Horvitz Sandra, Arancibia Mirari, Arroqui Cristina, Chonata Erika, Vírseda Paloma
Research Institute for Innovation & Sustainable Development in Food Chain, Campus Arrosadía, Public University of Navarre, 31006 Pamplona, Spain.
Food Science and Engineering Faculty, Technical University of Ambato, Av. Los Chasquis y Rio Payamino, Ambato 180206, Ecuador.
Foods. 2021 Aug 30;10(9):2039. doi: 10.3390/foods10092039.
Andean blackberries are highly perishable due to their susceptibility to water loss, softening, mechanical injuries, and postharvest diseases. In this study, the antimicrobial efficacy of gaseous ozone against spoilage (mesophiles, psychrotrophs, and yeasts and molds) and pathogenic (, , and ) microorganisms was evaluated during 10 days of storage at 6 ± 1 °C. Respiration rate and mass loss were also determined. Ozone was applied prior to storage at 0.4, 0.5, 0.6, and 0.7 ppm, for 3 min. The best results were observed with the higher ozone dose, with initial maximum reductions of ~0.5, 1.09, and 0.46 log units for , , and , respectively. For the native microflora, maximum reductions of 1.85, 1.89, and 2.24 log units were achieved on day 1 for the mesophiles, psychrotrophs, and yeasts and molds, respectively, and this effect was maintained throughout storage. In addition, the lower respiration rate and mass loss of the blackberries ozonated at 0.7 ppm indicate that this treatment did not induce physiological damage to the fruit. Gaseous O could be effective in maintaining the postharvest quality of blackberries throughout refrigerated storage but higher doses could be advisable to enhance its antimicrobial activity.
安第斯黑莓极易腐烂，因为它们容易失水、软化、受到机械损伤以及感染采后病害。在本研究中，评估了气态臭氧对腐败微生物（嗜温菌、嗜冷菌以及酵母菌和霉菌）和致病微生物（此处原文致病微生物名称缺失）在6±1℃下储存10天期间的抗菌效果。还测定了呼吸速率和质量损失。在储存前以0.4、0.5、0.6和0.7 ppm的剂量施加臭氧3分钟。观察到较高臭氧剂量取得了最佳效果，对于（此处原文微生物名称缺失）、（此处原文微生物名称缺失）和（此处原文微生物名称缺失），初始最大减少量分别约为0.5、1.09和0.46对数单位。对于原生微生物群落，嗜温菌、嗜冷菌以及酵母菌和霉菌在第1天分别实现了1.85、1.89和2.24对数单位的最大减少量，并且这种效果在整个储存期间得以维持。此外，经0.7 ppm臭氧处理的黑莓呼吸速率和质量损失较低，表明该处理未对果实造成生理损伤。气态臭氧在冷藏储存期间对维持黑莓的采后品质可能有效，但可能建议采用更高剂量以增强其抗菌活性。
