…None of this is to say that blending your grapefruit will have a measurable impact on your health.
But, if you’re looking to boost nutrients, this study does show that how you process juice can have a big impact on the levels of flavonoids.
The authors of the paper tell The Salt they did not expect such a significant difference.
“Yes, I was indeed surprised and so was everyone in the lab,” Rammohan Uckoo, a researcher at the Vegetable and Fruit Improvement Center at Texas A&M, tells us by email.
So, what explains the difference? “The blended juice had the highest pulp content, which corresponds to the maximum levels of naringin,” Uckoo says.
In addition, the blended juice contained more of the fruit’s segment membranes — those white layers of papery fiber that line the outside of each segments — which have higher concentrations of flavonoids.