STTR Phase I: Feasibility of multi-layer microplate test for rapid detection and enumeration of Salmonella spp. in raw poultry and processing environment samples
STTR 第一阶段:用于快速检测和计数沙门氏菌的多层微孔板测试的可行性。
基本信息
- 批准号:2135699
- 负责人:
- 金额:$ 25.6万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2022
- 资助国家:美国
- 起止时间:2022-04-01 至 2023-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The broader impact of this Small Business Technology Transfer (STTR) Phase I project will be reduced incidence of infections and outbreaks from Salmonella, one of the most frequently reported bacterial causes of food-borne illness in the US. Each year Salmonella causes over 1.35 M illnesses and 26,500 hospitalizations, with 20 percent of infections attributable to poultry. Given that the number of Salmonella illnesses has increased about 30 percent over the past decade, the US poultry industry - the world's largest producer and the second largest exporter of poultry meat - must minimize the risk of Salmonella infection. The market for the Salmonella microplate test with US poultry processors and the associated sanitation service providers is estimated at $240 M.This project develops and implements a rapid, simple and low-cost test for Salmonella detection and quantification in 15 hours with no pre-enrichment step. It enables processors to run on-site screening for Salmonella in the processing environment and on raw poultry samples to get faster results, enabling faster corrective action to minimize Salmonella and reducing downstream risks to consumers. The proposed project will show the feasibility of a multi-layer, 96-well microplate test method for Salmonella detection and enumeration by demonstrating: ≥ 90% sensitivity (true positive) and specificity (true negative) with pure cultures and samples of the processing environment and raw poultry; detection in 15 (± 2) hours, with no pre-enrichment; and stability: ≥ 60 days. The test base formulation has shown ≥ 95% sensitivity and specificity with 7 pure cultures of Salmonella and 5 non-target organisms, and detection in 15 hours (± 2) hours. The main technical challenges of this research are achieving desired sensitivity, specificity, speed and stability across 35 Salmonella organisms and 20 non-targets, with a variety of target matrices, in a method easy to use and cost-effective. Controlling for non-target organisms requires evaluation of selective and differential agents as well as sequential and/or preferred use of nutrients by target and non-target organisms in the culturing environment of the microplate. The following methods will be used to optimize test performance: (a) Inclusivity testing; (b) Exclusivity testing; (c) Matrix testing; (d) Stability testing; and (e) Reproducibility testing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
这一小企业技术转让(STTR)第一阶段项目的更广泛影响将是减少沙门氏菌感染和爆发的发生率,沙门氏菌是美国食源性疾病最常见的细菌原因之一。每年沙门氏菌导致超过135万人患病,26,500人住院,其中20%的感染可归因于家禽。鉴于沙门氏菌疾病的数量在过去十年中增加了约30%,美国家禽业-世界上最大的生产商和第二大禽肉出口商-必须将沙门氏菌感染的风险降至最低。美国家禽加工商和相关卫生服务提供商的沙门氏菌微孔板测试市场估计为2.4亿美元。该项目开发并实施了一种快速,简单和低成本的沙门氏菌检测和定量测试,在15小时内没有预富集步骤。它使加工商能够在加工环境和生家禽样品中进行沙门氏菌现场筛查,以更快地获得结果,从而能够更快地采取纠正措施,最大限度地减少沙门氏菌并降低消费者的下游风险。该项目将通过以下方式证明用于沙门氏菌检测和计数的多层96孔微孔板检测方法的可行性:纯培养物和加工环境及生禽样品的灵敏度(真阳性)和特异性(真阴性)≥ 90%;在15(± 2)小时内检测,无需预富集;稳定性:≥ 60天。试验基础制剂对7种沙门氏菌纯培养物和5种非靶微生物的灵敏度和特异性≥ 95%,并在15小时(± 2)小时内检出。这项研究的主要技术挑战是在35种沙门氏菌和20种非靶标中实现所需的灵敏度,特异性,速度和稳定性,以及各种靶标基质,方法易于使用和具有成本效益。控制非靶生物需要评估选择性和差异性试剂以及在微孔板的培养环境中靶生物和非靶生物对营养物的顺序和/或优选使用。以下方法将用于优化测试性能:(a)包容性测试;(B)排他性测试;(c)矩阵测试;(d)稳定性测试;(e)再现性测试。该奖项反映了NSF的法定使命,并被认为值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估来支持。
项目成果
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Chris Ramezanpour其他文献
Chris Ramezanpour的其他文献
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