|
| Photocatalytic degradation of aflatoxin B1 in peanut oil within a circulating tubular reactor |
|
Received:April 29, 2025 Revised:February 22, 2026 Accepted:June 03, 2025
Published：July 20, 2026
|
| DOI：10.19902/j.cnki.zgyz.1003-7969.250226 |
| KeyWord:aflatoxin B1 photocatalytic degradation peanut oil circulating tubular reactor functional film |
| FundProject:国家自然科学基金项目（32202094） |
|
| Hits: 455 |
| Download times: 9 |
| Abstract: |
| To develop photocatalytic technologies aimed at the efficient degradation of aflatoxin B1 (AFB1) in oils, a polyimide/silver phosphotungstate/PVDF photocatalytic functional film (MPDF) material was fabricated using an adhesion method. The AFB1 adsorption capacity of MPDF in a circulating tubular reactor was investigated. The effects of illumination time, circulation flow rate, system water content, reaction temperature, and light source on the degradation efficiency of AFB1 in peanut oil were systematically studied. Furthermore, the changes in quality indicators of peanut oil, including acid value, peroxide value, color, oxidation induction time, fatty acid composition, were analyzed before and after photocatalysis. The results showed that in the circulating tubular reactor, illumination time, circulation flow rate, reaction temperature, system water content, and light source all significantly influenced the degradation of AFB1 in peanut oil. The optimal conditions for the photocatalytic degradation of AFB1 in peanut oil were as follows: 80 W ultraviolet lamp as the light source, dark adsorption time 45 min, circulation flow rate 250 mL/min, system water content 15%, reaction temperature 75 ℃, and illumination time 120 min. Under these conditions, the degradation rate of AFB1 reached 59.76%, with a pseudo-first-order rate constant (k) of 0.466 2 h-1. Before and after the photocatalytic reaction, the acid value and peroxide value of the peanut oil complied with national standard requirements. There was basically no significant change in the color or fatty acid composition of the oil (p>0.05). The oxidation induction time decreased, however, there was no significant deterioration in the quality of the peanut oil. In summary, the constructed circulating tubular photocatalytic reactor enables continuous degradation of AFB1 in oils while maintaining oil quality. |
| View full text View/Add Comment Download reader |
| Close |
|
|
|
