Shiitake (Lentinula edodes) cultivation in sawdust media consisting of kunugi (Quercus acutissima) mixed with sugi (Cryptomeria japonica): optimization of gaseous phase rate in media by three-phase-structure analysis

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 1 Physical properties of HSM, kunugi and sugi

Physical property	HSM^a	kunugi	sugi^b
Specific gravity^c	0.52 ± 0.02	0.64 ± 0.02***	0.33 ± 0.03
Porosity (%)^d	65.3 ± 1.26	57.2 ± 1.27***	77.8 ± 2.12
Water retention	314 ± 12.7	246 ± 41.0**	389 ± 31.6

Data indicate the mean ± standard deviation
HSM hardwood-sawdust-mixtures
Asterisks indicate a statistically significant difference between HSM and kunugi as determined by two-sided Student’s t-test. n = 5–10: *** P < 0.001, ** P < 0.01
^a Castanopsis spp. contained primarily in HSM was used in the experiment of specific gravity and porosity
^bBased on the report of Hu et al. [9]
^cSpecific gravity was measured with wood chip
^dPorosity was calculated from specific gravity