| Popis: |
As part of its long-standing program for providing representative data on the nutrient composition of foods, the U.S. Department of Agriculture is developing a Nutrient Data Bank which, compared with the past, will have a far greater input of data from industry, an increase in the amount of data available for computer use, and an increase in the speed of releasing data to the public. A data submission form has been developed for use by those wishing to contribute data to the data bank. A coding system for classifying and retrieving data is in preparation. When operational, the Data Bank should provide information of use in food labeling. To help in evaluating data to be included in the Data Bank, a comparison of analytical methods used in determining minerals was made. This review showed that results by emission spectroscopy frequently did not agree well with data from other methods. Proper calibration and care in making determinations are needed for all methods, and especially for emission spectroscopy. There is a need for more certified reference samples of foods, to be used in establishing the accuracy of analytical procedures. |
