BHNRCBeltsville Human Nutrition Research Center
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Also at the BHNRC, Solano-Aguilar has worked on a series of studies showing that the pig is instrumental as a model for human obesity-related research.
Using swine as a biomedical research model was useful for studying metabolic effects induced by a high-fat diet, says Joseph Urban, a coauthor at the BHNRC laboratory who initiated a multi-institute cooperative agreement with the Finnish scientists.
However, realizing the need for further studies on oolong tea with more precise measurement capabilities, Suntory entered into this joint research project with BHNRC because it is one of the six human nutrition research centers within the Department of Agriculture and more specifically the facility focuses on adult nutrition.
These studies point to a reason that a single caloric-value number, or energy density, based on assumed digestibility for all three macronutrients, particularly fats due to their higher number of calories per gram, is not totally appropriate for all foods," says BHNRC director John Milner.
The BHNRC team found a significant chemical variance across the range of green tea dietary supplements they sampled.
Switching to fresh fruit, the BHNRC "Rio Red Grapefruit" study showed that MS fingerprinting, when combined with a pattern-recognition method called "ANOVA-PCA," could clearly establish that there are chemical differences between grapefruit samples in terms of growing year, harvest time, and farming method (conventional or organic).
Other BHNRC studies are showing that HRMS fingerprinting, when combined with chemical and statistical pattern methods called ANOVA-Principal Component Analysis, can clearly establish chemical differences between food samples in terms of growing year and harvest time (early, mid, and late season).
They continuously monitor the food supply using annual data from the BHNRC national "What We Eat in America" survey and
Wallace Beltsville Agricultural Research Center, where BHNRC is located.
The BHNRC team next prepared a list of foods to be sampled and analyzed.
These ARS data runs were used by the advisory committee to validate conclusions previously drawn from much older data--or to provide support for new projections," says Pamela Pehrsson, a nutritionist at BHNRC.
In our previous human feeding studies, consumption of soluble fiber from barley significantly improved several risk factors for cardiovascular disease and diabetes," says Kay Behall, a BHNRC chemist.