An alternative or older name for the gum or thickening substance extracted from carrageen seaweed.
A variant spelling of 'carrageenan' using an older chemical nomenclature ending in '-in' instead of '-an', common in late 19th and early 20th-century scientific texts.
Carrageenin is essentially the same thing as carrageenan, but the name change shows how chemistry naming conventions evolved over time—scientists kept finding better ways to name compounds based on their structure.
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