Class not held on this date

23 Novembro 2022, 09:00 • Sofia Cristina Gomes Catarino

Class not held on this date, by reasons of participation in "Fórum Anual de Vinhos de Portugal 2022"  (ViniPortugal), where a award was received by ISA's team (Prémio Distinção Enologia 2022).

Physical-chemical characterization and evolution control of the wines under students' responsibility: chromatic characteristics, total anthocyanins, degree of ionization of anthocyanins, ionized anthocyanins, total pigments, polymerization index, polymerized pigments, total phenols index, wine turbidity, fining tests.

21 Novembro 2022, 14:00 • Sofia Cristina Gomes Catarino

Physical-chemical characterization and evolution control of the wines under students' responsibility: chromatic characteristics, total anthocyanins; degree of ionization of anthocyanins, ionized anthocyanins, total pigments, polymerization index, polymerized pigments, total phenols index; wine turbidity, fining tests

Analytical methods' description. Enological interest of each analytical determination. Fining essays.

Application of these analytical methods on the wines and discussion of the results.

Application of stability tests on the wines under students' responsibility

16 Novembro 2022, 14:30 • Sofia Cristina Gomes Catarino

Application of stability tests on the wines under students' responsibility: tartrate stability, protein stability and pinking potential. Discussion of the results.

Main colloidal instabilities in wine

16 Novembro 2022, 09:00 • Sofia Cristina Gomes Catarino

Main colloidal instabilities in wine: protein turbidity, oxidative pinking, colouring matter instability; metallic hazes (copper and iron cases). Stability tests. Stabilization treatments. Wine treatment with bentonite. Arabic gum. 

Application of stability tests on the wines under students' responsibility

14 Novembro 2022, 14:00 • Sofia Cristina Gomes Catarino

Application of stability tests on the wines under students' responsibility: tartrate stability, protein stability and pinking potential. Discussion of the results.