Physical characteristics of North American ginseng (Panax quinquefolius l.) Root
Authors: S. Sokhansanj, W.O. Bailey, YP. Ouo, K.B. van Dalfsen and A.L Oliver
Description: North American ginseng (POIIOX quinque/o/ills L.) is an imponant expon crop for Caoad.. and the USA. The plant rOOI is highly valued in lraditional Chinese medicine, Although the crop is cultivated and processed extcnsivcly, data on physical characteristics uscful for design of postharvcst systcms are scarcc. Research was initiated to examine commercially grown ginseng roots from several gardens in British Columbia. Canada. TIle roots were classiried into three shapcs "pcncil", "chunky", and "complex" and subjected to mass, diametcr nnd volume mcasuremcnts. The roots exhibitcd widc variations in mass (typicnll11ass avcragc of 20 g. C.v. 60%). dimensions (typical diamcter of 17 mm, c.v. 22%) and with the majority having "pencil" or "complex" shnpc. A gamma density function represented root mass and diamcter data. A linear relation between thc surface area and the mass of the fresh root was developed: S ::; 9.5 W + 282 (r ::; 0.45), wherc Sis thc root surface arca (111m2) and W is the mass of fresh root (g). The bulk density, cn!cul'Hed frol11mcnsured bulk volume and mass of Ihe roots, ranged from 201 10279 kg/IllJ . Using the measured bulk density and spccific density (about 1000 kg/mJ ). the porosity of bulk frcsh ginseng wascstimaled at aboul 0.80.
Citation: S. Sokhansanj, W.O. Bailey, YP. Ouo, K.B. van Dalfsen and A.L Oliver 1999. PHYSICAL CHARACTERISTICS OF 'ORTH AMERJCAN GINSENG
(PANAX QUINQUEFOLIUS L.) ROOT. Canadian Agricultural Engineering 41(4):239-246.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering