常见问题

What is the minimum Soluble Solids Content (SS/Brix) required for High Methoxyl (HM) Pectin to form a gel?

High Methoxyl (HM) Pectin requires a minimum Soluble Solids Content (SSC) of 55% Brix (optimally 65% or higher) and an acidic environment between pH 2.8 and 3.5 to form a gel.

HM pectin relies on hydrophobic interactions and hydrogen bonding to form a gel network. Sucrose/sugar acts as a dehydrating agent that competes for water molecules, allowing the pectin chains to come together. If your sugar solids drop below 55% Brix, the pectin molecules will remain fully hydrated and will fail to form a stable gel matrix, regardless of how much pectin or acid is added.