In the study, metabolites of Euphorbia sanguinea were used as benign reducing and stabilizing agents to obtain zinc oxide nanoparticles (ZnO-NPs). The nanoparticles were evaluated as dual agent for photodegradation of Malachite green dye and tyrosinase inhibitior of mushroom tyrosine enzyme. Surface plasmon bands and energy band gaps of the ZnO-NPs were within the range 356–378 nm and 2.72–4.37 eV respectively as obtained from the UV–Vis spectra. SEM/EDS elemental mapping of the nanoparticles gave flower-like shape and even distribution of zinc and oxygen. XRD result revealed crystallographic peaks assigned to hexagonal phase of zinc oxide. The metal oxide nanoparticles were used to achieve 53% percentage degradation of Malachite green dye solution in less than a minute of solar radiation, which increased to 92% in 60 min. A first order kinetics with correlation coefficient R² of 0.937, rate constant of 0.0084 min⁻¹ and half-life of 82.52 min was established for the photodegradation process. The ZnONPs exhibited good tyrosinase inhibition with IC50 of 49.016 µg/ml. The mode of enzymatic inhibition was competitive with an inhibition constant (Ki) of 0.525 mM using Lineweaver–Burk kinetic model.

在这项研究中，大戟大戟的代谢产物被用作良性还原剂和稳定剂，从而获得氧化锌纳米颗粒（ZnO-NPs）。纳米粒子被评估为孔雀石绿染料和酪氨酸酶光降解的双重试剂抑制蘑菇酪氨酸酶。ZnO-NPs的表面等离激元能带和能带隙分别在356-378 nm和2.72-4.37 eV范围内，这是从UV-Vis光谱获得的。纳米颗粒的SEM / EDS元素图谱显示花状，锌和氧分布均匀。XRD结果显示出分配给氧化锌六方相的结晶峰。金属氧化物纳米颗粒用于在不到一分钟的太阳辐射下实现53％的孔雀石绿色染料溶液降解，降解率在60分钟内达到92％。对于光降解过程，建立了相关系数R ²为0.937，速率常数为0.0084 min ^-1和半衰期为82.52 min的一级动力学。ZnONP表现出良好的酪氨酸酶抑制，IC50为49.016 µg / ml。使用Lineweaver–Burk动力学模型，酶促抑制模式具有0.525 mM的抑制常数（Ki）竞争。