Chunche

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Chunche: drying chambers for raisins
Inside a drying chamber

Chunche ( Uighur چۈنچە, Yengi Qünqə , Chinese  葡萄干 晾 房 , Pinyin pútáogān liàng fáng ) are the names of the characteristic dry houses for raisin production in the Chinese region of Turpan .

description

The Turpan District in Xinjiang Province is the main raisin production region in China . In this desert region, grapes are dehydrated in special drying chambers called chunches.

Chunche are buildings with a rectangular floor plan about 6 to 8 m long and 4 m wide and 3 m high. The walls are made of adobe bricks that are arranged so that there are gaps between them. As a result, the building has numerous openings on all sides through which air can flow. A shady roof completes the construction.

The sweet, seedless grapes are harvested in August and hung on long poles in the drying room. Warm, dry desert wind can blow into the chamber through the openings and gently dry out the berries. The drying temperature in these shady, airy chambers always remains below 35 ° C. The drying time would normally take 40 to 50 days, but is reduced to 15 to 20 days by chemical pretreatment of the grapes. The raisins obtained in this way are light in color, in contrast to sun-dried ones, which are dark. In this way, 120,000 tons of raisins (as of 2006) are produced annually in Turpan, which makes up 90% of the total Chinese raisin production.

literature

  1. ↑ Dorothy Fay Class: Use of Satellite Imagery to Monitor the Oasis Agriculture in the Turpan Depression, Xinjiang Uygur Autonomous Region, People's Republic of China - A Case Study . (PDF) Army Military Personnel Center, Alexandria VA, 1981.
  2. ↑ Jiangfei Meng et al .: Phenolic content and antioxidant capacity of Chinese raisins produced in Xinjiang Province . (PDF) In: Food Research International , 44.9, 2011, pp. 2830–2836.
  3. ↑ Yongju Zheng et al .: Effect of heat treatment, pH, sugar concentration, and metal ion addition on green color retention in homogenized puree of Thompson seedless grape . (PDF) In: LWT-Food Science and Technology , 55.2, 2014, pp. 595–603.
  4. ^ Abraham Inouye, Ursula Chen, Wu Bugang: China - Peoples Republic of. Raisin Annual. 2016 . (PDF) USDA Foreign Agricultural Service. Gain Report. Global Agricultural Information Network.
  5. ↑ Xiaoxu Zhang et al .: The effect of dipping pretreatment on ochratoxin A accumulation in sultanas and currants . (PDF) In: Food Science and Biotechnology , 25.3, 2016, pp. 929-934.