13.1.4 Pectinases C-OCH3 HO 0 HO C-OH CH3OH Pectin C-OCH3 HO 2 esterase 0 OH exo-poly(methyl)- Poly- galacturonate OH galacturonase COCH3 1y83e 0 HO C-OCH3 endo-poly(methyl)- galacturonase HO- Basic structure of pectin and the sites of enzymatic hydrolysis.Pectin is a randomly methyl-esterified a-1,4 poly-galacturonic acid 13.1.5 Lipases 13.1.5 Lipases 13.1.4 Pectinases