High-Throughput Microfiltration Membranes with Natural Biofouling Reducer Agent for Food Processing

Panggulu Utoro,Nimatul Izza,Yusuf Wibisono,Shinta Dewi,Sandra Sandra,Agung Sukoyo

doi:10.3390/pr7010001

Abstract

The effect of natural antibiotics Moringa oleifera seeds powder in cellulose acetate membranes as biofouling reducer agent was investigated. Mixed matrix membranes (MMM) were synthesized by adding 100 mesh M. oleifera seeds powder with variation of three concentrations (1 wt%, 2 wt%, and 3 wt%), into a mix polymer solution of CA (cellulose acetate) and two different solvents, i.e., DMF (dimethylformamide) and DMAc (dimethylacetamide). The synthesized membranes morphology was observed under scanning electron microscopy and from the images can be seen that the membranes made of DMAc formed rather large macrovoid as compared to DMF-based membranes. The microstructure affected the water flux through the membranes, in which the DMAc membranes provided a higher flux value and served as high-throughput microfiltration membranes. Antibacterial properties of MMM were tested using Escherichia coli adhesion onto membrane surfaces. The results showed that M. oleifera has been proven to eradicate E. coli activity on the membrane surfaces due to interaction between bacterial cells and phenolic compounds from M. oleifera, through absorption processes involving hydrogen bonds.

Highlights

Membrane filtration is a promising technology for the separation of subtances, whether for aqueous or gas separation application [1]
Because the phenolic substances are recognized as promoting anti-bacterial activity, the M. oleifera seeds powder was characterized using a Fourier-transform infrared spectroscopy (FT-IR) Shimadzu 8400S (Shimadzu Corp., Kyoto, Japan) to investigate its phenolic contents
The results show that the interaction of Cellulose acetate (CA) with DMAc solvent is more effective than with DMF solvent oleifera seeds powder have been synthesized

Summary

Introduction

Membrane filtration is a promising technology for the separation of subtances, whether for aqueous or gas separation application [1]. Microfiltration and ultrafiltration, for instance, are widely used for food processing and separation of macromolecules, such as for fruit juice clarification. Fruit juice clarification processes aiming at reducing the dissolved solids in the fluid, and it is able to produce clearer juice or liquid. Application of membrane filtration for food processing, suffered by deposited particles, either organic, inorganic, or biological substances, on the membrane surface, called fouling. Several attempts existed for controlling fouling, from physical cleaning using turbulence-induced flow [5,6] to surface-engineered membranes or feed spacers [7]

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Results

Conclusion