Table 2 Relative abundance of dominant phyla in 6 different studies.
From: Composition of gut microbiota in infants in China and global comparison
Country | Sample | DNA extraction | Average Tag/reads per sample | Platform | Technology | Microbial composition (phylum level) | ||||
|---|---|---|---|---|---|---|---|---|---|---|
Proteobacteria | Firmicutes | Bacteroidetes | Actinobacteria | Others | ||||||
Chinese | 14 samples: 1–3 month | phenol/chloroform | 6,345 | 454 | 16S V3–V5 | 42.9 | 46.5 | 8.8 | 1.7 | 0.1 |
Canada12 | 24 samples: 3–4 month | FastPrep DNA for Soil Kit | 8,6022 | Illumina | 16S V5–V7 | 7.4 | 43.8 | 0 | 36.4 | 12.4 |
Brazilian22 | 10 samples: 3 month | QIAamp DNA StoolMini-Kit | 2,294 | GE Healthcare | 16S full length | 51 | 29.8 | 0.3 | 9.7 | 9.2 |
Bangladeshi6 | 108 samples: 1–3 month | bead-beating in phenol/chloroform | 21,218 | Illumina MiSeq platform | 16S V4 | 27.1 | 33.6 | 26.5 | 5.8 | 7 |
Sweden23 | 24 samples: 3 month | FastDNA SPIN Kit for Soil | 2,129 | Not mentioned | 16S V3–V4 | 13.7 | 33.2 | 23.9 | 28.1 | 1.1 |
American24 | 22 samples: 1–3 month | bead-beating in phenol/chloroform | 140,274 | Illumina | 16S V4 | 9.1 | 27.5 | 12.6 | 49.2 | 1.6 |
