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.
Other Baroque composers of toccatas, in the period before Bach, include Johann Pachelbel, Michelangelo Rossi, Johann Jakob Froberger, Jan Pieterszoon Sweelinck, Alessandro Scarlatti and Dieterich Buxtehude.