Figure 1From: The chemistry and bioactivity of various heartwood extracts from redwood (Sequoia sempervirens) against two species of fungiFT-IR spectra of extracts from the inner five annual rings of Sequoia sempervirens heartwood (Tree A) prepared using five different solvents. A: 3700 – 2700 cm−1 region. B: 1850 – 450 cm−1 region.Back to article page