title: An Efficient, Robust, and Inexpensive Grinding Device for Herbal Samples like Cinchona Bark.
abstract: An effective, robust, and inexpensive grinding device for the grinding of herb samples like bark and roots was developed by rebuilding a commercially available coffee grinder. The grinder was constructed to be able to provide various particle sizes, to be easy to clean, and to have a minimum of dead volume. The recovery of the sample when grinding as little as 50 mg of crude Cinchona bark was about 60%. Grinding is performed in seconds with no rise in temperature, and the grinder is easily disassembled to be cleaned. The influence of the particle size of the obtained powders on the recovery of analytes in extracts of Cinchona bark was investigated using HPLC.
authors.affiliation: Analytical Biosciences, Dept. of Pharmacy, Fac. of Health and Med. Sci., Univ. of Copenhagen, Denmark.
authors.forename: Steen Honoré
authors.initials: SH
authors.lastname: Hansen
authors.affiliation: Analytical Biosciences, Dept. of Pharmacy, Fac. of Health and Med. Sci., Univ. of Copenhagen, Denmark.
authors.forename: Else
authors.initials: E
authors.lastname: Holmfred
authors.affiliation: Analytical Biosciences, Dept. of Pharmacy, Fac. of Health and Med. Sci., Univ. of Copenhagen, Denmark.
authors.forename: Claus
authors.initials: C
authors.lastname: Cornett
authors.affiliation: Natural History Museum of Denmark, University of Copenhagen, Denmark.
authors.forename: Carla
authors.initials: C
authors.lastname: Maldonado
authors.affiliation: Natural History Museum of Denmark, University of Copenhagen, Denmark.
authors.forename: Nina
authors.initials: N
authors.lastname: Rønsted
keywords: Bark and root; Cinchona bark; Grinding; HPLC
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