UC Food Blog
Carl Winter has been called the “Elvis of E. coli” and the “Sinatra of Salmonella,” but you won’t find him headlining a lounge act in Las Vegas. Instead, the UC Davis food toxicologist crosses California – and the United States – to sing about a subject near and dear to him: food safety.
Combining science-based information with a synthesizer, Winter performs food safety music parodies such as “You Better Wash Your Hands” (from the Beatles’ “I Want To Hold Your Hand”) and “Don’t Be a Gambler” (from Kenny Rogers’ “The Gambler”). He also has created animated food safety music videos such as “Stomachache Tonight,” a parody of the Eagles’ “Heartache Tonight” that, ironically, recounts a time he got sick in Georgia while on tour performing about food safety.
Although a lot of food safety information exists already, food safety music is a great way to supplement the message, said Winter, who has produced parodies for nearly 15 years and distributed more than 20,000 copies of his CDs with songs about food safety, nutrition and pesticides. “We found people retain information better through music,” Winter said.
Food safety is a timely topic. The Food and Drug Administration just held meetings April 26 and 27 in Monterey County to discuss plans to develop a nationwide produce standard for growing, harvesting and packing fruits and vegetables. Foodborne diseases cause about 76 million illnesses in the United States each year, according to an estimate by the Centers for Disease Control and Prevention.
“We need to understand the science better,” said Winter, who directs UC Davis’ FoodSafe program. “We need to communicate better.”
Winter is doing his part to spread the word about food safety. He is in the middle of putting together a new CD for kids, with songs such as “Who Left the Food Out?” – a parody of the Baha Men’s “Who Let the Dogs Out?” – as well as some original music.
The lyrics may change, but the message remains the same: Wash your hands, avoid cross contamination, cook meat to proper temperatures and refrigerate leftovers promptly. It’s important to eat a balanced diet and take as much control over your foods as you can, Winter said. Eat fruits and vegetables – just wash them first. And enjoy Winter’s songs. For more information, visit Winter’s home page at http://foodsafe.ucdavis.edu and his YouTube page at www.youtube.com/foodsafetymusic.
Home cooks know the secret to peeling tomatoes is a quick dip in hot water to loosen the skins. It takes a lot of water (and heating energy) to peel three million pounds of processing tomatoes in California each year. New UC Davis research is fine-tuning a novel way of peeling all those tomatoes with almost no water — using infrared heat.
Two methods are used to remove skins in processed tomatoes — a hot water/lye dip, or steam. The dip method uses a lot of water, a lot of energy, and creates a lot of salts . . . which presents its own disposal problem. Steam treatment heats too much of the tomato, resulting in reduced yield and quality.
“The tomato processing industry has long been interested in finding a better way of peeling tomatoes,” says Dr. Zhongli Pan, a USDA researcher, and an adjunct professor at UC Davis. He found that peeling tomatoes with infrared heat eliminates lye use, greatly reduces water use, and results in better quality tomatoes.
Infrared heat is similar to heat from the sun and fireplaces. It allows for efficient heat transfer from the source to the product. Infrared heat has promising potential not only for dry-peeling tomatoes, peaches, and other produce, but also for blanching many fruits and vegetables before freezing, such as apples and “baby” carrots.
Pan and his colleagues are building a pilot-scale infrared tomato heating device. The goal is to develop commercial-scale guidelines for peeling tomatoes and other products with infrared heat. As California's water resources dwindle, new technologies such as this should reduce our reliance on water.
Higher-quality pizza and tomato sauces, and many other food products may appear on our tables if infrared heat can be adopted by the food-processing industry. The secondary impact on water conservation will benefit us all.
(This article was condensed from UC Davis’ “CA&ES Outlook” magazine, fall/winter 2009, page 10.)
Last week (April 21, 2010) the Institute of Medicine issued an official report claiming that Americans consume too much salt and urging that new government standards be established for "acceptable sodium content" in foods. Two UC Davis nutrition experts disagree.
In November, Judith Stern, a professor of nutrition and internal medicine, and David McCarron, an adjunct nutrition professor, both at UC Davis, published a study in the Clinical Journal of the American Society of Nephrology that questioned the scientific logic and feasibility of broadly limiting salt intake in humans. (See journal article online.)
After examining data from sodium intake studies worldwide and a critical body of neuroscience research on sodium appetite (innate behaviors that drive us to consume salt), Stern and McCarron found compelling evidence indicating that humans naturally regulate their salt intake within a narrowly defined physiologic range. They found that Americans' average salt intake falls well within this range.
They suggest that government-led attempts to nationally control salt intake are simplistic, misguided, and not based in science and, instead, advise that individuals who are at special risk for high blood pressure and related diseases consult their physicians for nutritional advice, including appropriate levels of salt consumption.
(To view a flash video and UC Davis press release from October 2009, click here.)Nutrition Journal.
The review, written by three Chico State professors and UC Cooperative Extension livestock advisors Glenn Nader and Stephanie Larson, says the diet of exclusively grass gives beef a higher amount of Vitamin A and E precursors, boosts cancer-fighting antioxidants and reduces overall fat content.
"However, consumers should be aware that the differences in (fatty acid) content will also give grass-fed beef a distinct grass flavor and unique cooking qualities," the researchers wrote
In addition, the fat from grass-finished beef may have a yellowish appearance from the elevated carotenoid content. However, the slight changes in taste and appearance may be well worth getting used to.
Along with improved nutrients and lower fat in grass-fed beef, the product has a healthier lipid profile than its conventional counterpart. Health professionals worldwide recommend reduced consumption of saturated fat, trans fat and cholesterol. Grass-fed beef helps consumers meet the recommendation.
Raising cattle on the range also results in an improved omega-3/omega-6 fatty acid ratio in the beef, the authors said. A healthy diet should consist of roughly one to four times more omega-6 fatty acids than omega-3 fatty acids. However, the typical American diet tends to contain 11 to 30 times more omega-6 than omega -3, a phenomenon that may be a significant factor in the rising rate of inflammatory disorders in the United States.
Cooking grass-fed beef to perfection requires a few adjustments. For example, because it is low in fat, it should be coated with extra virgin olive oil, truffle oil or another light oil to enhance flavor and improve browning. The high protein and low fat levels mean the beef will usually require 30 percent less cooking time.
More cooking instructions plus information about grass-fed beef's health benefits, niche marketing, labeling and cost of production are available on the Grass-Fed Beef Web page, developed by the UC and Chico State researchers who wrote the research review for Nutrition.
The Africa Nutributter studies found that children preferred a sweet paste, but the scientists believe regional flavors may make the supplement more appealing. For Guatemala, they plan a cinnamon-flavored Nutributter; for Bangledesh, the paste will be flavored with cumin and cardamom.
UC Davis nutrition professor Kathryn Dewey, who leads the project, said it remains to be seen whether Nutributter will be adapted for American consumers.
“I personally think it is marketable,” she said.
Each four-teaspoon serving of Nutributter paste, which comes in a ketchup-packet-like pouch, contains 40 essential vitamins and minerals. Unlike most other nutrient supplements, the product also provides 120 calories of energy plus protein and essential fatty acids. Nutributter is not meant as a replacement for local foods or breast milk, but rather to be added to youngsters’ and pregnant mothers’ traditional diets.
"More than 3 million children die each year of malnutrition due not just to a lack of calories, but also to poor diet quality, particularly insufficient intake of micronutrients like zinc and iron, which are so critical to healthy growth and development," Dewey said.
The idea for the nutrition supplement came from the successful use of Plumpy'nut, a peanut-based food developed by French researchers for famine relief. Each Plumpy-nut packet has 500 calories and children can gain 1 to 2 pounds a week by eating it twice daily. Plumpy-nut is meant to temporarily serve as the sole food source in emergency situations.
The UC Davis Nutributter team heads the International Lipid-based Nutrient Supplements Project (iLiNS). Last year, the project won a $16 million Bill and Melinda Gates Foundation grant. A 2008 UC Davis news release announcing the Gates Foundation grant gives more details about Nutributter and its use in African nations. More information is also available on the iLiNS Web site.