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At CD Bioglyco, we provide one-stop services such as the Production, Characterization, and Bioactivity Analysis of marine carbohydrates to unlock the development and application of marine carbohydrates. Carrageenan is a sulfated polysaccharide extracted from red algae. Its excellent gelling, thickening, and stabilizing properties make it widely used in industry. We provide clients with carrageenan extraction, purification, characterization, and bioactivity analysis services.
We use advanced technologies to extract natural carrageenan polysaccharides from various red algae. Commonly used technologies include ultrasound-assisted extraction, microwave-assisted extraction, and supercritical fluid extraction. Ultrasonic-assisted extraction uses ultrasound to improve extraction efficiency and reduce processing time. Microwave-assisted extraction uses microwaves to accelerate the healing process in extraction, thereby increasing yield and reducing energy use. Supercritical fluid extraction uses supercritical CO2 to extract carrageenan more efficiently and sustainably.
We precipitate carrageenan from solution using isopropyl alcohol or by adding salts, such as potassium salts or ethanol for kappa (κ) carrageenan, calcium salts for iota carrageenan (ι), and ethanol for lambda carrageenan (λ). The precipitated carrageenan is then separated by centrifugation and washed several times with alcohol or water to remove residual salts and impurities. The purified carrageenan is dried to obtain a powder form, and the drying conditions are carefully controlled to maintain its functional properties. We also further purify the carrageenan by repeated filtration, ion exchange, and dialysis to obtain a highly pure product.
Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) are used to analyze the functional groups and molecular structure of carrageenan. High-performance liquid chromatography (HPLC) is used to measure the purity and molecular weight distribution of carrageenan. Rheology is used to evaluate the gel strength, viscosity, and other mechanical properties of carrageenan. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) are used to evaluate the thermal properties of carrageenan, such as melting temperature and thermal stability. We also perform elemental analysis on samples.
Bioactivity analysis of carrageenan is essential to understand its potential health benefits, therapeutic properties, and stability under different conditions. We offer carrageenan anticoagulant activity analysis, anti-inflammatory property analysis, antiviral activity assays, antimicrobial assays, and antitumor activity analysis.
Technology: FTIR,1H NMR,31P NMR,Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX)
Journal: Plos one
IF: 2.9
Published: 2017
Results: The authors modified and characterized the polymer electrolyte membrane of the natural polymer κ-carrageenan. First, O-methylene phosphonic κ-carrageenan (OMPC) was successfully synthesized by phosphorylation of κ-carrageenan using formaldehyde and phosphorous acid. The chemical structure of OMPC was then characterized by FTIR, 1H NMR, 31P NMR, and SEM-EDX. The authors also measured the impedance spectra of κ-carrageenan and OMPC in dry and hydrated states to study the conductive properties of the membrane. The results show that the ionic conductivity of OMPC is higher than that of κ-carrageenan, and the ionic conductivity of the hydrated membrane is two orders of magnitude higher than that of the dry membrane.
Fig.1 1H NMR spectra of (a) κ-carrageenan and (b) OMPC. (Liew, et al., 2017)
Can the characterization service identify the type of carrageenan?
Yes, we accurately identify and differentiate the different types: κ-carrageenan, ι-carrageenan and λ-carrageenan. For example, using FTIR to identify the specific functional bonds inherent in each type of carrageenan, using NMR to achieve precise identification of the carrageenan type, and using HPLC to separate and identify different types of carrageenan based on their retention time.
What industries are carrageenan characterization services suitable for?
Carrageenan's gelling, thickening, and stabilizing properties make it very versatile, so our characterization services apply to any industry containing carrageenan, including food and beverage, pharmaceuticals, cosmetics, agriculture, and biotechnology.
At CD BioGlyco, we use a range of advanced analytical techniques to determine the molecular structure, composition, and functional properties of different types of carrageenan. Please feel free to
for more information on carrageenan analysis.Reference