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Studies of the Cellular Localization of the Phenolic Pungent Principle of Ginger, Zingiber officinale Roscoe

Rafael Zarate and Michael M. Yeoman
The New Phytologist
Vol. 126, No. 2 (Feb., 1994), pp. 295-300
Published by: Wiley on behalf of the New Phytologist Trust
Stable URL: http://www.jstor.org/stable/2557952
Page Count: 6
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Studies of the Cellular Localization of the Phenolic Pungent Principle of Ginger, Zingiber officinale Roscoe
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Abstract

Examination of cryo-sections from mature rhizomes, immature rhizomes and adventitious roots of ginger, Zingiber officinale Roscoe, showed the presence of yellow-pigmented cells. There is a correlation between the number of pigmented cells and the amount of [6]-gingerol, the main pungent principle in ginger, in these organs. It is also shown histochemically and microspectrophotometrically that the yellow cells contain, in addition to flavonoid-like compounds, possibly curcumin derivatives, phenolics and large amounts of lipid material. Low-temperature scanning electron microscopy also demonstrates the oil content of these cells. Therefore, it would appear that the site of accumulation of flavonoids, curcumin derivatives, phenolics including gingerol and the essential oils of this spice lies within the same cell type.

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