In the mid-1980s, widespread interest in research into artificial neur
al networks re-emerged following a period of reduced research funding.
The much wider availability and the increased power of computing syst
ems, together with new areas of research, is expanding the range of po
tential application. The main reason for this is that the potential to
describe the characteristics of extremely complex systems accurately
has been attributed to this methodology. This article examines the con
tribution of various network methodologies to bioprocess modelling, co
ntrol and pattern recognition. Industrial processes can benefit from t
he application of feedforward networks with sigmoidal activation funct
ions, radial basis function networks and autoassociative networks. The
contribution that neural networks can make to biochemical and microbi
ological scientific research is also reviewed briefly.