METHANOGENIC DECOMPOSITION OF FERULIC ACID, A MODEL LIGNIN DERIVATIVE
METHANOGENIC DECOMPOSITION OF FERULIC ACID, A MODEL LIGNIN DERIVATIVE
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DOI：
10.1128/aem.39.2.436-444.1980
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发表时间：
1980-01-01
影响因子：
4.4
通讯作者：
REINHARD, M
中科院分区：
文献类型：
--
作者：
HEALY, JB;YOUNG, LY;REINHARD, M
阿魏酸是一种典型的木质素衍生物，在严格的厌氧条件下可降解为甲烷和二氧化碳。这种转化似乎是由一群细菌进行的，类似于先前描述的苯甲酸的产甲烷降解。这些培养物中醋酸盐的暂时积累表明它很可能是甲烷形成的中间产物和前体。一种类似于Co M的2-溴乙烷磺酸（BESA）抑制了产气，并促进了丙酸、丁酸、异丁酸和异戊酸的生成。在besa抑制培养中还检测到苯乙酸酯、肉桂酸酯、3-苯丙酸酯、苯甲酸酯、羧酸环己烷、己二酸酯和戊酸酯。本文提出了一种途径，其中包括这些不同的酸作为阿魏酸产甲烷降解的可能中间体。该模型与先前描述的苯甲酸降解途径重叠，表明这种类型的厌氧降解可能对芳香化合物很常见。
Ferulic acid, a model lignin derivative, was observed to be biodegradable to methane and CO2 under strict anaerobic conditions. This conversion appears to be carried out by a consortium of bacteria similar to that previously described for the methanogenic degradation of benzoic acid. A temporary buildup of acetate in these cultures indicates that it is a likely intermediate and precursor for methane formation. An analog of Co M, 2-bromoethanesulfonic acid (BESA), inhibited gas production and enhanced the buildup of propionate, butyrate, isobutyrate and isovalerate. Phenylacetate, cinnamate, 3-phenylpropionate, benzoate, cyclohexane carboxylate, adipate and pimelate were also detected in BESA-inhibited cultures. A pathway is proposed which includes these various acids as possible intermediates in the methanogenic degradation of ferulic acid. This model overlaps previously described benzoic acid degradation pathways, suggesting that this type of anerbobic degradation may be common for aromatic compounds.