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Table 2 Percentage of dominant VFAs produced in leach-bed reactors during period 1 and 2

From: Reproducible, high-yielding, biological caproate production from food waste using a single-phase anaerobic reactor system

VFA (%) Period 1 Period 2
Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Phase 6
Acetate 14.2 ± 2.7 29.0 ± 4.0 29.7 ± 6.0 28.4 ± 1.8 28.8 ± 6.7 36.5 ± 2.0 57.5 ± 8.5
Propionate 14.1 ± 13.3 4.4 ± 1.2 10.8 ± 0.7 12.1 ± 1.7 11.3 ± 1.2 13.1 ± 1.9 2.0 ± 1.3
Butyrate 51.0 ± 11.2 26.5 ± 1.1 25.0 ± 1.8 24.8 ± 3.0 45.0 ± 13.6 28.1 ± 2.0 32.8 ± 3.3
Caproate 11.7 ± 8.6 38.3 ± 4.3 27.2 ± 2.6 29.7 ± 0.4 13.4 ± 5.8 6.7 ± 3.1 NA
  1. NA not available because value was below detection limit
  2. All values show standard deviation with n = 3