Utilization of tomato peel waste from canning factory as a potential source for pectin production and application as tin corrosion inhibitor
| Autor: | Zorana Grabarić, Antonela Ninčević Grassino, Suzana Rimac Brnčić, Senka Djaković, Jasna Halambek, Maja Dent |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Tomato peel
Pectin isolation and composition Rheology FTIR and NMR spectroscopy Corrosion inhibitor Cyclical economy Chromatography food.ingredient Pectin General Chemical Engineering Extraction (chemistry) Oxalic acid 04 agricultural and veterinary sciences 02 engineering and technology General Chemistry Food chemistry Ammonium oxalate 021001 nanoscience & nanotechnology 040401 food science Corrosion chemistry.chemical_compound 0404 agricultural biotechnology food chemistry Food science 0210 nano-technology Food Science Waste disposal |
| Popis: | Background The possibility of utilizing the bioorganic tomato peel as a cheap source for pectin production and its application as a corrosion inhibitor was investigated to implement viable cyclical economy principle in solving the main problem of waste disposal. Methodology Pectin, from two batches (A and B) from canning factory, was extracted in two steps with ammonium oxalate/oxalic acid, under reflux. Physico-chemical properties, characterisation of structure (FTIR and NMR spectroscopy) and application as corrosion inhibitor of pure tin for isolated pectin were investigated. Results The highest pectin yield of 32.6 and 31.9% in two batches, respectively, but the lowest pectin quality, i.e. methoxy and anhydrouronic acid contents and degree of esterification, were obtained in the second extraction step, which points out that higher pectin yields are not necessarily connected with higher pectin quality. The results of total anhydrouronic acid content for batches A (52.9%) and B (39.6%) show that sample origin have a considerable effect on pectin quality. Degree of esterification around 82% categorizes extracted pectin as high methoxy pectin. Corrosion results point out that pectin is efficient inhibitor (73%) even at very low concentrations, much better then commercially available pectin. Conclusion According to chemical profile, rheological properties and structural characterisation of extracted pectins, it can be concluded that tomato peel is a suitable source for pectin isolation. The obtained results show that under-utilised biomass waste from tomato canning industry can be used for development of new generation of corrosion inhibitors and as valuable additive in food industry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|