what is a natural source of salicylic acid
willow tree
title: Salicylic acid text: century pottery fragments found in east central Colorado. The Reverend Edward Stone, a vicar from Chipping Norton, Oxfordshire, England, noted in 1763 that the bark of the willow was effective in reducing a fever. The active extract of the bark, called "salicin", after the Latin name for the white willow ("Salix alba"), was isolated and named by the German chemist Johann Andreas Buchner in 1828. A larger amount of the substance was isolated in 1829 by Henri Leroux, a French pharmacist. Raffaele Piria, an Italian chemist, was able to convert the substance into a sugar and a second component, which title: Salicylic acid text: practice measurement methodology significantly reduced intra-sample measurement variability but has not yet been replicated or extended. Some results have been consistently reported. Meat, poultry, fish, eggs, oils, dairy products, sugar, cereals, and flour all have little to no salicylates. Measurable levels of salicylic acid have been found in fruits, vegetables, herbs, spices, nuts, and teas. Salicylic acid is a phenolic phytohormone and is found in plants with roles in plant growth and development, photosynthesis, transpiration, ion uptake and transport. SA is involved in endogenous signaling, mediating in plant defense against pathogens. It plays a role in the resistance to pathogens title: Salicin text: Salicin Salicin is an alcoholic β-glucoside. Salicin is produced in (and named after) willow ("Salix") bark and acts as an anti-inflammatory agent in the human body. Salicin is also commonly found in the bark of "Populus" species, and the leaves of willows and poplars. It is also found in castoreum, which was used as an analgesic, anti-inflammatory, and antipyretic. The activity of castoreum has been credited to the accumulation of salicin from willow trees in the beaver's diet, which is transformed to salicylic acid and has an action very similar to that of aspirin. Salicin was the historical origin of title: Salicylic acid text: by inducing the production of pathogenesis-related proteins. It is involved in the systemic acquired resistance in which a pathogenic attack on one part of the plant induces resistance in other parts. The signal can also move to nearby plants by salicylic acid being converted to the volatile ester methyl salicylate. Salicylic acid Salicylic acid (from Latin "salix", "willow tree") is a lipophilic monohydroxybenzoic acid, a type of phenolic acid, and a beta hydroxy acid (BHA). It has the formula CHO. This colorless crystalline organic acid is widely used in organic synthesis and functions as a plant hormone. It is derived title: Abietic acid text: Abietic acid Abietic acid (also known as "abietinic acid" or "sylvic acid") is an organic compound that occurs widely in trees. It is the primary component of resin acid, is the primary irritant in pine wood and resin, isolated from rosin (via isomerization) and is the most abundant of several closely related organic acids that constitute most of rosin, the solid portion of the oleoresin of coniferous trees. Its ester or salt is called an "abietate". Abietic acid is extracted from tree rosin. The pure material is a colorless solid, but commercial samples are usually a glassy or partly crystalline