Merbau (Intsia spp.) heartwood is a highly valued commercial wood but has problems with extractive bleeding when used as a construction material outdoors. The metal complexation method is one solution to resolve this problem. However, properties of merbau heartwood extracts would be modified and...

The heartwood of Taiwania (Taiwania cryptomerioides Hayata) has the excellent decay resistance and fascinating color qualities due to the accumulation of bioactive compounds. However, limited information was addressed to the heartwood formation of this species. In this study, we established the...

Chamaecyparis formosensis Matsumura and C. obtusa var. formosana (Hayata) Rehder are important, precious, and well-known species grown in Asia. Renowned for excellent natural durability, their wood logs are regularly used as quality building materials or furniture. However, these two species have...

Reactive oxygen species- (ROS) induced oxidation stress is a key cause of human health problems. Studies have shown that many diseases, such as Alzheimer's disease, Parkinson's disease, diabetes, carcinogenesis and inflammatory diseases, are associated with ROS. Plant polyphenols have the ability...

In this study, oriented bamboo scrimber board (OBSB) was manufactured with a synthesized formaldehyde-free tannin adhesive. The chemical properties of the tannin adhesive were analyzed with ¹³C nuclear magnetic resonance spectroscopy (¹³C-NMR) and diffuse reflectance infrared Fourier transform...

Volatile aroma compounds in Dendrocalamus latiflorus shoots were extracted using solid-phase microextraction (SPME) and then heated at various temperatures and for various durations. Gas chromatography-mass spectrometry (GC-MS) analyses showed that frozen D. latiflorus shoots at ambient temperature ...

Flavonoids are secondary metabolites with abilities to reduce the thermal- and photoinduced degradation of polymeric materials. Previous studies indicated that the flavonoids in Acacia confusa heartwood had photostabilities that can reduce the photoinduced degradation of lignin in wood. Hence, the...

Previous studies have clearly demonstrated that the polyphenols of the ethyl acetate (EtOAc) fraction in the heartwood extract from Acacia confusa (AcHWE) had good photostabilities to prevent photodegradation of wood. The wood photostabilizing actions of condensed tannins and flavonoids from the...

The aim of this study was to evaluate the antioxidant activities of essential oil and various solvent-soluble extracts from twigs of Zelkova serrata. Results demonstrated that the acetone extract possessed the great free radical scavenging activities, trolox equivalent antioxidant capacity (TEAC)...

Compared to toxic and carcinogenic synthetic photostabilizers, application of plant phenolics as natural photostabilizers is more environmentally friendly. Previous works demonstrated the heartwood extract (HWE) of Acacia confusa has the potential to be a natural wood photostabilizer. However, its...