A pectic enzyme treated pectin and a method of producing the same are disclosed. Citrus pectin solution is subjected to an enzymatic hydrolysis by using a mixed pectinase solution under an acidic condition, so as to obtain completely hydrolyzed pectin. The enzyme treated pectin has several biological functions, including stability of emulsification, anti-oxidation and inhibition of cancer cell growth, thereby being applied on food emulsion stabilizers, food antioxidants and compositions for inhibiting cancer cell growth and so on.本發明是揭露一種酵素修飾性果膠及其製造方法,其係利用酵素混合液於酸性環境下處理柑橘類果膠水溶液,以獲得完全水解之酵素修飾性果膠,其中所得之酵素修飾性果膠具有乳化穩定、抗氧化、以及抑制癌細胞生長等生物活性,可應用於食品用乳化穩定劑、食品用抗氧化劑、抑制癌細胞生長之組成物等。