PROCESS OF REMOVING PECTIN FROM EXTRACTED DATE JUICE AND FILTRATION THEREOF

• Main Authors: ZSIRAI ISTVAN, GYURIS KAROLY, NAGYZSADANYI KLARA, SZAM FERENC, HIDEG MIKLOS, BURIAN LASZLO, BECSER ANDOR
• Format: Patent
• Language: Czech; English
• Published: 13.01.1999
• Edition: 6
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF SUCROSE; SEPARATION; SUGAR INDUSTRY; TRANSPORTING

Způsob spočívá v tom, že filtrace se provádí vyextrahováním rozdrcených datlí a její filtrace k získání čiré šťávy na ultrafiltračním zařízení, které pracuje při teplotě v rozmezí od 30 do 70.degree.C a za tlaku 0,1 až 1,0 MPa, přičemž hodnota selektivity použitých membrán je v rozmezí od 5.000 do 50. 000 Daltonů.ŕ In removal of pectin from extracted data juice, and filtration, without use of pectin-splitting agents or filter aids, the juice is filtered in one stage, at 0.1-1 MPa and 30-70 deg.C, in an appts. comprising ultra-filtration membranes of different materials and with cut-off limits of 5,000-50,000 Daltons, depending on the pre-treatment. Dimensioned tubes or capillaries are pref. used as the membranes, and ultrafiltration is pref. periodic and/or continuous or in one stage or cascades, according to the requirements of the complete date processing line. ADVANTAGE - Use of pectin-splitting enzymes or lime is avoided. The permeate is free from pectin and very clear, and the pectin-rich (3-5%) concentrate can be recyled or processed.