Researchers at SVYASA, Bangalore tested five pyramid enclosure designs against an open-air control on bacterial growth in fresh cow’s milk over 7 days. Each pyramid was placed in a separate fumigated room; milk samples (50 ml) were positioned directly below the pyramid apex. Staphylococci, Bacillus, and Corynebacteria colony counts were taken daily from stained glass slides. Three independent trials were run and averaged.
The most striking result was that two of the larger fiberglass pyramids — FGP2 (square base, 273mm × 178mm) and FGO (octagonal base, 114mm × 190mm) — produced zero microbial growth across all three organisms for all seven days. Their milk samples remained milky, sweet-smelling, fully liquid, and pH-stable (7.50→7.00) while control and plywood samples heavily curdled, emitted foul odour, and dropped to pH 6.50. The smaller fiberglass pyramid FGP1 (241mm × 152mm, same material) showed statistically significant growth reduction versus control but still exhibited ongoing growth — suggesting a minimum size or volume threshold below which the inhibitory effect is absent.
The inhibition was conditional, not destructive: samples withdrawn from FGP2 and FGO decayed normally upon open-air exposure, confirming the bacteria remained viable throughout.
This is more methodologically rigorous than the Golod-attributed food preservation claims in DeSalvo (2003) — it has actual daily colony counts, t-tests, and three replicates. The size-dependent pattern across fiberglass models is the finding most resistant to simple thermal confound.
Vault reference: [[Paper - Kumar Swamy Nagendra - Effect of Pyramids on Microorganisms 2005]] in the Energetic Agriculture vault.