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Impact of Non-thermal Dielectric Barrier Discharge Plasma on Staphylococcus aureus and Bacillus cereus and Quality of Dried Blackmouth Angler (Lophiomus setigerus)
Journal of Food Engineering ( IF 5.5 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.jfoodeng.2020.109952
Man-Seok Choi , Eun Bi Jeon , Ji Yoon Kim , Eun Ha Choi , Jun Sup Lim , Jinsung Choi , Shin Young Park

Abstract This study investigated the effects of dielectric barrier discharge (DBD) plasma against Staphylococcus aureus and Bacillus cereus (initial inoculum of 8–9 log10 CFU/mL) on the surface of dried blackmouth angler, and the physicochemical [pH, Hunter colors, thiobarbituric acid reactive (TBA)] and sensorial quality on the dried blackmouth angler. Reductions in S. aureus and B. cereus counts on the fillet treated with 1, 5, 10, 20 and 30 min of DBD plasma ranged from 0.10 to 1.03 log10 CFU/g and 0.14 to 1.06 log10 CFU/g, respectively. The D1 and D2 (90% and 99% reduction time) of DBD plasma for S. aureus and B. cereus by first-order kinetics were 33 and 66.88 min and 32.36 and 64.74 min, respectively. TBA values increased slightly with an increase in DBD plasma treatment times. However, differences in Hunter colors [“L”, “a”, and “b”] and pH of the dried blackmouth angler were not significant between the non-treated (control) and DBD plasma-treated samples. Moreover, the most sensory attributes [appearance, color, flavor, overall acceptability] were not significantly different between the non-treated and DBD plasma-treated dried blackmouth angler. However, when treated with DBD plasma for more than 20 min, the texture value decreased significantly (P 90% reduction of S. aureus and B. cereus without concomitant overall adverse changes in dried blackmouth angler; this approach can be considered in dried fishery food production, processing, and distribution processes to enhance dried fishery meat safety.

中文翻译:

非热介电势垒放电等离子体对金黄色葡萄球菌和蜡状芽孢杆菌及干黑嘴垂钓者(Lophiomus setigerus)品质的影响

摘要 本研究调查了介质阻挡放电 (DBD) 等离子体对金黄色葡萄球菌和蜡状芽孢杆菌(初始接种量为 8-9 log10 CFU/mL)对干燥黑嘴垂钓者表面的影响,以及物理化学 [pH、Hunter 颜色、硫代巴比妥酸酸反应性 (TBA)] 和干燥黑嘴垂钓者的感官品质。用 1、5、10、20 和 30 分钟 DBD 血浆处理的鱼片上金黄色葡萄球菌和蜡状芽孢杆菌计数的减少范围分别为 0.10 至 1.03 log10 CFU/g 和 0.14 至 1.06 log10 CFU/g。根据一级动力学,金黄色葡萄球菌和蜡状芽孢杆菌的 DBD 血浆的 D1 和 D2(90% 和 99% 还原时间)分别为 33 和 66.88 分钟以及 32.36 和 64.74 分钟。TBA 值随着 DBD 等离子体处理时间的增加而略有增加。但是,猎人颜色的差异 [“L”、“a”、和“b”] 和干黑嘴垂钓者的 pH 值在未处理(对照)和 DBD 等离子体处理的样品之间不显着。此外,未经处理的和经 DBD 等离子处理的干黑嘴垂钓者的大多数感官属性 [外观、颜色、风味、总体可接受性] 没有显着差异。然而,当用 DBD 血浆处理超过 20 分钟时,质地值显着降低(P 减少了 90% 金黄色葡萄球菌和蜡状芽孢杆菌,而干黑嘴垂钓者没有伴随整体不利变化;这种方法可以考虑用于干渔业食品生产、加工和分销过程,以提高干鱼肉的安全性。颜色、风味、总体可接受性] 未处理和 DBD 等离子体处理的干黑嘴垂钓者之间没有显着差异。然而,当用 DBD 血浆处理超过 20 分钟时,质地值显着降低(P 减少了 90% 金黄色葡萄球菌和蜡状芽孢杆菌,而干黑嘴垂钓者没有伴随整体不利变化;这种方法可以考虑用于干渔业食品生产、加工和分销过程,以提高干鱼肉的安全性。颜色、风味、总体可接受性] 未处理和 DBD 等离子体处理的干黑嘴垂钓者之间没有显着差异。然而,当用 DBD 血浆处理超过 20 分钟时,质地值显着降低(P 减少了 90% 金黄色葡萄球菌和蜡状芽孢杆菌,而干黑嘴垂钓者没有伴随整体不利变化;这种方法可以考虑用于干渔业食品生产、加工和分销过程,以提高干鱼肉的安全性。干黑嘴垂钓者的蜡状没有伴随的整体不利变化;可以在鱼干食品的生产、加工和分销过程中考虑这种方法,以提高鱼干肉的安全性。干黑嘴垂钓者的蜡状没有伴随的整体不利变化;可以在鱼干食品的生产、加工和分销过程中考虑这种方法,以提高鱼干肉的安全性。
更新日期:2020-08-01
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