| abstract |
This invention relates to filter membranes or coatings incorporating environmentally benign biocidal phytochemical compositions that can prevent or reduce fouling caused by microbial biofĂlms, bacteria, algae, fungi, or other unwanted fouling organisms. The invention particularly provides a phytochemical composition encompassing grapefruit seed extract, pomegranate extract, capsaicin and menthol. The phytochemical compositions may directly inhibit the growth of an invasive organism or inhibit the establishment of a biofilm substrate. Additional phytochemicals may also be used. The phytochemical compositions may be incorporated directly into the filter material, microencapsulated or be applied within a coating layer on an underlying porous filtration substrate. |