Mao Haifang, Wang Hongzhao, Hu Xiaojun, Zhang Pingyi, Xiao Zuobing, Liu Jibo
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China.
School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China.
ACS Omega. 2020 Apr 10;5(15):8794-8803. doi: 10.1021/acsomega.0c00370. eCollection 2020 Apr 21.
Vanillin (4-hydroxy-3-methoxybenzaldehyde) is one of the most widely used food spices. Aimed at bio-vanillin green production, the natural materials were directly catalytically oxidized efficiently in one pot under low O pressure (0.035 MPa) in the presence of a non-noble metal oxidation combined catalyst (NiCoO/SiO nanoparticles), which showed remarkable advantages of a short synthetic route and less industrial waste. The catalytic system showed good universality to many natural substrates with nearly 100% conversion and 86.3% bio-vanillin yield. More importantly, carbon isotope ratio investigations were employed to verify the origin of the organic matter. One hundred percent C content of the obtained vanillin was detected, which indicated that it was an efficient method to distinguish the vanillin from biomass or fossil materials. Furthermore, the C isotope examination showed effective distinguishing ability for the vanillin from a particular biomass source. The C isotope detection provides an effective method for commercial vanillin identification.
香草醛（4-羟基-3-甲氧基苯甲醛）是应用最为广泛的食用香料之一。为实现生物香草醛的绿色生产，在非贵金属氧化复合催化剂（NiCoO/SiO纳米颗粒）存在下，于低氧压力（0.035兆帕）条件下，天然原料在一锅中直接被高效催化氧化，该方法具有合成路线短和工业废料少的显著优势。该催化体系对许多天然底物具有良好的通用性，转化率接近100%，生物香草醛产率达86.3%。更重要的是，采用碳同位素比率研究来验证有机物的来源。检测到所得香草醛的碳含量为100%，这表明该方法是区分香草醛与生物质或化石材料的有效方法。此外，碳同位素检测显示出对特定生物质来源的香草醛具有有效的区分能力。碳同位素检测为商业香草醛鉴定提供了一种有效方法。
