What is the major characteristic of yeast in relation to isinglass?

The major characteristic of yeast in relation to isinglass lies in its negative charge. Isinglass is a form of gelatin derived from fish bladders that is commonly used as a fining agent in brewing to clarify beer. Isinglass itself carries a positive charge, which allows it to bond with negatively charged yeast particles suspended in the beer. This interaction facilitates the coagulation of yeast, making it easier for the yeast to settle out of the beer, thereby clarifying the final product.

Understanding this charge interaction is crucial in the brewing process, as it directly impacts the effectiveness of isinglass as a fining agent. The negatively charged yeast allows for efficient binding to the positively charged isinglass, leading to enhanced clarity and stability in the beer.