Which additive can be injected into natural wood to act as a natural fungicide?

Which additive can be injected into natural wood to act as a natural fungicide?

• A. Copper based preservatives can be injected
• B. Modified naturally occurring polysaccharides can be added to increase hardness
• C. Pigments can be added to give colour
• D. Resins may also be added to create manufactured boards

Answer: (A)

Copper-based preservatives can be injected into natural wood to act as a fungicide. The copper ions released by these preservatives are toxic to fungi, disrupting their enzymes and metabolism and preventing decay. Injecting the preservative ensures deep, even distribution throughout the wood, giving long-lasting protection, especially in damp or outdoor conditions. Other options don’t provide fungicidal protection: pigments only change colour, modified polysaccharides aim to alter mechanical properties like hardness, and resins are binders used to make manufactured boards rather than to protect wood from fungal attack.

Copper-based preservatives can be injected into natural wood to act as a fungicide. The copper ions released by these preservatives are toxic to fungi, disrupting their enzymes and metabolism and preventing decay. Injecting the preservative ensures deep, even distribution throughout the wood, giving long-lasting protection, especially in damp or outdoor conditions. Other options don’t provide fungicidal protection: pigments only change colour, modified polysaccharides aim to alter mechanical properties like hardness, and resins are binders used to make manufactured boards rather than to protect wood from fungal attack.