It is true that heat and acid can cause proteins to denature, which means that they lose their 3-dimensional shape. A cooked egg white that becomes opaque and solid is an example. When milk is treated with acid, the protein casein curdles into a solid and the whey separates, still liquid.
The noun TOCCATA has 1 sense: 1. a baroque musical composition (usually for a keyboard instrument) with full chords and rapid elaborate runs in a rhythmically free style. Familiarity information: TOCCATA used as a noun is very rare.
The Toccata is a a virtuosic composition with brilliant passages done in a free style. The fugue is a compilation of the same tune repeated over and over again in different voice parts and in different key signatures, eventually returning to the original key that it began in and can end in a major or minor key.