Manuka honey is becoming ever more fashionable, and supply and demand means that it’s becoming ever more pricy, too. That means that you want and deserve assurances of purity and quality when you buy manuka honey. The New Zealand Unique Manuka Factor Association (UMFHA) is the only certifying agency for manuka honey. As shown on the UMFHA website, the Association has developed stringent procedures for the certification of UMF® manuka honeys. Unfortunately, there are shady companies that try to get around certification procedures, adulterating manuka honey. You’ve seen it in the headlines, and it might have made you uncertain. Certification is essential for your peace of mind as a consumer, and it is essential that certification of manuka honey continues to be completely trustworthy. Because of this, it is crucial to support the development of new scientifically reliable markers of purity.
The Manuka ID Project is a global research effort that seeks to identify reliable markers of manuka purity. As part of this project, the group headed by Professor Yoji Kato of Hyogo University in Japan has identified Leptosperin, a compound that appears to be unique to New Zealand Manuka flowers. Leptosperin is now a top candidate for an authenticity marker for several good reasons:
- It is abundant in manuka honey, and therefore easy to test.
- It is stable over time.
- It is difficult to synthesize, so nobody can just make it and add it to honey.
Professor Kato’s group has published an article in the Journal of Agricultural and Food Chemistry detailing the potential value of Leptosperin for authenticating manuka honey.
Interestingly, but not surprisingly, samples of certified manuka honeys showed an excellent correlation between grades and Leptosperin values. A brand of non-certified honey tested in the study showed significant variability among samples. Dr. Kato concluded that “certification is clearly required to protect consumers from disguised and/or low-quality honey.”
At Koru Naturals, we are committed to your protection. You can always be confident when you order from us.
Photo by Sage Ross, shared under Creative Commons licensing via Wikimedia