title: [Liquid ginger extract: technology of production and quality evaluation].
abstract: The paper aimed to elaborate the technology of the production of a liquid ginger extract and to select and verify the methods of quality evaluation of the final preparation. The experiment revealed 70% ethanol as a suitable extraction agent. The optimal conditions for the development of an extract of good quality are established when the herbal drug is crushed to form particles passing through a sieve with a mesh size of 4000 microm, the extraction method is repercolation with the division of the charge of the drug in the relation 5:3:2, and the liquid flows from the percolator at a rate of 0.2ml/min/100 g of the drug. The presence of amino acids, saccharides, glycosides, reducing agents, phenolic substances, and alkaloids in the finished extract was demonstrated by means of colour or precipitation reactions. Thin-layer chromatography was employed to demonstrate gingerols and shogaols. Evaporation residue, ethanol concentration, and the amount of essential oils were determined quantitatively.
authors.affiliation: Veterinární a farmaceutická univerzita Brno, Farmaceutická fakulta, Ustav technologie léků. masteikovar@vfu.cz
authors.forename: R
authors.initials: R
authors.lastname: Masteiková
authors.forename: R
authors.initials: R
authors.lastname: Bernatoniené
authors.forename: A
authors.initials: A
authors.lastname: Savickas
authors.forename: Z
authors.initials: Z
authors.lastname: Chalupová
authors.forename: J
authors.initials: J
authors.lastname: Bernatoniené
mesh_terms: D002626:Chemistry, Pharmaceutical; D020939:Zingiber officinale; D010936:Plant Extracts; D028321:Plant Preparations; D010946:Plants, Medicinal
chemical_list: D010936:Plant Extracts; D028321:Plant Preparations