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Clarification of Bitter Orange ( Citrus Aurantium ) Juice Using Microfiltration with Mixed Cellulose Esters Membrane
Author(s) -
Mirsaeedghazi Hossein,
EmamDjomeh Zahra
Publication year - 2017
Publication title -
journal of food processing and preservation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.511
H-Index - 48
eISSN - 1745-4549
pISSN - 0145-8892
DOI - 10.1111/jfpp.12738
Subject(s) - microfiltration , chemistry , orange juice , fouling , chromatography , polyphenol , membrane , food science , membrane fouling , permeation , ascorbic acid , turbidity , flavor , pulp and paper industry , antioxidant , organic chemistry , biochemistry , oceanography , engineering , geology
Microfiltration of bitter orange juice was performed with three levels (0.3, 0.6 and 0.9 bar) of transmembrane pressures (TMP) and three feed velocities (0.3, 0.9 and 1.2 m/s) to evaluate their effects on the resulting permeate flux, membrane fouling (using Hermia's model) and physicochemical properties of the juice during clarification. Results showed that TMP and feed velocity had important effects on the permeate flux and creation time of each fouling mechanism. The permeate flux increased while increasing of the TMP and feed velocity. Although membrane clarification decreased turbidity, acidity, ascorbic acid and total soluble solid content of bitter orange juice; its polyphenol components and antioxidant activity did not change significantly. Microfiltration eliminates more than 90% of the particles in bitter orange juice and preserves its main nutritional compounds successfully. Practical Applications Large particles in extracted bitter orange juice will be burnt on evaporator's walls during juice concentration and generate off flavor in the final product. While microfiltration of fresh juice is a suitable method to eliminate these particles and prevent unwanted off flavors during juice evaporation, fouling phenomena decreases process performance. Increasing the feed velocity in all stages of process and the transmembrane pressure in first stages of clarification treatment are two useful tools to increase process efficiency.