I was looking for the PH of saponins, which I knew could be found in desert plants, such as yucca. Saponins are useful as shampoos and detergents. Little did I know that these also have unexpected health benefits. In root beer, no less:
Yucca and quillaja extracts are used in beverages, such as root beer and slurpies, to provide the foamy "head."...The blood cholesterol-lowering properties of dietary saponins are of particular interest in human nutrition...The binding of bile acids by saponins has other important implications. Bile acids excreted in the bile are called primary bile acids. They are metabolized by bacteria in the colon, producing secondary bile acids. Some of the secondary bile acids are promoters of colon cancer. By binding to primary bile acids, saponins reduce the formation of the secondary bile acids.
All that by drinking root beer?!? Hey, now that's an idea.
Anyway, I found nothing about PH of saponins, but did find this. Interesting.
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