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Before you put the rhubarb leaves into the salad ... QuoteRhubarb leaves contain poisonous substances, including oxalic acid which is a nephrotoxic and corrosive acid that is present in many plants. The LD50 (median lethal dose) for pure oxalic acid in rats is about 375 mg/kg body weight,[8] or about 25 g for a 65 kg (~140 lb) human. While the oxalic acid content of rhubarb leaves can vary, a typical value is about 0.5%,[9] so a rather unlikely five kilograms of the extremely sour leaves would have to be consumed to reach an LD50 dose of oxalic acid. Cooking the leaves with soda can make them more poisonous by producing soluble oxalates.[10] However, the leaves are believed to also contain an additional, unidentified toxin,[11] which might be an anthraquinone glycoside (also known as senna glycosides).[12] In the petioles, the amount of oxalic acid is much lower, only about 2-2.5% of the total acidity.[13]The roots have been used as an aggressive laxative for over 5,000 years.[14] The roots and stems are rich in anthraquinones, such as emodin and rhein. These substances are cathartic and laxative, which explains the sporadic use of rhubarb as a slimming agent.
Rhubarb leaves contain poisonous substances, including oxalic acid which is a nephrotoxic and corrosive acid that is present in many plants. The LD50 (median lethal dose) for pure oxalic acid in rats is about 375 mg/kg body weight,[8] or about 25 g for a 65 kg (~140 lb) human. While the oxalic acid content of rhubarb leaves can vary, a typical value is about 0.5%,[9] so a rather unlikely five kilograms of the extremely sour leaves would have to be consumed to reach an LD50 dose of oxalic acid. Cooking the leaves with soda can make them more poisonous by producing soluble oxalates.[10] However, the leaves are believed to also contain an additional, unidentified toxin,[11] which might be an anthraquinone glycoside (also known as senna glycosides).[12] In the petioles, the amount of oxalic acid is much lower, only about 2-2.5% of the total acidity.[13]The roots have been used as an aggressive laxative for over 5,000 years.[14] The roots and stems are rich in anthraquinones, such as emodin and rhein. These substances are cathartic and laxative, which explains the sporadic use of rhubarb as a slimming agent.
LL spotted it as soon as I got in.... That'll sting for a bit...
After all that he fecked off back to France without touching said pears. Still, he bought me a massive piece of Roquefort so I aint complaining.
