Untersuchungen über den Einsatz von Rapsextraktionsschrot (Erglu) bei Schweinen

Studies on the Use of Extracted Rapeseed Meal (Erglu) in Feeding Pigs Extracted rapeseed meal of the Erglu variety (low in erucic acid and glucosinolate content) was evaluated as protein feedstuff in growing pigs. In a starting ration (step 0) containing soybean (18%) and barley (72%) the extracted soybean meal was successively exchanged by an equivalent amount of protein from extracted rapeseed meal up to a level of rapeseed meal (24.6%) and barley (65.4%) (step 6). Growth was similar in all experimental groups. However, feed consumption and feed requirement increased with increasing proportions of rapeseed owing to lower content of utilizable energy in extracted rapeseed meal. No effect due to feeding was found with regard to quality of the slaughtered meat, whereas a linear increase in the size of liver and thyroid was found with increasing proportions of rapeseed in the ration.     

Studien zur Glyceridstruktur von Fetten I: Vergleichende Untersuchungen an Modellsubstanzen über den Einsatz von Pankreaslipase und Methylmagnesiumbromid zur strukturspezifischen Triglyceridspaltung

Studies on the Glyceride Structure of Fats I: Comparative Studies with Model Substances on the Use of Pancreas Lipase and Methyl Magnesium Bromide for the Stereospecific Cleavage of Triglycerides Using model substances the optimum conditions of reaction are determined for the stereospecific cleavage of triglycerides by pancreas lipase and methyl magnesium bromide. Studies with pancreas lipase showed that this enzyme having a strict positional specificity attacks the primary ester bonds (1- and 3-positions), however, unsaturated and short chain fatty acids are cleaved more easily than the saturated fatty acids. Isomerization of the partial glycerides has not been detected. Studies with methyl magnesium bromide revealed that the Grignard reagent does not have any positional specificity in the cleavage of the fatty acids. In the recommended procedure 1,2- and 1,3-diglycerides, 1- and 2-monoglycerides as well as tert. alcohols are formed. A ratio of 2:1 between 1,2- and 1,3-diglycerides correspond to the secondary positions of the triglyceride molecule. Even in this case isomerization of the partial glycerides has not been detected.