Which of professors in ferdowsi university of mashhad worked on chitosan from 5 years ago til now?

I don’t have access to real-time databases or specific institutional records. However, to find out which professors at Ferdowsi University of Mashhad have been working on chitosan over the past five years, you can take the following steps:

**University Website**: Check the official Ferdowsi University of Mashhad website, especially the pages for relevant departments such as Chemistry, Biochemistry, or Materials Science.

**Research Publications**: Use academic databases like Google Scholar, ResearchGate, or Web of Science to search for publications from the university related to chitosan. You can filter results by year to identify recent research.

**Contact Departments**: Reach out directly to relevant departments or faculty members for information on their research focus.

**Conferences and Symposiums**: Look for conferences related to chitosan or biomaterials where faculty from the university may have presented their work.

**Patents and Projects**: Research grants or patents associated with professors in the field could also provide leads on ongoing work with chitosan.

If you have specific professors or research groups in mind, that can also help narrow your search.