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New Zealand Journal of Forestry Science

Table 3 Yield of extract from the inner five annual heartwood rings from Tree A and the inner seven annual heartwood rings from Trees B-V. Given values are the averages of duplicate extractions

From: The chemistry and bioactivity of various heartwood extracts from redwood (Sequoia sempervirens) against two species of fungi

Solvent

Extract (%) of dry wood

 

Inner heartwood of Tree A

Heartwood of Trees B to V; min – max. (mean in brackets)

Water

5.2

 

Ethanol

6.4

5.4 – 12.8 (8.9)

Ethanol → Ethyl acetate1

3.5

 

Acetone

3.7

1.4 - 5.1 (2.6)

Ethyl acetate

1.4

 

Dichloromethane

0.6

 
  1. 1Ethanol → Ethyl acetate: ethyl acetate soluble fraction of the ethanol extract.
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