Guides for resin and gum buyers

Each guide answers one question a buyer of these materials asks, cites its sources, and says where the published evidence stops.

The guides

What is the difference between beeyo (Boswellia carterii) and maydi (Boswellia frereana), and which should I buy?

Beeyo and maydi: Boswellia sacra and Boswellia frereana compared

Beeyo (Boswellia sacra, traded as B. carterii) and maydi (B. frereana) compared for buyers by resin, harvest, oil chemistry, uses and species checks.

How should a buyer assess gum arabic from an origin that is not established in the trade?

Gum arabic beyond Sudan: how to assess a new origin

What gum arabic is in law, the JECFA and EU limits a lot has to meet, and six steps for testing gum from an origin the trade does not yet know.

What do Somali frankincense grades mean, and how should a buyer specify one?

Somali frankincense grades explained: beeyo and maydi

How beeyo and maydi frankincense are graded, why grade names are not a standard, and how to specify a grade in an RFQ so that offers can be compared.

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