–0.52) | 0.69 |
| Azospirillum | 2 (29%) | 0.00 (0.00–0.18) | 4 (57%) | 0.38 (0.00–0.68) | 4 (57%) | 0.43 (0.00–1.47) | 0.25 |
| Chondromyces | 5 (71%) | 2.51 (0.99–6.15) | 5 (71%) | 3.43 (1.23–3.80) | 4 (57%) | 1.31 (0.00–4.18) | 0.79 |
| Bacteroidetes | |||||||
| Pedobacter | 7 (100%) | 0.61 (0.38–0.88) | 7 (100%) | 0.56 (0.42–0.83) | 6 (86%) | 0.72 (0.44–0.89) | 0.96 |
| Unclassified genera | 7 (100%) | 27.7 (23.86–31.55) | 7 (100%) | 31.81 (28.09–34.53) | 7 (100%) | 30.82 (26.71–35.82) | 0.66 |
1 The relative abundance (%) of each bacterial genus is expressed as the median and the interquartile range. 2 Kruskal–Wallis rank tests.