The effectiveness of steady-state levels of gaseous chlorine dioxide (ClO₂) against Tulane virus (TV), a human norovirus surrogate, on berries was determined. The generated ClO₂ was maintained at 1 mg/L inside a 269 L glove box to treat two 50 g batches of blueberries, raspberries, and blackberries, and two 100 g batches of strawberries that were immersion coated with TV. The standardized/normalized treatment concentrations of ClO₂ ranging from 0.63 to 4.40 ppm-h/g berry were evaluated. When compared to untreated TV contaminated berries, log reductions of TV were in excess of 2.9 log PFU/g for all berry types and conditions tested, indicating that ClO₂ was highly effective. In general, the efficacy of all ClO₂ treatments on log reductions of TV on all berries was not significantly different (p < 0.05). The average log reduction with strawberries, raspberries, blueberries, and blackberries, treated with the lowest ClO₂ concentration, 0.63 ppm-h/g, were 2.98, 3.40, 3.82, and 4.17 log PFU/g, respectively. Overall results suggest that constant levels of ClO₂ could be quite effective against foodborne viruses.

中文翻译：

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稳态气态二氧化氯处理对浆果中杜兰病毒灭活的评估。

确定了稳态水平的气态二氧化氯（ClO ₂）对浆果中人类诺如病毒替代品杜兰病毒（TV）的有效性。将生成的ClO ₂维持在269 L的手套箱中，保持在1 mg / L的水平，以处理两批50 g的蓝莓，覆盆子和黑莓，以及两批100 g的浸入电视的草莓。评价了ClO ₂的标准化/标准化处理浓度，该浓度范围为0.63至4.40 ppm-h / g浆果。与未经处理的受TV污染的浆果相比，在所测试的所有浆果类型和条件下，TV的对数减少均超过2.9 log PFU / g，这表明ClO ₂是非常有效的。总的来说，所有ClO ₂的功效所有浆果的电视对数减少的处理没有显着差异（p  <0.05）。用最低ClO ₂浓度0.63 ppm-h / g处理的草莓，覆盆子，蓝莓和黑莓的平均log降低分别为2.98、3.40、3.82和4.17 log PFU / g。总体结果表明，恒定水平的ClO ₂可能对食源性病毒非常有效。