Kaffir lime

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Citrus hystrix
Citrus hystrix dsc07772.jpg
Citrus hystrix on sale
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Sapindales
Family: Rutaceae
Genus: Citrus
Species: C. hystrix
Binomial name
Citrus hystrix
DC.[1]
Synonyms[1]

Citrus hystrix, commonly known in English as kaffir lime (/ˈkæfərˌlm/), is a fruit native to Indochinese and Malesian ecoregions in India, Nepal, Philippines, Bangladesh, Indonesia, Malaysia and Thailand, and adjacent countries. It is used in Southeast Asian cuisine.

Common names[edit]

English: kaffir lime; French:[2] citron combera, combava, citron ridé; Burmese: tau shauk hka: (တောရှောက်ခါး; pronounced: [tɔ̀.ʃaʊʔ.kʰá]); Indonesian/Malay: jeruk obat, jeruk purut, limau purut; Filipino: kabuyao or cabuyao; Khmer: krô:ch saë:ch;[2] Laos: mak khi hut (ໝາກຂີ້ຫູດ; pronounced [ma᷆ːk.kʰi᷆ː.hu᷆ːt]) ; Thai: ma krut (มะกรูด; pronounced [ma.krùːt]);[3] also known as combava, kieffer lime or makrut lime.[4]In South Indian cuisine this used widely and is known as "narthangai".

The Oxford Companion to Food (ISBN 0-19-211579-0) recommends that the name kaffir lime should be avoided in favor of makrut lime because Kaffir is an offensive term in certain cultures, and also has no clear reason for being attached to this plant. However, kaffir lime appears to be much more common.

Description[edit]

Citrus hystrix is a thorny bush, 5-10m tall, with aromatic and distinctively shaped "double" leaves. The kaffir lime is a rough, bumpy green fruit. The green lime fruit is distinguished by its bumpy exterior and its small size (approx. 4 cm (2 in) wide).

Uses[edit]

Citrus hystrix Kabuyao (Cabuyao) fruit (left), used in Southeast Asian cooking, with galangal root.
Kaffir lime leaves are used in some South East Asian cuisines such as Indonesian, Lao, Cambodian, and Thailand (มะกรูด).

Cuisine[edit]

The rind of the kaffir lime is commonly used in Lao and Thai curry paste, adding an aromatic, astringent flavor.[3] The zest of the fruit is used in creole cuisine to impart flavor in "arranged" rums in the Martinique, Réunion island and Madagascar. However, it is the hourglass-shaped leaves (comprising the leaf blade plus a flattened, leaf-like leaf-stalk or petiole) that are used most often in cooking. They can be used fresh or dried, and can be stored frozen. The leaves are widely used in Thai[3] and Lao cuisine (for dishes such as tom yum), and Cambodian cuisine (for the base paste "Krueng"). Kaffir lime leaves are used in Vietnamese cuisine with chicken to add fragrance. They are also used when steaming snails to decrease the pungent odor while cooking. The leaves are also used in Indonesian cuisine (especially Balinese cuisine and Javanese cuisine), for foods such as Soto ayam, and are used along with Indonesian bay leaf for chicken and fish. They are also found in Malaysian[5] and Burmese cuisines. The juice is generally regarded as too acidic to use in food preparation. In Cambodia, the entire fruit is crystallized/candied for eating.[2]

Medicinal[edit]

The juice and rinds are used in traditional Indonesian medicine; for this reason the fruit is referred to in Indonesia as jeruk obat ("medicine citrus"). The oil from the rind has strong insecticidal properties. In South India the lime is juiced and the rind is filled with turmeric powder and sea salt and dried under hot Sun. This is used as a accompaniment for "Kanji" when sick.

Other uses[edit]

The juice finds use as a cleanser for clothing and hair in Thailand and very occasionally in Cambodia. Lustral water mixed with slices of the fruit is used in religious ceremonies in Cambodia.

Cultivation[edit]

Citrus hystrix is grown worldwide in suitable climates as a garden shrub for home fruit production. It is well suited to container gardens and for large garden pots on patios, terraces, and in conservatories.

Main constituents[edit]

The compound responsible for the characteristic aroma was identified as (–)-(S)-citronellal, which is contained in the leaf oil up to 80%; minor components include citronellol (10%), nerol and limonene.

From a stereochemical point of view, it is remarkable that kaffir lime leaves contain only the (S) stereoisomer of citronellal, whereas its enantiomer, (+)-(R)-citronellal, is found in both lemon balm and (to a lesser degree) lemon grass, (note, however, that citronellal is only a trace component in the latter's essential oil).

Kaffir lime fruit peel contains an essential oil comparable to lime fruit peel oil; its main components are limonene and β-pinene.

See also[edit]

References[edit]

  1. ^ a b "TPL, treatment of Citrus hystrix DC.". The Plant List; Version 1. (published on the internet). Royal Botanic Gardens, Kew and the Missouri Botanical Garden. 2010. Retrieved March 9, 2013. 
  2. ^ a b c Dy Phon Pauline, 2000, Plants Used In Cambodia, printed by Imprimerie Olympic, Phnom Penh
  3. ^ a b c Loha-unchit, Kasma. "Kaffir Lime –Magrood". Retrieved 16 May 2012. 
  4. ^ GRIN . accessed 5.5.2011
  5. ^ Pocket Guide to Asian Herbs & Spices By Wendy Hutton, Alberto Cassio