In March 2016, 289 publications about chitosan and chitosan derivative have been released. Most articles investigated chitosan nanoparticels and polymers, as well as chitosan in pharmaceutical preparations. Majority of chitosan research takes place in China (55 articles), USA (36) and India (21). Development of new scaffold materials for in vitro tissue engineering is an important topic for regenerative medicine. Biomaterial scaffolds need to be biocompatible and cell growth supportive.