Bergamot oil

Definition and stakes

1911 Encyclopædia Britannica (1910)

“ The tree is cultivated in southern Calabria, whence the entire supply of bergamot oil is drawn. Machinery is mostly used to express the oil from the fruit, which is gathered in November and December. The oil, which on standing deposits a stearoptene, bergamot camphor or bergaptene, is a limpid greenish-yellow fluid of a specific gravity of 0·882 to 0·886, and its powerful but pleasant odour is mainly due to the presence of linalyl acetate, or bergamiol, which can be artificially prepared by heating linalol with acetic anhydride. The chief use of bergamot oil is in perfumery. ”
Source: Wikisource

C. Deite,  A Practical Treatise on the Manufacture of Perfumery

“ The oil is soluble in all proportions in 95 per cent. alcohol, also in ether and petroleum benzine. Its chief use is for the preparation of bay-rum.
Bergamot oil is obtained from the rinds of the fruit of citrus bergamia, a tree belonging to the natural order Aurantiaceæ. The rind is grated and the oil running off separated from the aqueous fluid and cellular substance by means of a separating funnel, or the grated mass is distilled in a current of carbonic acid. The oil is very fluid and pale yellow, but poorer qualities are frequently greenish or brownish.
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Source: Gutenberg

C. Deite,  A Practical Treatise on the Manufacture of Perfumery

“ When distilled with water it becomes perfectly colorless, but is less durable. Its odor is very pleasant, somewhat like a mixture of orange and lemon oils. Its specific gravity is 0.87 to 0.89. By standing for some time, the oil separates white crystalline scales (stearoptene) , which melt at 223° F. The oil becomes solid a few degrees below the freezing point. The Messina oil of bergamot is considered the best. From other volatile oils of the orange family, bergamot oil differs in dissolving readily in caustic potash, forming a clear solution. ”
Source: Gutenberg

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