We looked at this, as did Tucson. Basic fact - only a small percentage
of beekeepers with CCD fed HFC. There were occasional beekeepers with bad
syrup - some from a distributor, others from bad handling and storage
practices. Certainly wouldn't help, but its not the cause of CCD.
If you use HFC, don't store in tanks in sun, don't pour good syrup on top
of rancid syrup, don't mix or hold in steel tanks, and lastly, don't heat
your syrup to make it pour faster. Metal and heat drive the reaction that
forms HMF.
Jerry
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