Typical Analysis of Chios Mastic Gum

In short: Chios mastic gum is a single-ingredient natural resin with a consistent, well-documented composition. According to the official Typical Analysis issued by the Chios Gum Mastic Growers Association, pure Chios mastiha is made up mainly of natural polymer and triterpenic acids, with heavy metals and microbiological counts kept far below food-safety limits. Masticlife powder and capsules are sourced from this same certified resin.

Typical chemical composition of Chios mastic gum

The figures below are mean values collected across different batches by the Chios Gum Mastic Growers Association, the official body overseeing production on the island of Chios.

Compound % w/w
Mastic oil (essential oil) 1 – 3%
Polymer fraction (poly-ß-myrcene, natural polymer) 25 – 30%
Total triterpenic acids 40 – 55%
– Masticadienonic acid 12 – 15%
– Isomasticadienonic acid 12 – 15%
– Oleanonic acid 6 – 8%
– Moronic acid 3 – 6%
– Masticadienolic acid 1 – 3%
– Isomasticadienolic acid 1 – 3%
– Other triterpenic acids 3 – 5%
Other compounds 20 – 25%

Microbiological analysis

Parameter Measured limit
Total count < 1,000 col/g
Yeast & moulds < 10 col/g
Coliform < 10 col/g
E. coli < 10 col/g
Salmonella Absent in 100 g

Heavy metals analysis

Heavy metal Measured limit
Cadmium < 0.05 mg/kg
Lead < 0.3 mg/kg
Mercury < 0.05 mg/kg
Arsenic < 0.05 mg/kg

Official certificate

This Typical Analysis is issued by the Chios Gum Mastic Growers Association. View or download the original document below.

View analysis (PDF)

Frequently asked questions

What is Chios mastic gum made of?

Per the official Typical Analysis, pure Chios mastiha consists mainly of a natural polymer fraction (25–30%) and triterpenic acids (40–55%), with a small amount of essential mastic oil (1–3%) and other natural compounds (20–25%). Nothing is added — it's the resin exactly as it hardens on the tree.

Is Chios mastic gum tested for heavy metals and microbiological safety?

Yes. The official analysis confirms cadmium, lead, mercury and arsenic all fall well within safe food limits, and microbiological counts (total count, yeast & moulds, coliform, E. coli, salmonella) meet food-safety standards, with salmonella absent.

Does the composition vary between batches?

As a natural resin, mastic composition varies slightly from harvest to harvest. The figures above are mean values collected across multiple batches, giving a reliable picture of what to expect in every shipment.

Are Masticlife products made from this same mastic?

Yes. Masticlife tears, powder and capsules are sourced from certified Chios mastic gum matching this Typical Analysis. Always check the individual product page for the full ingredient list.

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