The book Deep Nutrition makes the following claim:
... your "100 percent orange juice" is doped with corn syrup. (Some FDA officials suspect that many fruit juices claiming to be 100 percent natural juice are in fact sweetened with high-fructose corn syrup...)
(Chapter 9, don't know page number as I'm reading it on kindle)
The author cites the paper, Observations on Economic Adulteration of High-Value Food Products1. There are a couple related mentions of orange juice in the paper (emphasis mine):
Orange juice and olive oil are food products often targeted for economic adulteration... (p. 1)
Food scientists and chemists have developed a number of tests to detect the presence of illegal ingredients in honey... Similar tests have been developed to detect adulteration in orange juice. However, tests for non-labeled ingredients often are not able to accurately detect very small amounts of such ingredients... (p. 3)
But the basis for the first claim is uncertain to me. And the second only seems to cast doubt on the claim, regardless of where it came from.
Is there any evidence that orange (or other fruit) juice marketed in the U.S. as "100% pure" may contain corn syrup, or other impurities? Or is there at least evidence that "FDA officials" suspect this?
1The book's bibliography cites "Observations on the Economic Adulteration of High Value Food Products. Fairchild GF. Journal of Food Distribution Research Vol 32 No. 2. July 2003. 38-45", however it appears that 'Vol 32' was a misprint, and 'Vol 34' is correct, as the dates match up. If I'm actually reading the wrong paper, please let me know.