Lipases are enzymes responsible for the conversion of triglycerides and other esterified substrates, they are involved in the basic metabolism of a wide number of organisms, from a simple microorganism and to mammals. They also have broad applicability in many fields from which industrial biotechnology, the production of cleaning agents, and pharmacy are the most important. The use of lipases in analytical chemistry where it can serve as a part of biosensors or bioassays is an application of growing interest and has become another important use. This review is focused on the description of lipases chemistry, their current applications and the methods for their assay measurement. Examples of bioassays and biosensors, including their physical and chemical principles, performance for specific substrates, and discussion of their relevance, are given in this work.
- Klíčová slova
- pH detekční metody, histochemické metody,
- MeSH
- acetylcholinesterasa * farmakologie fyziologie nedostatek škodlivé účinky MeSH
- biosenzitivní techniky metody normy přístrojové vybavení MeSH
- butyrylcholinesterasa * farmakologie fyziologie nedostatek škodlivé účinky MeSH
- chemické techniky analytické * využití MeSH
- cholinesterasové inhibitory MeSH
- cholinesterasy farmakologie fyziologie MeSH
- imunohistochemie metody normy přístrojové vybavení MeSH
- kolorimetrie metody normy přístrojové vybavení trendy MeSH
- lidé MeSH
- radiometrie metody normy přístrojové vybavení využití MeSH
- spektrofotometrie metody normy přístrojové vybavení MeSH
- titrace metody normy přístrojové vybavení MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
There is increased interest in the investigation and implementation of rapid screening methods for detection of pesticide residues. This study reports development of an immunostrip test for thiabendazole detection based on indirect competitive principle using carbon particles as a label. Nitrocellulose membrane strip was coated with a thiabendazole-protein conjugate in the defined test zone. In flow of an antibody-carbon complex and thiabendazole along the strip, the intensity of black colour formed in the test line reflected the thiabendazole concentration and semi-quantitative estimation could be carried out visually. The optimized test was accomplished within 10 min and the visual detection limit was achieved 0.25 ng mL(-1) of standard sample. Moreover, immunostrip was evaluated quantitatively using scanning densitometry. Based on standard curve, the detection limit of the proposed test was as low as 0.08+/-0.03 ng mL(-1) with an IC(50) value of 0.60+/-0.08 ng mL(-1) and a linear working range of 0.11-4.13 ng mL(-1). Results of testing precision, stability, and specificity demonstrated that the assay provided a reliable performance. This immunostrip was applied to analysis of spiked fruit juices in range of 0.05-5 mg L(-1). Matrix interferences were avoided by simple dilution of samples. Both visual and instrumental evaluations indicated a good agreement with results obtained by ELISA. Recoveries from juices were from 81.9 to 123.6% and relative standard deviations ranged from 9.9 to 19.3%. The developed strip offers potential as a useful rapid and simple method for screening of thiabendazole in fruit juices at levels far below the maximum residue limits.
- MeSH
- biosenzitivní techniky přístrojové vybavení normy statistika a číselné údaje MeSH
- ELISA MeSH
- imunoanalýza přístrojové vybavení normy statistika a číselné údaje MeSH
- koloidy MeSH
- kontaminace potravin analýza MeSH
- lidé MeSH
- maximální přípustná koncentrace MeSH
- nápoje analýza MeSH
- ovoce chemie MeSH
- protilátky MeSH
- rezidua pesticidů analýza imunologie MeSH
- thiabendazol analýza imunologie MeSH
- uhlík MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
- práce podpořená grantem MeSH
- srovnávací studie MeSH
