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Impact of previous active dipping in Fucus spiralis extract on the quality enhancement of chilled lean fish
Food Control ( IF 5.6 ) Pub Date : 2018-08-01 , DOI: 10.1016/j.foodcont.2018.03.020
José M. Miranda , Mónica Carrera , Jorge Barros-Velázquez , Santiago P. Aubourg

Abstract The first goal of this work was to enhance the quality of chilled fish by applying a preliminary dipping treatment containing a bioactive extract from the alga Fucus spiralis. Megrim (Lepidorhombus whiffiagonis) specimens were dipped in aqueous solutions containing two different concentrations of the alga extract (0.50% and 0.10% alga/dipping solution, w/v; HAC and LAC batches, respectively). In addition, two control batches were considered (water dipping control and no dipping control). Microbial, chemical and sensory qualities were assessed in fish specimens after 0, 2, 6, 9 and 13 days of chilled storage. An antimicrobial effect at advanced stages of storage (9–13-day period) was observed as determined by the comparative evolution of aerobes, psychrotrophs and Enterobacteriaceae counts in megrim muscle. Likewise, a protective effect against specific lipolytic and proteolytic spoilage bacteria was also achieved at that storage period, as well as a decrease of free fatty acids formation. However, alga extract in the dipping medium had no effect (p > 0.05) on the increase of lipid oxidation in fish muscle throughout chilled storage. Interestingly, average scores revealed improved sensory quality in megrim corresponding to the HAC batch for the 9–13-day chilled period. Consequently, the proposed novel dipping treatment can be considered of interest for both on-board and in-land fish storage, due to the simple methodology employed and the resulting protective effects on fish quality.

中文翻译:

先前积极浸渍墨角藻提取物对冷冻瘦肉鱼品质提高的影响

摘要 这项工作的第一个目标是通过应用含有藻墨角藻生物活性提取物的初步浸渍处理来提高冷冻鱼的质量。将 Megrim (Lepidorhombus whiffiagonis) 样本浸入含有两种不同浓度藻类提取物的水溶液中(分别为 0.50% 和 0.10% 藻类/浸渍溶液,w/v;分别为 HAC 和 LAC 批次)。此外,还考虑了两个控制批次(水浸控制和无浸控制)。在冷藏 0、2、6、9 和 13 天后,对鱼标本的微生物、化学和感官品质进行了评估。通过 megrim 肌肉中需氧菌、嗜冷菌和肠杆菌属计数的比较进化确定,观察到在储存后期(9-13 天期间)的抗菌作用。同样地,在该储存期间还实现了针对特定脂解和蛋白水解腐败细菌的保护作用,以及游离脂肪酸形成的减少。然而,浸渍培养基中的藻类提取物在整个冷藏过程中对鱼肌肉中脂质氧化的增加没有影响(p > 0.05)。有趣的是,平均分数显示,在 9-13 天冷藏期间,与 HAC 批次相对应的 megrim 的感官质量有所改善。因此,由于采用了简单的方法以及由此产生的对鱼类质量的保护作用,可以认为所提议的新型浸渍处理对船上和内陆鱼类储存都有意义。在整个冷藏过程中,浸渍培养基中的藻类提取物对鱼肌肉中脂质氧化的增加没有影响(p > 0.05)。有趣的是,平均分数显示,在 9-13 天冷藏期间,与 HAC 批次相对应的 megrim 的感官质量有所改善。因此,由于采用了简单的方法以及由此产生的对鱼类质量的保护作用,可以认为所提议的新型浸渍处理对船上和内陆鱼类储存都有意义。在整个冷藏过程中,浸渍培养基中的藻类提取物对鱼肌肉中脂质氧化的增加没有影响(p > 0.05)。有趣的是,平均分数显示,在 9-13 天冷藏期间,与 HAC 批次相对应的 megrim 的感官质量有所改善。因此,由于采用了简单的方法以及由此产生的对鱼类质量的保护作用,可以认为所提议的新型浸渍处理对船上和内陆鱼类储存都有意义。
更新日期:2018-08-01
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