From [2]:
"Divisions may detain, without physical examination, the specified products from the firms listed in the Red List of this import alert."
Presumably they're not detaining every batch?
The fact that the import alert has been in place for 7 years suggests -- unless there's further clarifying data about numbers of stops and such -- that it's still a problem, that fake "honey" is being imported?
Per [3], https://www.ncbi.nlm.nih.gov/pubmed/17386484 "Study and validity of 13C stable carbon isotopic ratio analysis by mass spectrometry and 2H site-specific natural isotopic fractionation by nuclear magnetic resonance isotopic measurements to characterize and control the authenticity of honey." it looks like they use SNIF-NMR and SCIRA-MS (magnetic resonance and mass-spectroscopy) in determining authenticity of honey?
This, https://www.researchgate.net/publication/328029044_Authentic..., is quite intersting on the topic.
I wasn't prepared to spend $15 to buy AOAC Official Method 991.41 but the above ResearchGate linked study suggested "honey" could have up to 7% corn syrup and still pass that test. Later (p.8) they summarise:
>"While the study showed that some 73% of commercial honeys analysed were classified as pure according to AOAC criteria10,11,16 and previous studies8,12,13,15,17–20 it is entirely possible this overestimated the actual number of pure honeys. This is because honey is sometimes adulterated using C-3 sugars, such as those from sugar beet7. It is unfortunate that the methods used here cannot detect this form of adulteration61. Consequently, detection of adulteration of this nature remains a challenge7.In addition to C-3 sugars, other adulterants in honey are difficult to detect due to the development of new and more sophisticated practices and lack of officially accepted analytical techniques. The use of EA-IRMS (Elemental Analysis - Isotope Ratio Mass Spectrometry) is the only official detection method for addition of C-4 sugar in honey42. This study also relied on a number of AOAC criteria10,11,16 to determine if honey samples were pure. As shown in Table 1, 65% (17 of 26) of samples classified as adulterated did not meet the δ13Ch-p and the C-4 sugar criteria; 9 samples also failed to meet the relevant criterion for δ13Choney<−23.5‰10. While the C-4 sugar criterion is considered robust and has broad application, the AOAC 998.1211 method does identify that a small percentage of genuine pure honeys fall outside of the accepted criterion for non-adulterated honey (≤7%)." (ibid)