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Author Taboada, E.; Fisher, P.; Jara, R.; Zuniga, E.; Gidekel, M.; Cabrera, J.C.; Pereira, E.; Gutierrez-Moraga, A.; Villalonga, R.; Cabrera, G. pdf  doi
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  Title Isolation and characterisation of pectic substances from murta (Ugni molinae Turcz) fruits Type
  Year 2010 Publication Food Chemistry Abbreviated Journal Food Chem.  
  Volume (up) 123 Issue 3 Pages 669-678  
  Keywords Pectin; Murta; Ugni molinae; Polysaccharide extraction; Pectin characterisation  
  Abstract Cell walls polysaccharides from murta fruit (Ugni molinae Turcz), an endemic Chilean species with relevant food uses, were fractionated by water, ammonium oxalate, hot diluted HCl and cold diluted NaOH extractions. The polysaccharide fractions were analysed for monosaccharide composition and physicochemical properties. Pectic substances were found in all extracts, but mainly in the oxalate and acid soluble fractions, in which they appear as homogalacturonan polymers. Murta pectin was further extracted by hot diluted acid treatment using industrial conditions, yielding 30% by weight of dry fruit. The polymer showed similar composition and physicochemical properties to those of commercial citrus pectin, presenting a galacturonic acid content of 70.9% (w/w), a molecular weight of 597 kDa, and a methoxylation degree of 57%. The FT-IR spectrum of murta pectin suggests the presence of ferulic acid residues on its structure and the NMR analysis confirmed the structure of this polysaccharide. It is concluded that murta fruit can be considered as a valuable source of high quality pectin. (C) 2010 Elsevier Ltd. All rights reserved.  
  Address [Gidekel, Manuel; Cabrera, Gustavo] Univ Adolfo Ibanez, VentureLab, Escuela Negocios, Santiago, Chile, Email: gustavo.cabrera@uai.cl  
  Corporate Author Thesis  
  Publisher Elsevier Sci Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0308-8146 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000280917800016 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 80  
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