Changes in the contents of oleoresin and pungent bioactive principles of Jamaican ginger (Zingiber officinale Roscoe.) during maturation.
Changes in the yields of the oleoresin and content of pungent bioactive principles: [6], [8], [10] gingerols and [6] shogaol of Jamaican ginger ( Zingiber officinale) were investigated during different stages of maturity (7-9 months). Ethanolic oleoresin extracts were prepared (95%, w/w) by cold maceration of dried ginger powder, and their percentage yields were calculated (w/w). The pungent bioactive principles in the ginger oleoresin were extracted with methanol and quantitatively analyzed by high performance liquid chromatography (HPLC). Ginger harvested at 8 months from Bourbon, Portland had the highest oleoresin yield (8.46 +/- 0.46%). [6] Gingerol was found to be the most abundant pungent bioactive principle in all the oleoresin samples investigated, with the 9 months sample from Bourbon, Portland containing the highest level (28.94 +/- 0.39%). The content of [6] gingerols was also found to be consistently high (7-9 months) in oleoresin samples from Johnson Mountain, St. Thomas (15.12 +/- 0.39 to 16.02 +/- 0.95%). The results suggest that Bourbon in Portland may be the most ideal location for cultivating ginger for high yields and quality, however, Johnson Mountain in St. Thomas could prove to be the least restrictive location, allowing for harvesting of good quality material throughout the maturity period (7-9 months).
Product Research and Development Division, Natural Products Unit, Scientific Research Council, Hope Gardens Complex, P.O. Box 350, Kingston 6, Jamaica W.I. yvonneb@src-jamaica.org
Yvonne A
YA
Bailey-Shaw
Lawrence A D
LA
Williams
Grace-Ann O
GA
Junor
Cheryl E
CE
Green
Sheridan L
SL
Hibbert
Colleen N A
CN
Salmon
Ann Marie
AM
Smith
D002396:Catechols / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D004777:Environment; D005233:Fatty Alcohols / Q000032:analysis; D020939:Zingiber officinale / Q000737:chemistry* / Q000254:growth & development*; D007563:Jamaica; D009812:Odorants / Q000032:analysis; D010936:Plant Extracts / Q000032:analysis*; D013997:Time Factors
D002396:Catechols; D005233:Fatty Alcohols; D010936:Plant Extracts; C018620:oleoresins; C040115:shogaol; C007845:gingerol