Yeonhwa Park, assistant professor of food science at the University of Massachusetts Amherst, was the only food scientist on the 15-member national Committee on Nutrition Standards for National School Lunch and Breakfast Programs, sponsored by the U.S. Department of Agriculture.
Committee members recommend targets and standards to limit sodium and maximum calories, and encourage children to eat more fruits, vegetables, and whole grains. The recommendations would bring school meals in line with the latest Dietary Guidelines for Americans and Dietary Reference Intakes. The programs’ current nutrition standards and meal requirements are based on the 1995 dietary guidelines and the 1989 recommended dietary allowances.
UMass Amherst’s Park brought special expertise to the panel in two areas ¯ how to reduce sodium content and how to increase the amount of whole grains in foods in school breakfast and lunch in a form that students will accept and at an affordable price.
In the case of whole grains, research shows there is good acceptance among school-age children for certain grain products to contain up to 70 percent whole grain, she says. However, due to their limited availability and cost at present, the panel recommended that schools try to reach a target goal of at least 50 percent whole-grain-rich content in school lunches and breakfasts within three years of final requirements being adopted for school meals.
For sodium, the problem is that reducing it means foods taste different and are less likely to be accepted by children. Thus the panel recommended a stepwise reduction over the next 10 years, with a goal of an approximate 10 percent decrease for every two-year period. For example, recent data show that a typical high school lunch contains around 1,600 milligrams of sodium. The report recommends that lunches for high school students should eventually contain no more than 740 mg. The committee recognized that consumers are less likely to detect incremental changes, and it is unrealistic to expect food preparers to make rapid, dramatic changes and still produce meals children will eat.
Park says, “We hope industry will also respond and that students will accept substitutes. We thought the gradual reduction of sodium over ten years was reasonable and worth a try.”
For the first time, the committee also set maximum calorie levels. Lunches should not exceed 650 calories for students in grades K-five, 700 for children in grades 6–8, and 850 for those in grades 9–12. Breakfast calories should not exceed 500, 550 and 600 respectively for these grade groups.
According to the IOM, the National School Lunch Program is available in 99 percent of United States public schools and in 83 percent of private and public schools combined. The School Breakfast Program is available in 85 percent of public schools. About 30.6 million school children, 60 percent, participated daily in the school lunch program in fiscal year 2007, and 10.1 million children ate school breakfasts. Participating schools served about 5.1 billion lunches and 1.7 billion breakfasts that year.
As the report also acknowledges, implementing the recommendations will likely raise the costs of providing school meals ¯ particularly breakfasts ¯ mainly because of increased fruit, vegetables and whole-grain foods to be served. A combination of higher federal meal reimbursement, capital investment and additional money for training food service operators will be needed to make the necessary changes in school cafeterias.
The amount of vegetables offered should increase to 3/4 cup per day for grades K-eight, and 1 cup per day for grades nine-12. Schools should offer starchy vegetables such as potatoes less often and provide at least 1/2 cup each of green leafy vegetables, orange vegetables, and legumes per week. Students should be provided 1 cup of 1 percent or nonfat milk at breakfast and at lunch each day. This will help lower calories.
The amount of meat or meat alternatives in lunches should be 2 ounces on most days for all grades, but schools should have the flexibility to provide greater amounts to students in higher grades. The amount of meat or meat alternatives in breakfasts should be 1 ounce per day for children in grades K-eight and 2 ounces on most days for high school students.
Schools that allow students to decline individual items rather than take a whole meal should require them to take at least one serving of fruits or vegetables at each meal. The meal programs currently have no such requirements. The amount of fruit offered in breakfasts should increase to 1 cup per day for all grades and in lunches should increase to 1 cup per day for students in grades nine-12. No more than half the fruit schools provide should be in the form of juice.
The IOM recommended nutrition standards for food and beverages available a la carte in school stores and vending machines, which compete with school meals, in a 2008 report, Nutrition Standards for Foods in Schools.
Yeonhwa Park | Newswise Science News
Another reason to exercise: Burning bone fat -- a key to better bone health
19.05.2017 | University of North Carolina Health Care
Disrupted fat breakdown in the brain makes mice dumb
19.05.2017 | Rheinische Friedrich-Wilhelms-Universität Bonn
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
For the first time, scientists have succeeded in studying the strength of hydrogen bonds in a single molecule using an atomic force microscope. Researchers from the University of Basel’s Swiss Nanoscience Institute network have reported the results in the journal Science Advances.
Hydrogen is the most common element in the universe and is an integral part of almost all organic compounds. Molecules and sections of macromolecules are...
22.05.2017 | Event News
17.05.2017 | Event News
16.05.2017 | Event News
22.05.2017 | Materials Sciences
22.05.2017 | Life Sciences
22.05.2017 | Physics and Astronomy