Acrylic acid is used in various industrial applications but inflicts harm to human health and causes environmental pollution. A new bacterium, identified as Rhodococcus ruber JJ-3, was isolated, which can degrade high concentrations of acrylic acid rapidly and completely. Experimental results showed that the strain can achieve complete degradation of 1000 mg·L⁻¹ acrylic acid in 11 h under the following conditions: pH 7, temperature 35°C, and inoculation quantity 15%. A high concentration of acrylic acid (2000 mg·L⁻¹) can be completely removed in 28 h. According to the Monod model, the maximum specific degradation rate (v_max) and half saturation rate constant (K_S) of the strain were 0.85 h⁻¹ and 101.83 mg·L⁻¹, respectively. The results of carbon balance revealed that 54.6% carbon was assimilated by R. ruber JJ-3 as biomass, and 43.0% carbon was mineralized into CO₂. Furthermore, glycerol and lactic acid were measured as intermediates, and the possible degradation pathway was proposed during the biodegradation of acrylic acid. These results suggested that R. ruber JJ-3 completely degrades acrylic acid and might have a potential environmental implication in the purification of acrylic acid-contaminated environments.

丙烯酸用于各种工业应用中，但会危害人体健康并造成环境污染。分离出一种新的细菌，称为红红球菌JJ-3，它可以快速，完全降解高浓度的丙烯酸。实验结果表明，该菌株在pH 7，温度35°C，接种量15％的条件下，在11 h内可以实现1000 mg·L ^-1丙烯酸的完全降解。高浓度的丙烯酸（2000 mg·L ^-1）可以在28小时内完全去除。根据Monod模型，最大比降解率（v _max）和半饱和率常数（K _S）分别为0.85h ^-1和101.83mg·L ^-1。碳平衡的结果表明，R。ruber JJ-3将54.6％的碳同化为生物质，并将43.0％的碳矿化为CO ₂。此外，测定了甘油和乳酸作为中间体，并提出了丙烯酸生物降解过程中可能的降解途径。这些结果表明，R。ruber JJ-3可以完全降解丙烯酸，并且在净化丙烯酸污染的环境中可能具有潜在的环境影响。