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由陳怜均著作·1996—對胺基苯甲酸(PABA)是許多細菌製造葉酸的必須成分，因它對紫外光具有良好的吸收能力，被廣泛用於防曬軟乳液的製備。PABA有溫和的抗發炎且在無毛小鼠中能保護皮膚組織免 ...

para-Aminobenzoic acid (PABA) is a precursor of folate in certain bacteria and is commonly used in sun-blocking creams because of its UV-absorbing property. It has mild anti-inflammatory activity and protects against photocarcinogenesis in hairless mice. However, there have been very few reports on the quantitative determination of PABA in foods, plants and animal tissues. In this study we utilized the fluorescent property of PABA in neutral solution (excitation at 280 nm, emission at 340 nm) to quantify PABA in multivitamin preparations, cereals, rat liver and blood, and compared with a colorimetric method and a HPLC/uv method. In addition to the assessment of PABA, we compared the precision (standard deviation, S.D., coefficient variation, C.V.) and recovery (as a criterion of accuracy) between the three methods. Intercomparison of the methods in multi-vitamin products showed that the colorimetric method was superior in...