Exploring the nanofiltration mass transfer characteristic and concentrate process of procyanidins from grape juice

Abstract

In order to separate procyanidins from grape juice at room temperature, a separation prediction model was established based on nanofiltration. The mass transfer coefficient was positively correlated with the initial concentration. Nanofiltration performance of procyanidins was affected by filtration conditions, membrane properties, and molecular states. The correlation between mass transfer coefficient and initial concentration was established based on the linear equations of the rejection and mass transfer coefficient. The rejection of procyanidins predicted with the mass transfer model was in accordance with the experimental value, and the antioxidant activity was preserved effectively. The mathematical model could predict the rejection of procyanidins. The nanofiltration technology for procyanidin separation from grape juice was characterized by fast separation, low energy consumption, and zero oxidization loss. The nanofiltration technology could greatly improve the utilization efficiency of food products and decrease the energy consumption.

Evaluation of Commercial RO Membrane for BaCl2 Separation

“…In particular, the values of the squares of the selective correlation coefficient R 2 were 0.9813, 0.9875, 0.9762, and 0.977 for concentrations 100, 200, 400, and 600 mg/l correspondingly. These values of the R 2 are close to values used in work [39] for verification of model parameters. This allows us to suggest that the experimental results are in agreement with the well-known theoretical statement (Kimura-Surirajan model).…”

Mathematical Simulation of Nanofiltration Process: State of Art Review

“…Li et al 34 used the alternative form of the equation for calculating the rejection coefficient value.…”

“…Also, this model was used for the analysis of the NF process performance in the water treatment systems [40][41][42] . The other applications include the separation of ionic solutions 33,35 , the concentration of grape juice 34 , and the performance of the ceramic membrane 43 . As in the case of reverse osmosis, this model was applied for the analysis of hybrid systems 37,41 .…”

Juice nanotechnology: A mini review

“…De-coloration of dark apple and grape juices was carried out by physical separation of melanoidins using nanofiltration membranes and the color characteristics of the only apple juice became closer to the non-browned juice [12]. Procyanidin was separated from grape juice utilizing nanofilters and the main advantages were: rapid separation, energy efficient, and with no oxidization loss [13]. The Korean dongchimi nanojuice (alternative health soft drink) was prepared via fermentation followed by nanofiltration instead of using heat treatment and the nanofiltered juice used as anti-adipogenic agent [14].…”

“…Apple and Pear higher concentration [16] Apple and Grape melanoidins separation [12] Pear enhance stability and shelf life [11] Amla improve color, clarity and valuable component. [17] Grape procyanidin separation [13] Strawberry efficient concentration with maintenance of phenolic compounds [10] Apple juice with 30% less sugar [18]…”