80008-86-2Relevant academic research and scientific papers
A strip liposome immunoassay for aflatoxin B1.
Ho,Wauchope
, p. 1493 - 1496 (2002)
A technique has been developed for the preparation of aflatoxin B1 (AFB1)-tagged liposomes encapsulating a visible dye. These liposomes have several useful potential analytical applications, one of which is demonstrated. A simple plastic-backed nitrocellulose strip is the basis for an assay for detecting AFB1. Samples containing aflatoxin B1 are allowed to migrate by capillary action along the strip into a zone containing immobilized antibodies; then aflatoxin B1-tagged, dye-containing liposomes are allowed to migrate into the same area, filling any remaining antibody sites. The liposomes that bound to the antibody zone exhibit an intense purplish pink color whose optical density is inversely proportional to the aflatoxin concentration in the sample. The device is capable of detecting aflatoxin B1 at levels down to 20 ng and could serve as a rapid procedure for visual screening of agricultural and food samples for AFB1 or, with densitometry, as an inexpensive quantitative assay.
Photodegradation kinetics and byproducts identification of the Aflatoxin B1 in aqueous medium by ultra-performance liquid chromatography- quadrupole time-of-flight mass spectrometry
Liu, Ruijie,Jin, Qingzhe,Tao, Guanjun,Shan, Liang,Huang, Jianhua,Liu, Yuanfa,Wang, Xingguo,Mao, Wenyue,Wang, Shanshan
experimental part, p. 553 - 559 (2011/07/29)
A photodegradation study of Aflatoxin B1 (AFB1) in water solution was performed under UV irradiation at different AFB1 initial concentrations and UV irradiation intensities. The effect of UV intensity on the AFB1 photodegradation ratio isdominative, when compared with AFB1 initial concentration. The photodegradation of AFB1 was proved to follow first-order reaction kinetics (R 2 ≥ 0.99). Three photodegradation products, i.e. P1 (C17H14O7), P2 (C16H 14O6) and P3 (C16H 12O7), were identified on the basis of low mass error and high matching property by ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF MS), and the degradation pathway was proposed. This study first reports the appearance of these photodegradation products and the proposed degradation pathway in aqueous media. Copyright
