Sand Ginger

''Kaempferia galanga'', commonly known as kencur, aromatic ginger, sand ginger, cutcherry, is a monocotyledonous plant in the ginger family, and one of four plants called galangal. It is found primarily in open areas in Indonesia, southern China, Taiwan, Cambodia, and India, but is also widely cultivated throughout Southeast Asia.

Culinary and medical use

''Kaempferia galanga'' is used as a spice in cooking in Indonesia, where it is called ''kencur'' ('cekur' in Malaysia), and especially in Javanese and Balinese cuisines. ''Beras kencur'', which combines dried ''K. galanga'' powder with rice flour, is a particularly popular ''jamu'' herbal drink. Its leaves are also used in the Malay rice dish, ''nasi ulam''.

Unlike the similar ''Boesenbergia rotunda'' (Thai กระชาย ''krachai''), ''K. galanga'' is not commonly used in Thai cuisine, but can be bought as a dried rhizome or in powder form at herbal medicine stalls. It is known in Thai as ''proh horm'' (เปราะหอม) or ''waan horm'' (ว่านหอม), and in Khmer as ''prâh'' (ប្រោះ) or ''prâh krâ-oup'' (ប្រោះក្រអូប). It is also used in Chinese cooking and Chinese medicine, and is sold in Chinese groceries under the name ''sha jiang'' (), while the plant itself is referred to as ''shan nai'' ().
''Kaempferia galanga'' has a peppery camphorous taste.

Similar species

''K. galanga'' is differentiated from other galangals by the absence of stem and dark brown, rounded rhizomes, while the other varieties all have stems and pale rosebrown rhizomes. It is also sometimes called lesser galangal, which properly refers to ''Alpinia officinarum''.
* ''Alpinia galanga''
* '' Alpinia zerumbet''
* ''Curcuma longa''
* ''Etlingera elatior''
* '' Etlingera maingayi''
* '' Etlingera fulgens''
* '' Kaempferia angustifolia''
* '' Kaempferia rotunda''
* ''Zingiber cassumunar''
* '' Zingiber officinale''

Chemical constituents

The rhizomes of aromatic ginger have been reported to contain cineol, borneol, 3-carene, camphene, kaempferol, kaempferide, cinnamaldehyde, p-methoxycinnamic acid, ethyl cinnamate, and ethyl p-methoxycinnamate.

Insecticidal research

Extracts of the plant kill larvae of several species of mosquito including some that are disease vectors. As a result of these findings, research is underway to evaluate the plant extract's use as an insect repellent, with preliminary findings suggesting it is not an irritant to the skin of rats.

Extracts and essential oils

The rhizomes of the plant, which contain essential oils, have been used in traditional Chinese medicine as a decoction or powder. Its alcoholic maceration has also been applied as liniment for rheumatism. The extract causes central nervous system depression, a decrease in motor activity, and a decrease in respiratory rate.

The decoctions and the sap of the leaves may have hallucinogenic properties, which may be due to unidentified chemical components of the plant’s essential oil fraction.

A purified extract of ''K. galanga'' and polyester-8 stabilize the UV-absorptive properties of sunscreen combinations containing avobenzone.Gonzalez A., Gaenzler F. "Photostability of sunscreen combinations containing avobenzone exposed to natural and artificial ultraviolet light." Journal of the American Academy of Dermatology 2011 64:2 SUPPL. 1 (AB30)

Aroma attributes

* Borneol
* 1,8-Cineole
* Ethyl cinnamate^,
* Ethyl p-methoxycinnamate
* Gamma-car-3-ene
* Pentadecane

See also

* Insect repellent
* Kaempferol
* Desi Sangye Gyatso
* Galangal
* '' Kaempferia rotunda''

References

External links

*

Use in Andalusian Cooking

{{Taxonbar, from=Q1113398

galanga
Flora of Asia
Medicinal plants of Asia
Plants described in 1753
Taxa named by Carl Linnaeus