PubMed · 6558691
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
U Rutkowska. 1983. [Trace elements in nutrition].. https://pubmed.ncbi.nlm.nih.gov/6558691/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
In this paper a method for the determination of plasticisers in food by gas chromatography-mass spectrometry with ion-trap mass detection is described. The plasticisers were quantified by an internal standard addition method using diisobutyl phthalate as the internal standard. Four selected food samples were spiked with nine different plasticisers at about 0.3 microgram/g. The recoveries of the plasticisers were in the range of 90 to 106%. The proposed method shows an improvement in precision and exhibits good linearity over a wide concentration range. The new method was applied to the analysis of real samples and the results were found to agree with those obtained using the well-established isotope dilution technique.
Food toxicology (FT) is an old science whose origins may go back to primitive humans. However, due to major environmental damage, daily market launches of new food products, and the analytical ability to detect ever small quantities of toxicants in foods, FT is also an ever-growing science with an enormous task ahead. With respect to trace elements, current research trends can be encompassed under the headings of detection, control, and toxicological evaluation. Under the heading detection, quality, sensitivity, speed, automation, and specificity for each food type are the characteristics currently sought when developing new methodologies. Under control, there is a great need for constant monitoring, on an international level, of the levels of trace elements present in foods; and for development and application of new methodologies to guarantee product and process safety. Under toxicological evaluation, information about the bioavailability of trace elements and consequently studies of the chemical species present in foods have top priority. The work still outstanding in the study of trace element FT is immense, because it is necessary to achieve a profound understanding of the toxicological characteristics of food products in relation to trace elements; to give information to food manufacturers that they can use to adapt their production so that it meets the requirements of international legislation and demands for quality and innocuousness on the part of the market and consumers; and to develop standards regulating the maximum content of trace elements, according to the content of the various species.
The physical and chemical changes that occur in foods during growth, harvest, processing, storage, preparation, and consumption are often very difficult to measure and quantify. Magnetic resonance imaging (MRI) is a pioneering technology, originally developed in the medical field, that is now being used in a large number of disciplines to study a wide variety of materials and processes. In food science, MRI techniques allow the interior of foods to be imaged noninvasively and nondestructively. These images can then be quantified to yield information about several processes and material properties, such as mass and heat transfer, fat and ice crystallization, gelation, water mobidity, composition and volume changes, food stability and maturation, flow behavior, and temperature. This article introduces the fundamental principles of MRI, presents some of the recent advances in MRI technology, and reviews some of the current applications of MRI in food science research.