para aminobenzoic acid


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Related to para aminobenzoic acid: inositol
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Noun1.para aminobenzoic acid - a metabolic acid found in yeast and liver cells; used to make dyes and drugs and sun blockers
sun blocker, sunblock, sunscreen - a cream spread on the skin; contains a chemical (as PABA) to filter out ultraviolet light and so protect from sunburn
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
References in periodicals archive ?
Synthetic P2 medium had the following composition (in g/L): yeast extract, 1; K[H.sub.2][Po.sub.4], 0.5; [K.sub.2]HP[O.sub.4], 0.5; para aminobenzoic acid, 0.001; thiamin, 0.001; biotin, 1 x [10.sup.-5]; Mg[So.sub.4]*7[H.sub.2]O, 0.2; Mn[So.sub.4]*7[H.sub.2]O, 0.01; [Fe.sub.2][So.sub.4]*7[H.sub.2]O, 0.01; NaCl, 0.01; and ammonium acetate, 2.2 [15].
* Ethanol or ethanol containing 5% para aminobenzoic acid (PABA) was applied to pieces of human skin prior to exposure to 30 mJ [cm.sup.-2] solar simulated radiation.
* Para aminobenzoic acid (oldest sunscreen to be used, causes staining of clothes)