The trunk bark of Tabebuia caraiba Bignoniaceae was found to contain four novel iridoids, 6-O-E-p-coumaroyljioglutin D (2), 6-O-E-p-coumaroyl-3-demethyl-3-O-ethyljioglutin D (3), 6-O-E-p-coumaroyl-1-demethyl-1-O-ethyljioglutin D (4), 7-O-E-p-coumaroyljiofuranaldehyde (5), three known iridoids,...

The biodegradation of wood and wood products caused by fungi is recognized as one of the most significant problems worldwide. To extend the service life of wood products, wood is treated with preservatives, often with inorganic compounds or synthetic pesticides that have a negative impact on the...

Natural dyes (ND) are gaining increasing interest due to their outstanding merits of being eco-friendly, biodegradable and non-toxic. Wood dyed with extracts from Dalbergia cochinchinensis residues as ND exhibited desirable color appearance and anti-UV property, while the other potential properties ...

This study evaluated how Eucalyptus physiological disorder (EPD) affects wood quality and pulping performance. Although research advances have been made in forest management and tree improvement programs for eucalypt plantations, some areas of Brazil are still subject to abiotic stress, mainly due...

In a world seeking environmentally sustainable products, bio-resources are investigated as suitable replacements to oil-derived products. Tannin extracts represent one of the most abundant phenolic resources of the earth, with more than 200,000 T/year. These extractives are constituted mainly of...

Ultraviolet (UV) light and water have negative effects on the surface appearance of heat-modified wood. Although thermally modified wood is dimensionally more stable than non-modified wood, high temperature and humidity variations may induce some shrinkage and swelling even in the case of modified...

Medicinal and aromatic plants have played an important role in the life of human beings since the day humankind are created. This plant structure has started to be used especially in the pharmaceutical industry; in the perfumery industry and in areas where health comes to the fore in parallel with...

The paper describes the structure and sorption activity of larch bark following treatment with green reagents. The aim was to obtain sorbents from larch bark by means of chemical treatment. The study compared the effect of non-toxic and low-toxic extraction agents and reagents, such as water,...

Under the 'green chemistry' concept, lignin oligomers obtained from the reductive catalytic fractionation process was utilized as the renewable polyol substitute for non-isocyanate polyurethane (NIPU) films. After fractionation and characterization, the lignin oligomers underwent oxypropylation and ...

Forest-based industries produce huge quantities of bark during their primary processing activities. In Nordic pulp and paper industries, where a wet debarking process is used for bark removal, toxic debarking water and bark press water are produced as a by-product. However, polyphenols represent an ...