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Structural and func...
Structural and functional properties of alginate obtained by means of high hydrostatic pressure-assisted extraction
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- Bojorges, Hylenne (author)
- Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.
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- Martinez-Abad, Antonio (author)
- Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.;Interdisciplinary Platform Sustainable Plast Circu, Madrid, Spain.
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- Martinez-Sanz, Marta (author)
- Inst Invest Ciencias Alimentac, CIAL CS UAM, CEI UAM CSIC, Nicolas Cabrera 9, Madrid 28049, Spain.;Interdisciplinary Platform Sustainable Plast Circu, Madrid, Spain.
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- Rodrigo, Maria Dolores (author)
- Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.
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- Vilaplana, Francisco, 1979- (author)
- KTH,Glykovetenskap,Albanova VinnExcellence Center for Protein Technology, ProNova
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- Lopez-Rubio, Amparo (author)
- Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.;Interdisciplinary Platform Sustainable Plast Circu, Madrid, Spain.
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- Fabra, Maria Jose (author)
- Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.;Interdisciplinary Platform Sustainable Plast Circu, Madrid, Spain.
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Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain Inst Agrochem & Food Technol IATA CSIC, Food Safety & Preservat Dept, Ave Agustin Escardino 7, Paterna 46980, Valencia, Spain.;Interdisciplinary Platform Sustainable Plast Circu, Madrid, Spain. (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- English.
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In: Carbohydrate Polymers. - : Elsevier BV. - 0144-8617 .- 1879-1344. ; 299
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Abstract
Subject headings
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- The effects of the high hydrostatic pressure (HPP) pre-treatment on the alginate extraction were seen to greatly depend on the recalcitrant nature of two algae species. Alginates were deeply characterized in terms of composition, structure (HPAEC-PAD, FTIR, NMR, SEC-MALS), functional and technological properties.The pre-treatment significantly increased the alginate yield in the less recalcitrant A. nodosum (AHP) also favoring the extraction of sulphated fucoidan/fucan structures and polyphenols. Although the molecular weight was significantly lower in AHP samples, neither the M/G ratio nor the M and G sequences were modified. In contrast, a lower increase in alginate extraction yield was observed for the more recalcitrant S. latissima after the HPP pre-treatment (SHP), but it significantly affected the M/G values of the resulting extract. The gelling properties of the alginate extracts were also explored by external gelation in CaCl2 solutions. The mechanical strength and nanostructure of the hydrogel beads prepared were determined using compression tests, synchro-tron small angle X-ray scattering (SAXS), and cryo-scanning electron microscopy (Cryo-SEM). Interestingly, the application of HPP significantly improved the gel strength of SHP, in agreement with the lower M/G values and the stiffer rod-like conformation obtained for these samples.
Subject headings
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Keyword
- HPP
- Molecular weight
- Nanostructure
- Brown seaweed
- M
- G ratio
- Polysaccharide extraction
Publication and Content Type
- ref (subject category)
- art (subject category)
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