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Application of High Pressure Processing on Fast-growing Chinese Fir

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2016 ASABE Annual International Meeting  162457275.(doi:10.13031/aim.20162457275)
Authors:   Wei Sun, Jianping Li, Yong Yu, Songming Zhu
Keywords:   High pressure processing, wood process, Chinese fir, physical properties.

Abstract. Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is a fast-growing timber species that has a very wide distribution in China. However most of Chinese fir is still limited utilization because of its relatively poor physical and mechanical properties. Also, it is manually barked resulting in low efficiency. In this paper, a new method based on high pressure processing (HPP) at room temperature for barking and densification of fast-growing Chinese fir log was studied at pressure level from 0.1 to 400 MPa and pressure holding time from 0 to10 min. The results revealed that (1) the HPP can be used as a pre-treatment technique for barking of Chinese fir log, pressure level of 100 MPa with a holding time of 5 min was an appropriate processing parameter; (2) the high-pressure compression process caused significant increases in density (from 0.36 g/cm3 to more than 0.80 g/cm3) as well as physical and mechanical properties of Chinese fir. The HPP is a potential new technique of wood processing.

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