202
T. Jauffrais et al.
Table 17.1 A. spinosum
concentration (cells
mL
1
), mean diameter (m), cellular volume (m
3
mL
1
), toxin content (fg
cell
1
), and cell and toxin
productivity (cells
day
1
and
g day
1
respectively) at the different dilution rate studied (0.15, 0.2, 0.25, 0.3 day
1
) in the two bioreactors in series (R1
and -2)
0.15 day
1
0.2 day
1
0.25 day
1
0.3 day
1
R 1
R 2
R 1
R 2
R 1
R 2
R 1
R 2
A. spinosum concentration
(cells
mL
1
)
193,000
˙
6,000
214,000
˙
3,000
194,000
˙
8,000
214,000
˙
7,000
190,000
˙
6,000
221,000
˙
5,000
187,000
˙
5,000
220,000
˙
4,000
A. spinosum mean diameter
(m)
9.59
˙ 0.15
9.90
˙ 0.16
9.63
˙ 0.23
10.11
˙ 0.18 9.29
˙ 0.09
9.93
˙ 0.04
9.48
˙ 0.12
10.02
˙ 0.05
A. spinosum cellular
volume
(10
7
m
3
mL
1
)
9
˙ 0.4
11
˙ 0.4
9
˙0.6
12
˙ 0.7
8
˙ 0.3
12
˙ 0.2
8
˙ 0.1
12
˙ 0.4
AZA1
(fg
cell
1
)
5 2
˙ 6
7 4˙ 4
3 4˙ 12
76
˙ 14
26
˙ 2
6 1˙ 3
1 7˙ 1
4 5˙ 3
AZA2
(fg
cell
1
)
1 5
˙ 1
2 4˙ 2
1 0˙ 2
1 9˙ 2
1 2˙ 2
2 5˙ 2
7˙ 1
1 8
˙ 2
AZAs
(fg
cell
1
)
6 7
˙ 3
9 8˙ 5
4 4˙ 13
95
˙ 16
38
˙ 2
8 6˙ 3
2 4˙ 1
6 3˙ 5
Cell productivity
(10
9
cells
day
1
)
2.90
˙ 0.09
3.21
˙ 0.05
3.90
˙ 0.16
4.28
˙ 0.14
4.75
˙ 0.15
5.53
˙ 0.13
5.61
˙ 0.15
6.60
˙ 0.12
Toxin productivity
AZA1
C AZA2
(g
day
1
)
193
˙ 9
314
˙ 15
170
˙ 50
406
˙ 64
180
˙ 10
475
˙ 17
134
˙ 5
415
˙ 33