A vital part of the development of any standardized protocol for the extraction of plant-derived crude extracts to be used in herbal medicine or nutritional supplementation is proper documentation of the original botanical source of the extract via acquisition of a voucher specimen. The purpose of this document is to serve as an accepted protocol for voucher specimen collection, handling, and storage, with specific guidelines to address commercial and research uses.

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http://dx.doi.org/10.1007/s00216-007-1405-xDOI Listing

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