Abstract
Using electron paramagnetic resonance (EPR) spectroscopy, we revealed the relaxation behaviors of free radicals in γ-irradiated black pepper. Upon γ-irradiation, typical doublet peaks were detected. Relaxation times (T1 and T2) were observed using pulsed EPR. We found that T1 and T2 values varied with the γ-irradiation dose levels and these values showed a dependence on the dose level of the γ-irradiation treatment.
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