Erratum to: Bioprocess Biosyst Eng DOI 10.1007/s00449-008-0227-3

The original version of this article unfortunately contained a mistake.

Figures 6 and 7 were identical.

The correct version of Fig. 6 is given below.

Fig. 6
figure 6

Integrated process for the production of β-glucanase in the presence of uncharged (a) and Zn+2-charged (b) freely suspended PDC metal-affinity resin presented in an internal basket (Fig. 2b) in the fermenter. (E. coli BL21(DE3) pET20-bgl-his-sec; TBG medium; medium volume 500 ml, resin volume 30 ml)