英语词汇“Aleppo gall”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Aleppo gall

noun

A hard nut-like gall that forms on some varieties of oak in response to the developing larva of a gall wasp. It is used as a source of gallic acid and tannin. Also called nutgall.

The wasp is Cynips quercusfolii, family Cynipidae.

In that year, more than 550,000 pounds of Aleppo galls were imported from Turkey....

The main constituents of Aleppo galls are 50 to 70 per cent of gallotannic acid, 2 to 4 per cent of gallic acid, mucilage, sugar, resin and an insoluble matter called lignin.
Oak galls, primarily Aleppo galls or Mecca Galls imported from Turkey contain 50 to 70% gallotannic acid and were a major source of gallic and tannic acid used in tanning and dyeing.

单词	Aleppo gall
释义	Aleppo gall noun A hard nut-like gall that forms on some varieties of oak in response to the developing larva of a gall wasp. It is used as a source of gallic acid and tannin. Also called nutgall. The wasp is Cynips quercusfolii, family Cynipidae. In that year, more than 550,000 pounds of Aleppo galls were imported from Turkey.... The main constituents of Aleppo galls are 50 to 70 per cent of gallotannic acid, 2 to 4 per cent of gallic acid, mucilage, sugar, resin and an insoluble matter called lignin. Oak galls, primarily Aleppo galls or Mecca Galls imported from Turkey contain 50 to 70% gallotannic acid and were a major source of gallic and tannic acid used in tanning and dyeing.
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