Magnolia kobus DC. (M. kobus), a prominent Southeast Asian flowering plant species, was investigated for its inhibition efficiency against mild steel corrosion in 1 M H₂SO₄. The extract (M. kobus) was identified to have 145.80 µg/g of myricetin and 102.32 µg/g syringic acid as prominent components, with a total phenolic content (TPC) of 95.26 mg/g and a total flavonoid content (TFC) of 25.38 mg/g. The mass-loss measurements showed that 500 ppm of M. kobus extract was able to inhibit corrosion, with an efficiency of 95.01% at 303 ± 1 K. Reduction of dissolved iron content in the inhibited solution than in the inhibitor free solution observed in Atomic Adsorption Spectroscopy (AAS) revealed the corrosion mitigating effect of inhibitor on mild steel. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and atomic force microscopy (AFM) analysis of the protected and unprotected mild steel samples indicate adsorption of M. Kobus on the electrode surface. UV-visible and FT-IR studies complement the above results. The electrochemical studies indicated that M. kobus functioned as a mixed-type indicator and myricetin along with other plant components present in the plant extract contributed to the inhibition process.

木兰木兰DC。（M. kobus）是东南亚著名的开花植物，其在1 MH ₂ SO _4中对轻度钢腐蚀的抑制作用得到了研究。提取物（M. kobus）被鉴定为具有145.80μg/ g的杨梅素和102.32μg/ g的丁香酸作为主要成分，总酚含量（TPC）为95.26 mg / g，总类黄酮含量（TFC）为25.38 mg / g。质量损失测量表明，风铃木的含量为500 ppm提取物能够抑制腐蚀，在303±1 K时效率为95.01％。在原子吸收光谱法（AAS）中观察到，与无抑制剂溶液相比，抑制溶液中溶解铁的含量降低，表明抑制剂对金属的缓蚀作用软钢。受保护和未受保护的低碳钢样品的扫描电子显微镜（SEM），能量色散X射线光谱（EDX）和原子力显微镜（AFM）分析表明M. Kobus吸附在电极表面。紫外线可见和FT-IR研究补充了以上结果。电化学研究表明，kobus菌起着混合型指示剂的作用，而杨梅素与植物提取物中存在的其他植物成分一起起到了抑制作用。