it is the ascorbic or citric acid a the ascorbic comes from vitamin c or the citric acid from the fruit which gives it the sour taste
To prevent scurvy
scurvy is a lack of vitamin c so you should eat lemons, limes and Oranges to prevent it.
Lemons, limes, oranges and citrus fruits help prevent scurvy. A commonly used cure and prevention for malaria is boiled horsetail and carnuckles.
Sailors used to eat limes to prevent scurvy, they became known as Limeys.
Anything with vitamin C. The English are known as limeys because they brought large amounts of limes on board their ships, these limes had a lot of vitamin C which prevents scurvy. BTW scurvy is a vitamin deficiency, so the best treatment for any vitamin deficiency is to give the person that vitamin.
Any food that has vitamin C. Near the top of the list are citrus fruits (oranges, lemons, limes, etc.)
Limes are good for your health because they are high in vitamin C. They can also help prevent scurvy and contain folate.
When sailors went on long journies they would get scurvy from lack of vitamin C. to prevent this, they ate limes while on the ship.
Scurvy can be healed by boiling cedar to make medicine. The Aboriginals taught Jaques Cartier how to heal scurvy. The aboriginals had limes that cured scurvy. After that sea captains knew how to cure scurvy and called limes: limeys. But now in this time we call them limes.
Scurvy was often treated with the ingestion of fresh limes which were given to those people on transatlantic crossings. This is why people from USA brand people from the UK as "Limey's"
Scurvy is a disease caused by improper nutrition, namely, lack of vitamin C. Eventually, ship's captains realized that eating citrus fruits would prevent scurvy, and from then on, limes and lemons were taken on voyages. It was common to hear a land lubber call a sailor a, "limejuicer".
The Royal Navy fed it's sailors limes in the days of sail when voyages took much longer and refridgerators etc were not around to prevent scurvy.