Clarification of red grape juice by amine-functionalized magnesium silica aerogel.

The clarification conditions and the selection of the clarification agent are pivotal in eliminating the haze components from red grape juice (RGJ) while minimizing the loss of functional color components. In this context, we synthesized a water glass-based APTES functionalized magnesium silica aerogel (MSA-NH) incorporating 61.44 molecules/nm of amine groups, resulting in a positively charged zeta potential value of 33.