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Plant

Goji

Lycium barbarum

Also known as: Lycium barbarum, Lycium chinense, wolfberry, gǒuqǐ, 枸杞

A small deciduous nightshade-family shrub native to north-central China, cultivated for at least two thousand years in the river valleys of Ningxia and adjacent regions for its small red sweet-tart berries. Central to traditional Chinese medicine and pharmacopeia (where the berry is *gǒuqǐzǐ*, the root bark *dìgǔpí*), used in soups, teas, and tonics, and given as a longevity food. Ningxia goji has Chinese geographical-indication protection. Global marketing as a 'superfood' from the 2000s onward drove a large export market and substantial expansion of cultivation.

Scientific

Lycium barbarum and the closely related Lycium chinense are in family Solanaceae (the nightshade family). Both are deciduous shrubs 1–3 m tall with arching thorny branches, narrow alternate or fascicled leaves, small purple to lavender flowers, and small (1–2 cm) bright-red elongated berries containing 10–60 small flat yellow seeds. The two species are often used interchangeably in commerce and in Chinese medicine; L. barbarum is more commercially cultivated, L. chinense often called Chinese wolfberry. Both tolerate alkaline and saline soils — important to their fit in the Yellow River loess plateau and Ningxia growing region.

The berries contain a distinctive set of polysaccharides (LBPs, Lycium barbarum polysaccharides), carotenoids (especially zeaxanthin, which colors the berry and is associated with eye-health claims), and a wide range of antioxidants. Many of the health claims associated with goji in modern Western marketing have been subjected to clinical trials with mixed results; the strongest evidence is for the zeaxanthin and eye-health link.

Cultural

Goji has at least two millennia of cultivation in north-central China. Ningxia gǒuqǐ (Ningxia goji) holds Chinese national geographical-indication protection — the Yellow River loess soils, alkaline groundwater, dry summers with intense sun, and cold winters of Ningxia produce a recognizable premium grade. The berry appears in classical Chinese medical texts (the Shennong Ben Cao Jing, ca. 200 BCE) as a tonic for the kidneys, liver, and eyes, and remains a routine ingredient in Chinese soups (chicken goji-berry soup), congee, tea, and the herbal medicine prescriptions of contemporary practitioners.

Global Western marketing as a “superfood” took off in the early 2000s, driving substantial export demand from China and some commercial cultivation in Canada, the U.S., and Europe. The market has matured but goji remains a recognized health-food ingredient internationally.

Global production

China is by far the dominant producer (>95% of global output). Within China, Ningxia, Qinghai, Gansu, and Inner Mongolia are the leading regions. Limited commercial cultivation exists in Canada, the U.S. (Pacific Northwest, Colorado), the UK, and parts of Eastern Europe.

See also

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  • Shares approach with: [[tomato]] · [[pepper]]
  • Member of: [[plants]]

Sources

  • Chinese Ministry of Agriculture — Ningxia GI registration
  • USDA Agricultural Research Service — Lycium species
  • Wikipedia — Goji

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