Canadian researchers, writing in the journal Angewandte Chemie International Edition, show how their fluorescent test system – DNAzymes – designed to track the DNA trails of pathogens does not require the time consuming steps and specialized equipment typically used in standard microbial tests.
"Current methods of foodborne bacterial detection take time. The five days it takes to detect listeria, for example, can translate into an outbreak that costs lives.
We have developed a universal test that uses less complex procedures but still generates precise and accurate results," said lead researcher, biochemist Yingfu Li.
Bacteria have their own spoor, leaving behind DNA trails of bacterial 'droppings'. So Li explained that, based on this fact, his team developed a testing method that works by tracking these metabolic by-products with molecular beacons that light up when they detect the DNA sequence left behind.
He said the DNAzymes method can be used to set up a simple ‘mix-and-read’ bacterial detection assay.
"More importantly, we have demonstrated that our method has the capability to detect a single live cell,” said the authors, who stressed that the ability to to do so is a hallmark of a method to detect food-borne pathogens.
Furthermore, the Canadian researchers report that although their method was demonstrated using a nonpathogenic strain of E. coli, it can “easily be implemented for pathogenic bacteria and viruses.”
They added that while the demonstrated assay used fluorescence as the reporting mechanism, the same DNAzyme probe could be used for the design of a colorimetric assay using a rolling circle amplification/organic dye strategy.
USDA testing call
There have been notable outbreaks of foodborne illnesses arising out of E.coli contamination of foods such as beef, spinach and dough in the
Last week saw the US Department of Agriculture (USDA) claim that 44 of the most serious food recalls in the US from 2007 to 2009 could have been prevented if the agency had had a ‘test and hold’ procedure in place for meat and poultry products during that period.
In light of this, the department’s Food Safety and Inspection Service, which inspects “billions of pounds of meat, poultry and processed egg products annually” has proposed that companies should hold meat and poultry products until inspectors have received foodborne pathogen test results, in an effort to reduce illness.
The American Meat Institute, which represents most of the meat processing sector in the
(seafood.vasep.com.vn) The year 2025 marked a pivotal milestone for Vietnam’s seafood industry in its restructuring process toward sustainability, transparency, and higher value creation, amid continued uncertainties in the global economic and trade environment. Prolonged inflation in major economies, the rising trend of trade protectionism, and increasingly stringent requirements related to environmental standards, traceability, and social responsibility have posed significant challenges to seafood production and exports. Nevertheless, overcoming these pressures, Vietnam’s seafood sector has gradually demonstrated its adaptability, maintained growth momentum, and laid an important foundation for the next stage of development.
(seafood.vasep.com.vn) Amid the increasingly evident impacts of drought and saltwater intrusion, the shrimp-rice production model in Ca Mau province continues to prove itself as a viable direction, contributing to higher farmer incomes, improved soil conditions and the promotion of ecological and sustainable agricultural development.
(seafood.vasep.com.vn) The management of fishing vessels, monitoring of fishing activities, and handling of violations in the fisheries sector in Lam Dong province have continued to be implemented in a synchronized and stringent manner, contributing to raising awareness of legal compliance among fishermen and aiming to end illegal, unreported and unregulated (IUU) fishing.
(seafood.vasep.com.vn) Can Tho’s fishery industry sustained steady growth in 2025 with total aquatic and marine output reaching nearly 783,000 tons, fulfilling 100% of the annual target. Aquaculture, capture fisheries and fishing fleet management were further strengthened, aiming for sustainable development in the coming years.
(seafood.vasep.com.vn) In 2025, Vietnam’s pangasius export turnover reached nearly USD 2.2 billion, up 8% year-on-year. This result indicates that pangasius exports maintained their growth momentum despite significant volatility in the global market environment. In December 2025, pangasius export value reached USD 200 million, up 10% compared to December 2024. This solid performance in the final month of the year reflects increased import demand for consumption and inventory replenishment in key markets.
(seafood.vasep.com.vn) In 2025, Vietnam’s tuna exports to Spain experienced significant fluctuations. According to Vietnam Customs, during the first 11 months of 2025, export turnover for the first 11 months of the year edged up by 0.3% year-on-year, reaching nearly $15 million.
(seafood.vasep.com.vn) Deputy Prime Minister Bui Thanh Son has signed Decision No. 16/QD-TTg, dated January 5, 2026, approving the implementation plan for the Vietnam-Israel Free Trade Agreement (VIFTA). Under the plan, in the coming period, ministries, ministerial-level agencies, government-affiliated entities and People’s Committees of provinces and centrally-run cities must institutionalize and execute tasks focused on the dissemination of information regarding VIFTA and the Israeli market; legislative and institutional development, as well as enhancing competitiveness and human resource growth...
(seafood.vasep.com.vn) Beyond achieving double-digit growth, Vietnam’s fish cake and surimi exports are showing a notable year-end "inflection point": the EU his accelerating with nearly twofold growth, China & Hong Kong are rising sharply, while the largest market, South Korea, signaled a slowdown in November. According to Vietnam Customs data, export turnover of fish cake and surimi reached $327 million in the first 11 months of 2025, up 22% year-on-year; November 2025 alone accounted for $35 million, marking a 5% increase. This serves as a critical foundation for exporters to reassess market structures and competitive intensity while finalizing order strategies for 2026.
(seafood.vasep.com.vn) Ca Mau, widely regarded as the nation’s “shrimp capital”, continued its strong performance in 2025 as shrimp output reached nearly 600,000 tons, maintaining its position as Vietnam’s leading shrimp-producing locality.
(seafood.vasep.com.vn) On December 29, 2025, at the 2025 Pangasius Industry Review Conference held in Can Tho City, the Vietnam Pangasius Association announced that fingerling prices have surged to record levels due to acute supply shortages.
VASEP - HIỆP HỘI CHẾ BIẾN VÀ XUẤT KHẨU THỦY SẢN VIỆT NAM
Chịu trách nhiệm: Ông Nguyễn Hoài Nam - Phó Tổng thư ký Hiệp hội
Đơn vị vận hành trang tin điện tử: Trung tâm VASEP.PRO
Trưởng Ban Biên tập: Bà Phùng Thị Kim Thu
Giấy phép hoạt động Trang thông tin điện tử tổng hợp số 138/GP-TTĐT, ngày 01/10/2013 của Bộ Thông tin và Truyền thông
Tel: (+84 24) 3.7715055 – (ext.203); email: kimthu@vasep.com.vn
Trụ sở: Số 7 đường Nguyễn Quý Cảnh, Phường An Phú, Quận 2, Tp.Hồ Chí Minh
Tel: (+84) 28.628.10430 - Fax: (+84) 28.628.10437 - Email: vasephcm@vasep.com.vn
VPĐD: số 10, Nguyễn Công Hoan, Ngọc Khánh, Ba Đình, Hà Nội
Tel: (+84 24) 3.7715055 - Fax: (+84 24) 37715084 - Email: vasephn@vasep.com.vn