Detection of radiation-induced markers from parts of irradiated kiwifruits

Identification and Characterization of Gamma‐Irradiated Dried Lentinus edodes Using ESR, SEM, and FTIR Analyses

“…Different parts of irradiated dried mushrooms produced strong dose‐dependent radiation‐induced signals, except mushroom gills. The difference in ESR response following irradiation treatment might be due to different chemical composition of the samples used for ESR analysis and results were in good agreement to those provided by Jo and Kwon (2006) for different parts of kiwifruits. The intensity of ESR signals increased with the increasing irradiation dose as presented in Figure 2 with the coefficients of determination ( R 2 ) illustrating the most linear dose response for the cap core samples ( R 2 = 0.9611).…”

ESR-Based Investigation of Radiation-Induced Free Radicals in Fresh Vegetables After Different Drying Treatments

“…The variation in ESR response of different parts of the same vegetable after irradiation might be due to the change in chemical composition of the samples and the results were similar to those provided by Jo and Kwon for kiwifruits. [17] The AD treatment provided an overall better result when the signals from the same part were compared after the different treatments. The intensities of the side peaks in comparison to the main signal (signal ratio) showed significant differences depending upon part of the vegetable used for the ESR analysis and sample pretreatments (Tables 4-6).…”

“…[12] Tabner and Tabner [13] first observed stable radiation-specific free radicals in the flesh of irradiated citrus by ESR technique after drying the sample on filter paper at room temperature. Later, many attempts have been made to obtain improved results by freeze-drying, [14] alcoholicextraction, [15,16] oven-drying, [17] or other techniques. [14,18−20] These methods have some inherent advantages and limitations considering the cost, simplicity, time, and effect on ESR spectral features.…”

Analysis of Relaxation Behavior of Free Radicals in Irradiated Cellulose Using Pulse and Continuous-Wave Electron Spin Resonance

“…Ehrenberg et al, 1962). There have been many recent reports on the side signals (Lee et al, 2009;Lee et al, 2008;Yordanov et al, 2009;Raffi et al, 2009;Yamaoki et al, 2009;Sanyal et al, 2008;Cutrubinis et al, 2007;Polovka et al, 2007;Jo & Kwon, 2006;Butz & Hildebrand, 2006). Lee et al have reported on irradiated sesame seeds using ESR (Lee et al, 2009;Lee et al, 2008).…”

“…A triplet line has been reported from the irradiated flesh of kiwifruits, with the extra signals resulting from cellulose radicals on both sides of the endogenous signal (Jo & Kwon, 2006). Studies on the irradiated shells of walnuts and pistachios have shown that a sample can be unambiguously identified, if beside the central signal satellite peaks, a separation of 6.0 ± 0.05 mT is detected (Butz & Hildebrand, 2006).…”