Summary
Yellow grease was stabilized with varying quantities of BHA, BHT, and propyl gallate under laboratory conditions. Propyl gallate was the best antioxidant with BHA a close second.
Yellow grease was stabilized with mixtures of BHA and citric acid; BHA, propyl gallate, and citric acid; and BHA and BHT under laboratory conditions. The BHA‐citric acid mix proved to be the best mixture.
Grease was stabilized by adding various antioxidant mixtures before and after rendering. It was found better to add the antioxidant after rendering. Propyl gallate showed almost no carry‐through properties. It was also shown possible to add the citric acid before rendering and the antioxidant after rendering.
It was found that extra citric acid (.1 to .5%) added with an antioxidant increased the effectiveness of the antioxidant when greases of low stability were encountered. The iron content of the initial grease seems to have some bearing on the ease with which it could be stabilized.
Summary
The use of a dispersing agent to expand the surface area, thus providing an increase in reactivity of fats and oils under the conditions of the test, has been investigated. This dispersion technique permits the testing of a wider range of products, decreases the test time, and results in sharper end‐points. These improvements should serve to increase the applicability of the Oxygen Bomb Method as a tool for oxidation studies and quality control in the food industry. A general comparison of the Oxygen Bomb Method with the AOM and Schaal Oven Method has been presented to illustrate the relationship between results obtained by these various methods. The dispersion technique has been combined with previously established bomb techniques, and procedures for testing a wide variety of fats, oils and food products by the Oxygen Bomb Method are suggested.
Uran NH.NOa Uran NH4NO3 54.0 lb. N applied 4/13, 0.93 inch rain on 4/18, cut 5/27 12.9 27.21 7.1 11.5' Refertilized 45.3 lb. N on 6/17, 3.50 inches rain 6/18, cut 7/20 Area B 16.8 18.0 18.9 24.41 (Adjacent to A) 45.1 lb. N applied 4/22, 0.10 inch rain immediately, 1.03 inches rain 4/26, cut 5/27 Refertilized 44.7 lb. N on 6/24, 1.83 inches
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.