In a comprehensive safety evaluation that offers reassurance to home cooks across the region, the Macau Consumer Council has released test results confirming that 10 widely available pre-packaged broths and soups contain no detectable preservatives and comply fully with legal limits for heavy metal contamination. The investigation, conducted earlier this year, targeted products from familiar household names including Swanson, Campbell’s, Knorr, and Heinz, addressing long-standing consumer concerns about what exactly lies inside those convenient cartons and cans.
Rigorous Testing Targets Two Key Health Risks
The Macau Consumer Council purchased samples from local supermarkets, selecting products with origins spanning mainland China, Australia, France, and Taiwan. The testing protocol focused on two common preservatives—sorbic acid and benzoic acid—alongside tin, a heavy metal particularly relevant to canned food products.
According to the Macau Municipal Affairs Bureau’s food safety information portal, tin is a metallic element that can migrate from the inner lining of metal cans into food contents over time, especially in acidic environments. Excessive tin consumption can trigger gastrointestinal distress including nausea, abdominal cramps, vomiting, and diarrhea, with prolonged exposure posing more serious health risks.
“These two preservatives are permitted within regulated limits and generally pose no significant health concerns at authorized doses,” noted the Council’s report. “However, excessive intake can still increase the metabolic burden on the body.”
All 10 Samples Pass With Flying Colors
The results delivered a collective sigh of relief for busy families who rely on these time-saving staples. Not a single sample showed traces of sorbic acid or benzoic acid, and all tin levels fell well within Macau’s stringent regulatory thresholds.
The tested products included:
- Campbell’s Condensed Cream of Chicken Soup (Australia)
- Campbell’s Condensed Ham and Corn Soup (Australia)
- Eu Yan Sang Octopus, Lotus Root, Fish Maw, and Pork Soup (Taiwan)
- Heinz Clear Chicken Broth (France)
- Red Plum Oxtail Soup (Mainland China)
- Treasure Brand Oxtail Soup (Mainland China)
- Knorr Soup Base Pork Bone Broth (Mainland China)
- On Kee Winter Melton and Pork Rib Soup (Mainland China)
- Fresh Box Mushroom Chicken Soup (Taiwan)
- Swanson Clear Chicken Broth (Australia)
Expert Tips for Safe Selection and Storage
While the products passed manufacturing safety standards, the Council emphasized that consumer handling plays a crucial role in maintaining food safety. Here are three actionable recommendations:
- Choose reputable retailers and inspect packaging carefully. Avoid purchasing cans showing rust, dents, swelling, or any cartons with leaks or damage. These defects can compromise the product’s integrity.
- Read labels thoroughly. Check both the ingredient list and expiration date. Whenever possible, select products with fewer additives and simpler ingredient profiles.
- Store leftovers correctly. This is perhaps the most critical tip. Never place leftover broth directly in the refrigerator inside its original metal can. Instead, transfer the remaining liquid into a non-metallic, airtight container—such as glass or food-grade plastic—before refrigerating. Consume within a few days to prevent metal leaching and bacterial growth.
Broader Implications for Consumer Awareness
This investigation forms part of a larger pattern of consumer advocacy across the region. Recent tests have examined everything from the genetic composition of fish balls and meatballs to preservative levels in soy sauce and foreign matter in pickled vegetables. One particularly startling finding revealed that some “beef balls” contained nearly 90 percent chicken meat, while “lobster balls” contained no lobster at all.
For Hong Kong families who increasingly rely on pre-packaged broths for quick meal preparation, the Macau findings provide welcome clarity. The next time you reach for that carton of chicken broth or can of oxtail soup, you can do so with greater confidence—provided you follow the basic storage guidelines that protect both flavor and health.
As consumer advocacy groups continue to push for transparency, the message remains clear: informed shoppers make safer choices, and a few extra seconds examining packaging can make all the difference in your family’s wellbeing.