l malic acid/トウヒ属

This study was focused on organic acids and metals in biofluids of wood. Without seasoning, fresh woods from spruce and bark, phloem, and heartwood from pine were used as materials, which were degraded with either microbes of oyster mushroom, baker's yeast, or lactic acid bacteria. Due to neutral pH

(R, Z)-7,15-Hexadecadien-4-olide, the sex pheromone of the yellowish elongate chafer (Heptophylla picea), was synthesized from l-malic acid in 15 steps. The synthetic pheromone was identical with the natural product in its MS, IR, GLC retention time, and biological activity.

An active component of the sex pheromone system of the yellowish elongate chafer, Heptophylla picea was identified by GC-EAD. Mass spectral data and hydrogenation revealed that the active compound was a hexadecadien-4-olide. It was not possible to determine the double bond positions by direct DMDS

Despite a growing attention to the dissolved organic matter (DOM) in terrestrial ecosystems and evidence of the fact that vegetation affects the quality of both undissolved and dissolved organic matter in soil, the role of DOM as a biological indicator is still poorly understood. In this work, the