代谢
阿魏酸(FA;3-甲氧基-4-羟基肉桂酸)及其代谢物在大鼠口服短期摄入5.15 mg/kg的FA后在大鼠血浆和尿液中的生物利用度进行了研究。自由FA、葡萄糖醛酸苷和硫酸酯在血浆中迅速被检测到,浓度峰值在摄入后30分钟出现。硫酸酯是主要的衍生物(大约占50%)。在尿液中,总代谢物的累积排泄在摄入后1.5小时达到平台期,大约有40%通过这种方式排出。尿液中回收的自由FA仅占大鼠摄入的原生FA的4.9 +/-1.5%。葡萄糖醛酸苷和硫酸酯分别代表0.5 +/- 0.3%和32.7 +/- 7.3%。这些结果表明,部分FA在饮食中摄入后迅速被吸收,并在尿液排泄之前大量转化为硫酸酯代谢物。
The bioavailability of ferulic acid (FA; 3-methoxy-4-hydroxycinnamic acid) and its metabolites was investigated in rat plasma and urine after an oral short-term ingestion of 5.15 mg/kg of FA. Free FA, glucuronoconjugates, and sulfoconjugates were quickly detected in plasma with a peak of concentration found 30 min after ingestion. Sulfoconjugates were the main derivates ( approximately 50%). In urine, the cumulative excretion of total metabolites reached a plateau 1.5 h after ingestion, and approximately 40% were excreted by this way. Free FA recovered in urine represented only 4.9 +/-1.5% of the native FA consumed by rats. Glucuronoconjugates and sulfoconjugates represented 0.5 +/- 0.3 and 32.7 +/- 7.3%, respectively. These results suggested that a part of FA incorporated in the diet was quickly absorbed and largely metabolized in sulfoconjugates before excretion in urine.
来源:Hazardous Substances Data Bank (HSDB)