在新加坡水培农业设施的卫生:什么,为什么,以及如何
Cliff An Ting Tham1,2, Ye Htut Zwe1,3, Michelle Mei Zhen Ten1
1Department of Food Science and Technology, National University of Singapore, , Singapore.
Applied and environmental microbiology
|June 28, 2024
概括
清洁水培系统对于食品安全至关重要,因为特定的细菌促进病原体的生长. 低酸 (NaOCl) 有效地去除生物膜,但冲洗是防止有害副产品的必要条件.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 食品安全 食品安全
背景情况:
- 水培系统虽然高效,但可以容纳微生物群落.
- 水栽培中的非致病性细菌可能会促进病原体的殖民化,造成食品安全风险.
- 有效的消毒是必要的,以减轻这些风险在受控环境农业.
研究的目的:
- 分析营养膜技术 (NFT) 水培系统的微生物组.
- 研究强大的生物膜形成细菌在病原体殖民中的作用.
- 为了评估水培系统的不同消毒解决方案的有效性.
主要方法:
- 在新加坡的三个室内农场中对NFT系统的微生物分析.
- 强大的生物膜形成细菌的隔离和测试,以检测它们对 * 沙门氏菌 * 殖民的影响.
- 实验室和现场规模评估的消毒溶液,包括高化 (NaOCl),过氧化 (H2O2),和碳酸 (SPC).
主要成果:
- NFT系统的微生物组是特定于农场的.
- 两个细菌, *Corynebacterium tuberculostearicum* C2 和 *Pseudoxanthomonas mexicana* C3,显著促进了 *Salmonella* 的附着,殖民和生长.
- 与H2O2和SPC相比,NaOCl显示出更高的生物膜去除功效.
- 由于有机物和持久生物膜,在操作系统中需要更高的NaOCl度 (500 ppm).
- 虽然NaOCl消毒不损害后续植物生长,但在不冲洗的情况下检测到高水平的副产品酸盐.
结论:
- 对于水培系统来说,消毒是必不可少的,以防止病原体的扩散.
- 低化是一种有效且经济的水培系统消毒剂.
- 在NaOCl应用后进行彻底冲洗至关重要,以避免有害的副产品在植物和溶液中积累.
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