Amanatsu/Kawano natsu daidai
Scientific classification
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C. × natsudaidai
Binomial name
Citrus × natsudaidai

Amanatsu () or kawano natsu daidai (カワノナツダイダイ (川野夏橙)) is a yellow citrus fruit, a cultivar that originated as a mutation of the natsu mikan (ナツミカン (夏みかん)) or natsu daidai (ナツダイダイ (夏橙)). It was discovered in 1935 in Tsukumi, Oita Prefecture, Japan. The original natsu mikan that served as the basis for amanatsu was found in Yamaguchi Prefecture around 1700.[1]

Names

Amanatsu (甘夏) means "sweet summer" in Japanese. In Japan, the fruit is known as kawano natsu daidai (カワノナツダイダイ(川野夏橙)), but also colloquially the amanatsu, amanatsu daidai (甘夏橙), amanatsukan (甘夏柑), and amanatsu mikan (甘夏蜜柑(甘夏みかん)).

Description

Natsumikan is about the size of grapefruit and oblate in shape. The fruit contains 12 segments and about 30 seeds. The rough textured fruit is easy to peel and is commonly eaten fresh. It is also used for wide variety of products ranging from marmalades to alcoholic beverages.

Cultivation

Natsumikan is grown commercially in Japan, notably in Yamaguchi, Kumamoto and Ehime prefecture. The city of Hagi is famous for its natsumikans, particularly when used in natsumikan juice and ice cream.

Yamaguchi Prefecture takes such pride in their natsumikan industry that the typically white crash barriers of Japan were changed to a befitting orange.

Genetics

The natsumikan tree is believed to be genetically derived from the pomelo (Citrus grandis or Citrus maxima).

Medicine

Researchers found that immature natsumikan peel is beneficial for the treatment of chronic allergic dermatitis in mice.[2]

See also

References

  1. ナツミカン (in Japanese). Kotobank. Archived from the original on 6 October 2022. Retrieved 23 May 2023.
  2. Nakayama, N; Yamaura, K; Shimada, M; Ueno, K (2011). "Extract from peel of Citrus natsudaidai alleviates experimental chronic allergic dermatitis in mice". Pharmacognosy Research. 3 (3): 155–9. doi:10.4103/0974-8490.84999. PMC 3193614. PMID 22022162.

Further reading

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