The belly book, or Diner's guide / [Christian Louis Leipoldt].

  • C. Louis Leipoldt
Date:
[1936]
Catalogue details

Licence: In copyright

Credit: The belly book, or Diner's guide / [Christian Louis Leipoldt]. Source: Wellcome Collection.

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    fats and oils are rich sources of the vitamin, which is also present in the yolk of eggs and to a less extent in butter and milk-fat, especially that of summer-milk. Vitamin B is now known to be a “ complex ” of several factors, at least four and probably six or seven. Vitamin Bx is essential for the maintenance of healthy nerve-endings and appears to be closely connected with the proper use of food carbohydrates. In its absence beri-beri develops. The composition of vitamin Bx has now been fully worked out and its synthesis has just been achieved. It appears to be a nitrogenous compound—justifying Funk’s original term of “ wit-amine ”—and is the only vitamin known to contain sulphur in the molecule. The other vitamins of the B “ complex ” are less well characterised, but one, called lacto-flavin, a water-soluble highly fluorescent dye-stuff occurring in milk, liver, malt extract, kidney and other natural sources, has been fully synthesised from inactive substances. Of vitamins B2, B3, B4, B5 and B6, our chemical knowledge is still far from complete. The chief natural sources of the vitamins in this group are the germs or embryos of cereals (wheat- germ, rice-polishings), yeast and liver. Vitamin C, the anti-scorbutic vitamin responsible for the prevention of scurvy and probably involved in the maintenance of healthy blood-vessels, is a simple substance, closely related to the sugars, with the formula C6H806. It was the first vitamin to be completely synthesised and can now be bought
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