Vitamin C contributing to the more severe symptoms of scurvy. More generally, the biochemical role of vitamin C is to act as an antioxidant (a reducing agent) by donating electrons to various enzymatic and non-enzymatic reactions. Doing so converts vitamin C to an oxidized state - either as semidehydroascorbic acid or dehydroascorbic acid. These compounds can be restored to a reduced state by glutathione and NADPH-dependent enzymatic mechanisms. In plants, vitamin C is a substrate for ascorbate peroxidase. This enzyme utilizes ascorbate to neutralize toxic hydrogen peroxide (HO) by converting it to water (HO). Scurvy is a disease resulting from a deficiency
Customs and traditions of the Royal Navy by others, include "Matelot" (pronounced "matlow", and derived from mid 19th century (nautical slang): from French, variant of matenot which was also taken from the Middle Dutch mattenoot ‘bed companion’, because sailors had to share hammocks in twos, and "Limey", from the Lime-juice given to British sailors to combat scurvy - mainly redundant in use within the Royal Navy. Royal Marines are fondly known as "Bootnecks" or often just as "Royals". Uckers is a two player board game similar to Ludo that is traditionally played in the Royal Navy. It is fiercely competitive and rules differ between ships and stations