Effects of storage and processing on the nutritive value of certain Nigerian foods

Summary The effects of storage and processing on the nutritive value of two Nigerian foods-raw cowpea (Vigna unguiculata) flour and palm oil, have been investigated. Increased retention of both thiamine and riboflavin as a result of increased water activity (A_w) were recorded for cowpea flour stored for 6 months. A storage temperature of 5°C led to minimal losses of both vitamins in the stored flour. Differences in physico-chemical characteristics were observed between palm oil produced by the traditional method and that produced by a modern commercial method. Increasing A_w led to decreasing loss of unsaturation in the traditionally-produced palm oil during 4-week storage at ambient temperature (25°C).     

Effects of certain hydroxamic acids on virus replication

Résumé L'acide oxamyl-hydroxamique, l'acide salicylhydroxamique et l'acétoxyoxamide inhibent la reproduction du bactériophage T₄ dans l'Escherichia coli B. L'activité de chacun de ces composés était plus grande que celle de l'hydroxyurée dans le même système d'essai. De ce fait, une évaluation plus poussée de ces 3 agents ainsi que d'autres acides hydroxamiques dans une série de systèmes d'essai sur les virus paraît clairement indiquée.     

Effects of certain psychopharmaca on intraneuronal levels of 5-HT and catecholamines in the specific monoamine neurons of the rat brain

Zusammenfassung Die Zunahme von 5-HT, welche sich im Gehirn der Ratte nach Verabreichung von chemisch sehr verschiedenen Ganglienblockern vollzieht, konnte mit Hilfe einer hochempfindlichen histochemischen Methode auf spezifische 5-HT-Neuronen lokalisiert werden, deren Zellkörper, Axonen und Terminalen schnell ihren Amingehalt vermehren können. Bei den Katecholamin-Neuronen konnten keine deutlichen Veränderungen beobachtet werden. Tetrabenazine verursachen eine schnelle, totale Entleerung der Monoamindepots aller Teile der monoaminhaltigen Neuronen, gefolgt von einer schnellen Neubildung von Monoaminen¹⁶.

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This study was performed during tenure of a fellowship of the World Health Organization, 1964. Present address: Psychiatric Research Institute, Prague (Czechoslovakia).     

Effects of L-lysine administration on certain aspects of ascorbic acid metabolism in weanling rats

Summary L-lysine administration to male weanling rats at a dose of 110.4 mg (25% LD₅₀) per 100 g body weight per day for 15 days reduced the liver total ascorbic acid level. The biosynthesis as well as the degradation of L-ascorbic acid was diminished under these conditions. The fall in liver total ascorbic acid level after L-lysine administration was ascribed to its reduced synthesis.Acknowledgment. The authors are thankful to the Council of Scientific and Industrial Research, India, for providing Junior Research Fellowships to Miss J. Basu and Miss K. Sen Gupta.     

Cadmium in foods and the diet

Summary Information on the sources of cadmium in food are presented and the effects of raised environmental levels of cadmium on the concentration of cadmium in plant based foods, fish and shellfish, meat and offals, and dairy produce are discussed. Information is also presented on normal dietary intakes of cadmium and how these intakes may be elevated by environmental pollution or atypical dietary habits. The estimation of dietary intakes of cadmium using data about extreme intakes of specific foods is described.The author wishes to thank the Ministry of Agriculture, Fisheries and Food for permission to publish this paper.     

Cadmium in foods and the diet

Information on the sources of cadmium in food are presented and the effects of raised environmental levels of cadmium on the concentration of cadmium in plant based foods, fish and shellfish, meat and offals, and dairy produce are discussed. Information is also presented on normal dietary intakes of cadmium and how these intakes may be elevated by environmental pollution or atypical dietary habits. The estimation of dietary intakes of cadmium using data about extreme intakes of specific foods is described.     

Effects of electromagnetic field and lubricate condition on the surface quality of magnesium alloy billet during LFEC processing

The microstructures of the magnesium billets could be improved markedly by low-frequency electromagnetic casting(LFEC)processing.In fact,the low-frequency electromagnetic field(LFEF)also has favorite effect on the surface quality of billet.However,few public reports on the surface quality of LFEC magnesium billets could be found.Therefore,a new crystallizer with a metal internal sleeve together with a kind of lubricant was designed aiming at lowing surface turning quantity,and the effects of casting velocit...     

The effect of vasoactive agents on nutritive collateral circulation in rat muscles

Summary The relationship between the collateral and control nutritive blood flow (⁸⁶Rb) of the triceps muscle was not influenced by vasoactive agents (phenylephrine, angiotensin II, vasopressin) in the rat. Isolevine caused vasodilation only in the control muscle.     

Fixation of certain heterogenous antigenic substances on bacterial cells and endospores

Zusammenfassung Bakterielle Schüttelkulturen binden aus der Kulturflüssigkeit Hefeantigen, welches durch zweimaliges Waschen der Bakterien nicht entfernt werden kann.B. megaterium-Sporen werden durch Lysozymbehandlung von allen Resten der vegetativen Zellen befreit; sie binden das Enzym aber so stark, dass sie in Kaninchen, selbst nach fünfmaligem Waschen mit destilliertem Wasser, ausser Sporenantikörpern auch Lysozymantikörper produzieren.