Variability in southern yellow pine bark from industrial sources
Abstract
Bark utilization requires the development of quality control protocols to assess variability and predict product yields. Southern yellow pine (SYP) bark samples from two industrial sources were separated into inner and outer bark tissues prior to characterization. Results suggest that simple screening operations can remove much of the grit contributing to high ash contents. Differences in Klason lignin and polysaccharide values were attributed to different relative ratios of inner and outer bark tissues for the two sources of bark. Near Infrared (NIR) spectroscopy coupled with multivariate analysis was used to develop a model to predict relative amounts of inner bark and outer bark in an industrial bark sample.