While today scurvy is known to be caused by a nutritional deficiency, until the isolation of vitamin C and direct evidence of its link to scurvy in 1932, numerous theories and treatments were proposed, often on little or no experimental data.curvy can be prevented by a diet that includes certain citrus fruits such as oranges or lemons. Other sources rich in vitamin C are fruits such as blackcurrants, guava, kiwifruit, papaya, tomatoes, bell peppers, and strawberries.
Butylene glycol is used in literally thousands of skin care and personal care products. One of the reasons for such wide adoption is that this chemical is relatively cheap, and because it has such a wide variety of effects on the skin.
Propylene glycol is used as a humectant (E1520), solvent, and preservative in food and for tobacco products. It is also one of the major ingredients (30-92%), along with vegetable glycerin, of the e-liquid and cartridges used in electronic cigarettes (as well as liquid nicotine), where it is vaporized in the atomizer.t is produced on a large scale and is primarily used in the production of polymers but also sees use in food processing as the E-number E1520. The compound is sometimes called Î±-propylene glycol to distinguish it from the isomer propane-1,3-diol (Î²-propylene glycol).