肉垃圾处理的非热技术:微生物安全性,化学成分,营养价值和发酵参数 in vitro
Seyed Morteza Vaghar Seyedin1, Mohsen Mojtahedi1, Seyed Homayoun Farhangfar1
1Department of Animal Science, Faculty of Agriculture, University of Birjand, Birjand, Iran.
Veterinary medicine and science
|July 2, 2024
概括
超声波 (美国) 和电凝 (欧洲) 等非热技术有效降低了微生物负载,并提高了无动物食的 brojler litter (BL) 可消化性. 这些方法可以提高料的安全性和营养价值,而不会对发酵产生负面影响.
科学领域:
- 农业科学 农业科学
- 动物营养 动物营养
- 食品安全 食品安全
背景情况:
- brojiler垃圾 (BL) 是一个重要的农业副产品,含有高含量,造成环境污染的风险.
- BL可以作为反动物微生物蛋白质合成的非蛋白质 (NPN) 源,特别是当常规蛋白质稀缺或昂贵时.
- 目前的BL加工方法可能无法充分解决杂动物料应用中的微生物安全性和营养增强问题.
研究的目的:
- 评估非热技术,特别是电凝 (EC),紫外线 (UV) 辐射和超声波 (US) 波的有效性,以提高肉垃圾的微生物安全性和营养特征.
- 评估经过处理的BL是否适合作为反动物食中的蛋白质来源.
主要方法:
- 用电凝血 (EC),紫外线 (UV-C) 光 (249 nm) 和超声波 (US) (28 kHz) 进行了多种时间的处理.
- 用体外气体生产技术和发酵参数测量分析了经过处理和阴影干燥的对照样本的化学成分和营养价值.
- 评估的具体参数包括微生物负载,消化能力,氨度和中性洗剂纤维 (NDF).
主要成果:
- 超声处理 (15分钟) 在BL样本中显著提高了微生物安全性.
- 电凝疗法在减少真菌和菌的数量方面表现出最高的有效性.
- 虽然总体细菌和真菌没有被完全消除,但EC和US (10分钟) 处理保持了与阴影干燥样品相似的消化能力,并减少了氨和NDF,但对气体生产没有不利影响.
结论:
- 电凝 (EC) 和超声波 (US,5分钟) 治疗有效地显著减少肉垃圾中的微生物负载,病原体,酵母和菌.
- 这些非热方法提高了料的消化性,并减少了NDF含量,而不会对体外气体生产和发酵参数产生负面影响.
- 这项研究表明,欧盟和美国是可行的技术,可以提高用于反动物料的 brojiler litter 的安全性和营养质量.
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