A new method based on natural animal tissue porcine kidney as recognition element for chemiluminescence sensing of lactic acid is proposed in this paper. The principle for lactic acid sensing is that lactic acid is oxidized by oxygen under the catalysis of alpha-hydroxy acid oxidase in the tissue column to produce hydrogen peroxide, which can react with luminol in the presence of potassium ferricyanide to generate a CL signal. The experimental results show that the CL emission intensity was linear with lactic acid concentration in the range of 1-1000 micromol/L and the detection limit (3sigma) for lactic acid was 0.2 micromol/L. The biosensor could be used continuously for 6h with no significant changes in the response. More than 240 measurements were carried out during this time. A complete analysis, including sampling and washing, could be performed in 1.5 min with a relative standard deviation of 1.12% for 100 micromol/L lactic acid. The reproducibility among tissue columns was satisfactory (RSD among columns is less than 5%). The biosensor has been applied successfully to the analysis of lactic acid in plasma and milk samples.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bios.2004.10.029 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Improvement of lactic acidosis in pyruvate dehydrogenase complex deficiency using custom-made amino acid-based dialysate for peritoneal dialysis.
Pediatr Nephrol
January 2025
Department of Paediatrics, Queen Elizabeth Hospital, Hong Kong, China.
This case report presents a newborn with pyruvate dehydrogenase complex deficiency who developed significant lactic acidosis and acute kidney injury after birth. Peritoneal dialysis with glucose-based peritoneal dialysis fluid was initially started, but the patient had worsening hyperglycemia and lactic acidosis, likely related to excess glucose reabsorption with shunting to lactate due to the underlying metabolic disorder. As amino acid-based dialysis solution was not available in our formulary, a dialysis fluid was manually created with Vaminolact, which was commonly used in neonatal parenteral nutrition.
View Article and Find Full Text PDF3D bioprinted poly(lactic acid) scaffolds infused with curcumin-loaded nanostructured lipid carriers: a promising approach for skin regeneration.
Biomater Sci
January 2025
Electrochemical Process Engineering, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.
Nanotechnology and 3D bioprinted scaffolds are revolutionizing the field of wound healing and skin regeneration. By facilitating proper cellular movement and providing a customizable structure that replicates the extracellular matrix, such technologies not only expedite the healing process but also ensure the seamless integration of new skin layers, enhancing tissue repair and promoting overall cell growth. This study centres on the creation and assessment of a nanostructured lipid carrier containing curcumin (CNLC), which is integrated into a 3D bioprinted PLA scaffold system.
View Article and Find Full Text PDFKey bacterial vaginosis-associated bacteria influence each other's growth in biofilms in rich media and media simulating vaginal tract secretions.
Biofilm
June 2025
Centre of Biological Engineering (CEB), Laboratory of Research in Biofilms Rosário Oliveira (LIBRO), University of Minho, Braga, Portugal.
Bacterial vaginosis (BV) is a very common gynaecologic condition affecting women of reproductive age worldwide. BV is characterized by a depletion of lactic acid-producing species and an increase in strict and facultative anaerobic bacteria that develop a polymicrobial biofilm on the vaginal epithelium. Despite multiple decades of research, the etiology of this infection is still not clear.
View Article and Find Full Text PDFDetermination of insoluble calcium content in Cheddar, feta, Juustoleipa, and mozzarella cheeses using acid-base buffering curves.
JDS Commun
January 2025
Nutrition, Dietetics and Food Sciences Department, Utah State University, Logan, UT 84322.
The amount of colloidal calcium phosphate (CCP) complex associated with caseins (insoluble [INSOL] Ca) determines the body, texture, flavor, and breakdown of cheese constituents during aging. The continuous pH decline during cheesemaking because of lactic acid fermentation results in solubilization of INSOL Ca. Measuring INSOL Ca in such a dynamic and wide range pH system (6.
View Article and Find Full Text PDFComparative Analysis of Spacer Targets in CRISPR-Cas Systems of Starter Cultures.
Acta Naturae
January 2024
Higher School of Economics, Faculty of Biology and Biotechnology, Moscow, 101000 Russian Federation.
Dairy production facilities represent a unique ecological niche for bacteriophages of lactic acid bacteria. Throughout evolution, bacteria have developed a wide range of defense mechanisms against viral infections caused by bacteriophages. The CRISPR-Cas system is of particular interest due to its adaptive nature.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!