PubAg

Main content area

Degradation kinetics of aflatoxin B1 and B2 in solid medium by using pulsed light irradiation

Author:
Wang, Bei, Mahoney, Noreen E, Khir, Ragab, Wu, Bengang, Zhou, Cunshan, Pan, Zhongli, Ma, Haile
Source:
Journal of the science of food and agriculture 2018 v.98 no.14 pp. 5220-5224
ISSN:
0022-5142
Subject:
aflatoxin B1, aflatoxin B2, irradiation, kinetics, light, models
Abstract:
BACKGROUND: Pulsed light (PL) is a new potential technology to degrade aflatoxin. The objective of this study was to investigate the degradation characters of aflatoxin B₁ (AFB₁) and B₂ (AFB₂) treated under PL irradiation. A kinetic degradation study of AFB₁ and AFB₂ in solid medium was performed under PL irradiation at different initial concentrations of AFB₁ (229.9, 30.7 and 17.8 μg kg⁻¹) and AFB₂ (248.2, 32.2 and 19.5 μg kg⁻¹) and irradiation intensities (2.86, 1.60 and 0.93 W cm⁻²) of PL. A second‐order reaction model was applied to describe degradation of AFB₁ and AFB₂. RESULTS: The results showed that the degradation of AFB₁ and AFB₂ followed the second‐order reaction kinetic model well (R² > 0.97). The degradation rate was proportional to the intensities of PL irradiation and the initial concentrations of aflatoxins. CONCLUSION: It is concluded that the degradation of AFB₁ and AFB₂ with the use of PL could be accurately described using the second‐order reaction kinetic model. © 2018 Society of Chemical Industry
Agid:
6148606