Store-bought kombucha or water kefir — 1-2.1g/100m; Sugar-free kombucha — 0g/100ml; Diet soft drink — 0g/100ml; Switchel — depends on sweetener used; ...

Commercially available ultrafiltration membranes that purify water are expensive and get clogged easily by particles and microorganisms. Recently, living filtration membranes were reported as an ...