Ginger rhizomes extract

Ginger oleoresin is prepared by extracting ginger rhizomes with acetone or alcohol. The product contains the essential oil along with the substances responsible for the pungency of ginger. These compounds are substituted phenols of the following structure ... 

Kandiah, M. and Spiro, M. (1990) Extraction of ginger rhizome kinetic studies with supercritical carbondi-oxide. International Journal of Food Science and Technology 25(3), 328-338. 

Ginger Zingiber officinaie Roscoe) rhizomes extract... 

Unsteady state models for the extraction of natural products. Data on the extraction of caffeine from green coffee beans [90, 102], lignin derivatives from wood particles [77], 6-gingerol from ginger rhizome [103], aromatic hydrocarbons from soil and oil from peanuts have been modelled. The unsteady state models of Kandiah and Spiro [103] (ginger) Goto et al. [77] (wood) and Bartle et al. [104] (soil) are discussed below. 

Antidiarrheal activity. Decoction of the dried rhizome, taken orally hy children, was active. Infantile diarrhea was treated with kexieding capsule composed of 5 plant materials, including roasted ginger, clove, and fruit peel of Punica granatum. Of the 234 infants and 71 children treated, 281 (92%) were cured in 1-3 days and 9 (3%) were significantly improved. The total effective rate was 95% . Water extract of the dried rhizome, administered hy gastric intubation to mice at a dose of 0.5 mg/g, was active vs castor oil-induced diarrhea . 

Anti-rheumatic effect. Ginger oil, administered orally at a dose of 33 mg/kg to male Sprague-Dawley rats with arthritis induced in the knee and paw by injecting 0.05 mL of fine suspension of dead Mycobacterium tu-berculosis bacilli in liquid paraffin (5 mg/mL, produced a significant suppression of both paw and joint swelling . Hot water extract of the dried rhizome, administered intragastrically to female mice at a dose of 20 mg/mL, was active in influenza virus-infected animals . 

Nishimura, O. Identification of the characteristic odorants in fresh rhizomes of ginger (Zingiber officinale Roscoe) using aroma extract dilution analysis and modified multidimensional gas chromatography-mass spectroscopy. J Agr Food Chem 1995 43(11) 2941-2945. 

Liquid Carbon Dioxide Extraction. Mature ginger (Z. officinale Roscoe) rhizomes were obtained from a supplier in Hsinchu (Taiwan). The rhizomes were washed, sliced, freeze-dried, ground and sieved (200 mesh). About 110 g of freeze-dried ginger powder was placed in a glass Soxhlet extractor installed in a stainless steel liquid carbon dioxide extractor. Operating procedures were described previously (13). A golden brown oil material (3.44%) was obtained by the liquid carbon dioxide extraction. 

Ginger oleoresin was extracted from rhizomes with ethanol, isopropanol or liquid carbon dioxide. All oleoresin samples had monoter-penes and sesquiterpenes. Carboxylic acids were found in organic solvent extracts for an extraction time of 2h. The components responsible for the pungent characteristic of the oleoresin gingerols were detected in... 

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