Bananas drastically reduce flavanol absorption in smoothies — by about 84% — due to their high levels of the enzyme polyphenol oxidase (PPO). Flavanols are important for healthy aging and ...

Finally, absorbance was measured at 450 nm using an enzyme-linked immunosorbent assay (ELISA ... SCR levels were measured via the sarcosine oxidase reaction method; and serum urea nitrogen was ...