Entrapment of ethyl vanillin in calcium alginate and calcium alginate/poly(vinyl alcohol) beads
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Steva Levic
,
Verica Djordjevic
Abstract
Electrostatic extrusion was applied to the encapsulation of 3-ethoxy-4-hydroxybenzaldehyde (ethyl vanillin) in calcium alginate and calcium alginate/poly(vinyl alcohol) beads. The calcium alginate/poly(vinyl alcohol) hydrogel spheres were formed after contact with the cross-linker solution of calcium chloride, followed by the freeze-thaw method for poly(vinyl alcohol) gel formation. The entrapment of aroma in beads was investigated by FTIR and thermal analysis (thermogravimetry/differential thermal gravimetry; TGA/DTG). The mass loss in the temperature range of 150–300°C is related to degradation of the matrix and the release of ethyl vanillin. According to the DTG curve, the release of ethyl vanillin occurs at about 260°C. TGA measurements of the stored samples confirmed that formulations were stable for a period of one month. FTIR analysis provides no evidence for chemical interactions between flavour and alginate that would alter the nature of the functional groups in the flavour compound.
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© 2012 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Characterisation of VOC composition of Slovak monofloral honeys by GC×GC-TOF-MS
- Combustion-derived CdO nanopowder as a heterogeneous basic catalyst for efficient synthesis of sulfonamides from aromatic amines using p-toluenesulfonyl chloride
- Molybdate sulfonic acid: preparation, characterization, and application as an effective and reusable catalyst for octahydroxanthene-1,8-dione synthesis
- Enantioselective extraction of hydrophilic 2-chloromandelic acid enantiomers by hydroxypropyl-β-cyclodextrin: experiments and modeling
- Attrition of dolomitic lime in a fluidized-bed reactor at high temperatures
- Improvement of aquatic pollutant partition coefficient correlations using 1D molecular descriptors — chlorobenzene case study
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- Thermal decomposition of lanthanide(III) complexes of bis-(salicylaldehyde)-1,3-propylenediimine Schiff base ligand
- Effect of hyamine on electrochemical behaviour of brass alloy in HNO3 solution
- Calorimetric determination of the effect of additives on cement hydration process
- Entrapment of ethyl vanillin in calcium alginate and calcium alginate/poly(vinyl alcohol) beads
- Facile synthesis of 3-substituted quinazoline-2,4-dione and 2,3-di-substituted quinazolinone derivatives
- Virtual screening of imidazole analogs as potential hepatitis C virus NS5B polymerase inhibitors
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