Blood Without Fear, thanks limes and lemons

Some slightly random information from 2001. Scientists figure out how to purify all blood, using psoralens (SOAR-uh-linz), chemical compounds commonly found in fruits and vegetables, including figs, turnips, and citrus fruits/

On a bench top in hematologist Larry Corash's lab sits a white plastic box 31/2 feet long and 1 foot high, sporting a control panel and a computer screen. Corash slides a tray out of the box, lays two plastic bags of blood plasma on it, closes the tray, hits a button, and waits. In just three minutes the box hands him the purest plasma on Earth. Every blood-borne disease-causing virus and bacterium lurking in it has been destroyed. "The bugs," as Corash calls them, are dead. Discover Magazine 2001

Yes, naturally occurring compounds in fruits and veggies can purify blood.  They also can purify water.