Table 1.

HHP treatments on mutation of A. tumefaciens.

Mutation	No. of strains  (N)	Positive mutant  (r  %)	Specific CoQ10 content  (mg/g DCW)	Improvement  (r  %)
400 Mpa/10 min	56	5	1.645	8.4
250 Mpa/20 min	80	10	1.690	11.3
200 Mpa/30 min	78	16	1.784	17.5