预干燥储存和干燥方法对干燥海藻质量的影响
Jonas Steenholdt Sparvath1, Aurora Luiza Cardoso2, Turid Rustad3
1National Food Institute, Technical University of Denmark, Kgs. Lyngby, Denmark.
Food research international (Ottawa, Ont.)
|November 4, 2025
概括
养殖的稳定是北大西洋水产养殖的关键. 在收获后五天内快速干燥可保持微生物质量,环境温度干燥可增强特定应用的脂质结合.
科学领域:
- 海洋生物技术和水产养殖
- 食品科学与技术 食品科学与技术
- 微生物学 微生物学
背景情况:
- 鱼养殖 (Alaria esculenta,Saccharina latissima) 对北大西洋沿海地区的发展非常有前途.
- 提升海藻生产面临的挑战是收获后的稳定,以防止腐烂.
- 微生物质量是影响的保质期和可用性的关键因素.
研究的目的:
- 为了研究冷藏储存期间在养殖海藻中的微生物质量变化.
- 为了评估对流和环境温度干燥对海藻稳定性的有效性.
- 评估储存和干燥对海藻的功能性质的影响 (膨胀,水/脂质结合).
主要方法:
- 在2-3°C冷藏A. esculenta (7天) 和S. latissima (10天) 的冷藏.
- 通过对流 (37.2°C) 或环境 (5-10°C) 大气干燥稳定新鲜和储存的海藻.
- 微生物负载评估 (3M有氧计数板) 和胀,水和脂质结合能力的确定.
主要成果:
- 在冷藏储存期间,微生物负载显著增加,在7天后达到5.9-6.1 log (CFU/g).
- 干燥显著降低了细菌负载,特别是储存的海藻 (4.2-5.1日志减少).
- S. latissima表现出优异的胀和水结合;环境干燥增强了脂质结合.
结论:
- 鱼应在收获后五天内稳定,以保持微生物质量.
- 对流式干燥在减少细菌方面更快,更有效,而对于富含脂质的产品,环境干燥更好.
- 干燥方法的选择取决于海藻种类和预期的最终用途,平衡微生物安全性和功能性质.
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