Abstract: The present disclosure is concerned with negatively charged filtration membranes and methods of making and using same, for example, in the concentration and/or filtration of dairy products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Disclosed herein are compositions comprising a polyene compound and an additive selected from the group consisting of antioxidant, surfactant, oil, wax, solvent, and a combination thereof. Also disclosed herein are methods of temporarily marking a surface comprising marking the surface with a composition as disclosed herein, where the marking has a color intensity; and exposing the surface to ambient light and ambient air, whereby the color intensity of the marking decreases over a period of time. Further, disclosed herein are markers comprising a composition as disclosed herein.