China’s Melamine Woes Extend Into Seafood
By Don Lee and Tiffany Hsu, Los Angeles Times
Friday, December 26, 2008 3:38 PM CST
SHANGHAI, China - Melamine in Chinese-produced milk powder has sickened hundreds of thousands of children and added to a growing list of made-in-China foods banned across the globe. Now, some scientists and consumer advocates are raising concerns that fish from China might also be contaminated with the industrial chemical.
China is the world’s largest producer of farm-raised seafood, exporting billions of dollars worth of shrimp, catfish, tilapia, salmon and other fish. The U.S. imported about $2 billion of seafood products from China in 2007, almost double the volume of four years earlier, according to the U.S. Department of Agriculture.
But industry experts and businesspeople in China that say melamine has been routinely added into fish and animal feed to artificially boost protein readings. And new research suggests that, unlike in cows and pigs, the edible flesh in fish that have been fed melamine contains residue of the nitrogen-rich substance.
Melamine, commonly used in plastics and dishware, can lead to urinary problems such as kidney stones and even renal failure. Last year pet foods made with melamine-laced ingredients from China sickened and killed thousands of dogs and cats in the U.S. This year, infant formula tainted with the chemical has been linked to illness in 294,000 small children and six deaths in China, according to China’s Ministry of Health.
In the U.S., fish from China can be found everywhere from supermarkets’ frozen food to candle-lit tables at posh restaurants.
“China’s a big place, and it does a lot of processing, and cheaply too,” said Brian Dedmon, purchasing manager for the Fish King distribution plant in Burbank, Calif.
Fish King, which supplies hundreds of restaurants and has a retail store, says it buys processed snow crab meat, squid and other seafood from China both to both meet market demand and because the price is competitive. Dedmon said the company relies on government inspections, its importers, and its own experience to insure the fish it buys is safe.
“We’re definitely concerned about melamine, but by the time the fish gets to us, health issues should’ve been taken care of by the government agencies and brokers that we go through,” he said.
But while some American fish importers are voluntarily testing for melamine, the U.S. Food and Drug Administration, which is responsible for ensuring the safety of imported fish, currently doesn’t require seafood products to be screened for melamine. Yet research from its own scientists have raised a warning flag.
Laboratory studies in the U.S. of melamine-fed catfish, trout, tilapia and salmon by the FDA’s Animal Drugs Research Center found that fish tissues had melamine concentrations of up to 200 parts per million. That’s 80 times the maximum “tolerable” amount set by the FDA for safe consumption.
Iddya Karunasagar, a United Nations’ fish-product safety expert in Rome, said that the FDA’s research suggests that fish would have to ingest large amounts of melamine to pose a health threat to humans, something that he considered unlikely. However, he said there was no data on melamine levels in Chinese-made fish and animal feed.
Other scientists said testing of melamine in farm-raised fish from China should be made mandatory for precisely that reason: a dearth of information about melamine levels in Chinese feed and fish.
“That’s the problem; no one has a clue how much concentration and for how long” fish from China have ingested melamine, said Jim Riviere, director of chemical toxicology research at North Carolina State University. “There’s an issue of relative human safety,” he said. “It would be prudent to screen for melamine.”
An FDA spokesperson wouldn’t comment on why Chinese-produced seafood doesn’t have to be analyzed for melamine when it’s imported here. Nor were FDA researchers made available to comment on their agency’s findings, reported recently in the Journal of Agricultural and Food Chemistry.
Research undertaken by Riviere and others show that melamine in feed consumed by pigs and cows is excreted in the urine or otherwise flushed out, leaving virtually no trace of it in the muscle or meat of the animals. But fish appear to be different, toxicologists say.
Fang Shijun, who has monitored the melamine problem for several years, says he believes the adulterated products are now being supplied only by small operators, which abound in China. Like those who added melamine to milk and diluted it with water to increase profits, feed businesses can sell more by substituting melamine for real protein sources, especially with raw material costs having soared in recent years.
“It is impossible to calculate how many of them have done that,” said Fang, manager of feed research at Shanghai eFeedLink Information Technology, an agriculture consulting and research firm. U.S. importers such as Boston-based Stavis Seafoods, which sells products under the brand Foods from the Sea, are taking precautions.
“It’s our reputation behind it,” said company chairman Richard Stavis. Thus far, he said, the testing has not turned up positive results for melamine in the catfish and tilapia that Stavis buys from China.
U.S. importers have for some years been testing for a variety of antibiotics and substances, including the suspected carcinogen malachite green, which some Chinese fish farms use to control disease.
Since last year, the FDA has been restricting entry of shrimp, catfish, dace, eel and basa from China unless those shipments come with an independent lab report certifying the seafood is free from such additives. Melamine isn’t included.
The Chinese government, facing increasing pressure from the public, has begun to crack down on melamine suppliers and has widened inspections to include feed. And many Chinese exporters of farmed fish say government inspectors are coming around more often and examining samples.
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But shipments of filthy and contaminated fish from China continue to be detained at U.S. ports, exposing holes in a food-safety system that analysts say are undermined by a lack of resources, corruption and unscrupulous businesses that will sometimes mislabel or reroute goods through other countries.
FDA officials last month opened three offices in China, part of a strategy to deploy agency staff in countries where many of American foods now originate and where they can work with local inspectors and industry.
“We cannot inspect our way to import safety; we have to roll our borders back and work with producers and have (their products) certified by people we trust,” said Michael Leavitt, secretary of the U.S. Health and Human Services, under which the FDA operates, during a visit to China last month.
Karunasagar, the United Nations’ fishery expert, said governments in China and elsewhere need to tackle the problem at the source. “More than the fish, we should monitor melamine in the feed.”
But that’s easier said than done. In the U.S., commercial fish farms have to use feed from a handful of approved suppliers, but in China, there may be hundreds of thousands of sources for feed, said Steve Dickinson, an American attorney in China’s coastal city of Qingdao who ran a salmon-farming business in Washington state.
Melamine has “infected the whole system in China,” he said.
More than 15 feed suppliers in various parts of China were contacted for this story. Most of them declined to comment or said they themselves didn’t add melamine. But some of them said the practice of spiking feed with it has been going on for at least the last five to six years, with inspectors checking some types of feed products more tightly than others.
“It is not so regulated, for example, in the fish powder industry,” said Zhuge Fulai, manager of Lianfeng Protein Feed Plant in Shandong province. Fang, the feed research manager in Shanghai, says adulterating feed was particularly rampant in 2003 and 2004. He doubts that many feed suppliers today are adding melamine, given the awareness and the government’s publicized crackdown, but neither he nor anyone else thinks the problem has been eradicated.
“We still need more government supervision,” Fang said. “We need to have more random checks and to fully execute regulations and standards.”
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whynow wrote on Jan 4, 2009 2:11 PM: