UMF vs MGO: Understanding Mānuka Honey Ratings

Mānuka honey is known worldwide for its distinct qualities, antibacterial properties, and health benefits. But if you’ve ever shopped for genuine Mānuka honey, you’ve likely seen terms like “UMF 10+” or “MGO 300+” on the label. These numbers are more than marketing jargon - they’re essential indicators of the honey’s quality and potency.

To make an informed decision, it’s important to understand what UMF and MGO mean, how they’re measured, and why they matter. This article provides a comprehensive explanation of both systems, explores their differences, and explains how they relate to one another.

What Is Mānuka Honey?

Mānuka honey is a monofloral honey produced in New Zealand and parts of Australia by bees that pollinate the native Leptospermum scoparium plant, commonly known as the Mānuka tree. Unlike regular honey, genuine Mānuka honey contains a naturally occurring compound called methylglyoxal (MGO), which gives it unique antibacterial properties.

Thanks to these special properties, Mānuka honey is often used to support wound healing, soothe sore throats, improve digestive health, and provide immune system support. However, the quality and effectiveness of Mānuka honey vary greatly depending on the concentration of key bioactive compounds.

This is where grading systems like UMF and MGO come into play.

What Does UMF Mean?

UMF stands for Unique Mānuka Factor. It is a quality assurance grading standard developed and managed by the UMF Honey Association (UMFHA) in New Zealand. This trademarked system ensures that consumers are buying genuine Mānuka honey with verified origin and strength.

What Does the UMF Number Represent?

The UMF grading system measures the presence and concentration of four key signature compounds:

1. Methylglyoxal (MGO) – Potency,  the primary compound responsible for antibacterial properties.

2. Leptosperin – Authenticity, a natural chemical marker unique to Mānuka nectar.

3. Dihydroxyacetone (DHA) – Shelf Life, the precursor to MGO, found in the nectar and converted during honey maturation.

4. Hydroxymethylfurfural - Freshness, ensures the Mānuka has not been over heated or stored for too long.

A higher UMF number indicates a greater concentration of these beneficial compounds and more potency. The UMF rating also guarantees that the honey has been tested, verified, and packed in New Zealand, meeting strict standards of purity and authenticity.

Examples of UMF Ratings:

• UMF 5+: Mild level of bioactive compounds. Suitable for daily use.

• UMF 10+: Moderate activity; ideal for general health support.

• UMF 15+: High to very high activity; often used for more targeted wellness purposes or topical application.

• UMF 20+ and above: Therapeutic grade Mānuka honey, rare and highly potent.

What Does MGO Mean?

MGO stands for methylglyoxal, the naturally occurring compound responsible for most of Mānuka honey’s antibacterial properties. Unlike UMF, which is a broader certification standard, MGO is a direct measurement of the methylglyoxal content in the honey.

How Is MGO Measured?

MGO content is measured in milligrams per kilogram (mg/kg) of honey. The higher the MGO number, the more methylglyoxal is present and the stronger the antibacterial properties.

Examples of MGO Ratings:

• MGO 40+: Entry-level; suitable for general well-being.

• MGO 100+ to 300+: Mid-range; provides enhanced antimicrobial strength.

• MGO 500+ to 850+: High strength; used for more targeted support.

• MGO 850+ and above: Therapeutic grade; rare and often used for intensive applications.

UMF vs MGO: Key Differences

While both UMF and MGO ratings help indicate the quality and strength of genuine Mānuka honey, they are not interchangeable. Here are the main differences:

In Summary:

• UMF is a comprehensive grading standard that ensures authenticity, purity, and more potency.

• MGO is a scientific measure of the antibacterial compound in the honey.

• UMF includes MGO, but also tests for other markers specific to genuine Mānuka honey.

UMF to MGO Conversion Chart

The UMF number corresponds approximately to an MGO level. While there is no direct formula, the following chart provides a general comparison:

Please note that these figures are approximate. Variations may occur depending on batch testing and honey source.

Which Rating System Should You Trust?

Both UMF and MGO provide valuable information. However, for consumers seeking more potency and greater confidence in authenticity and quality, UMF-certified honey offers a broader guarantee. It not only confirms the presence of methylglyoxal but also certifies the honey's New Zealand origin, purity, and other key compounds like leptosperin.

MGO-only labelling is often found on international products and provides a more accessible entry point to understanding genuine Mānuka honey's strength. However, without the accompanying assurance of authenticity, it may not provide the full picture.

If you're purchasing Mānuka honey for specific health benefits or as a therapeutic grade wellness product, a UMF-certified jar is often the better choice.

Why Do Some Brands Use Both UMF and MGO?

Some reputable Mānuka Honey brands choose to display both the UMF and MGO ratings on their packaging. This dual labelling gives customers both the scientific measurement of antibacterial properties (MGO) and the comprehensive certification of authenticity and quality (UMF grading system).

Including both values reflects transparency and allows consumers to make more informed comparisons between products. It also reassures buyers that the honey has undergone rigorous testing, both chemically and in terms of provenance.

The Importance of Traceability and Quality Control

When purchasing Mānuka honey, it's crucial to consider:

• Country of origin – Authentic Mānuka honey is almost exclusively produced in New Zealand.

• Testing and certification – Reputable honey should be independently tested in ISO-accredited labs.

• Packaging – Look for tamper-proof seals, batch numbers, and expiry dates.

• Brand reputation – Choose a company that provides transparency in sourcing and lab results.

These factors help ensure that you’re getting what you paid for - a genuine Mānuka honey product that offers the known benefits of this naturally occurring compound.

Melora’s Mānuka Honey: MGO and UMF Certified

At Melora, our commitment to quality, authenticity, and science-backed wellness means that every jar of our Mānuka honey carries both UMF and MGO certifications. This dual labelling assures customers that they are purchasing genuine Mānuka honey that has undergone comprehensive testing - not only for methylglyoxal levels but also for leptosperin, DHA, and overall purity.

Our honey is harvested and packed in New Zealand, traceable to its source, and tested by independent laboratories. Whether you are choosing Melora for everyday wellbeing or for therapeutic grade use, you can trust that each spoonful meets the highest standards of quality and integrity.

Shop MGO and UMF Certified Mānuka Honey

FAQs

What is the difference between UMF and MGO in Mānuka honey?

UMF is a trademarked grading standard that measures MGO along with other markers like leptosperin and DHA, and confirms the honey’s New Zealand origin and authenticity. MGO is a direct measure of methylglyoxal content - the naturally occurring compound responsible for antibacterial properties - but does not verify authenticity on its own.

Is higher UMF or MGO better?

A higher UMF or MGO rating generally indicates more potency and greater antibacterial strength. For general wellness, lower ratings like UMF 5+ or MGO 100+ may be sufficient. For specific or therapeutic grade uses, higher values such as UMF 15+ or MGO 525+ are recommended.

Why should I choose Mānuka honey with both UMF and MGO ratings?

Buying genuine Mānuka honey that displays both UMF and MGO ensures you’re getting verified quality and strength. The UMF grading system confirms the honey’s authenticity, New Zealand origin, and multiple bioactive compounds, while the MGO value shows its measurable antibacterial potency.