Agarose
From Genetics Wiki
Agarose, a linear polysaccharide, is made from agar by removing agaropectin. Agar is isolated from some red algae species such as Gelidium amansii and Gracilaria species.
It is used in making media for microbiology and in electrophoresis for molecular genetics.
Links
http://www.fao.org/docrep/field/009/ag156e/AG156E01.htm
http://www.fao.org/docrep/006/y4765e/y4765e05.htm
https://dlnr.hawaii.gov/hisc/info/invasive-species-profiles/gorilla-ogo/