Rosmarinic acid is widely distributed in plants, mainly in the labiaceae, combuliaceae, umbellifaceae, cucurbit and bassaceae, etc.

The content of rosmarinic acid in plants of different genera varies greatly. Even in the same plant, the content of rosmarinic acid in different parts is different.

For example, the content of rosmarinic acid in the leaves of Menthaspicata is only 0.009%, while the content of rosmarinic acid in the roots of Menthaspicata reaches 4.574% . In addition, the content of rosmarinic acid in the same part of the same plant varies with different harvesting periods.

For example, the content of rosmarinic acid in Rubescence harvested in early June reached 2.317%, while that in early August was only 0.827%

Rosmarinus officinalis, Melissa officinalis, Momordica balsamina, Mentha piperita, Salvia officinalis, Teucrium scorodonia, Sanicula europaea, Coleus blumei, Thymus spp., Hyptis verticillata, Lithospermum erythrorhizon and other plant spp.

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