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SUMMARY:Francisco Vilaplana - KTH - Hemicelluloses: Molecular structure\, 
 assembly in plant cell walls and food  applications
DTSTART;VALUE=DATE-TIME:20210610T084000Z
DTEND;VALUE=DATE-TIME:20210610T090000Z
DTSTAMP;VALUE=DATE-TIME:20260529T230422Z
UID:indico-contribution-1111@lindico453.srv.lu.se
DESCRIPTION:Plant cell walls constitute the main renewable resource for th
 e development of bio-based energy and materials\, and they are a fundament
 al source of dietary fibre in our diets (e.g. in\ncereals\, pulses\, fruit
 s and vegetables). The heterogeneity and recalcitrance of plant cell walls
  is fundamental to the biological function\, but these pose large challeng
 es for their exploitation\nin material and nutritional applications. Plant
  cell walls constitute a fascinating biological material with controlled h
 ierarchical organization from the molecular to the macroscopic level\,\nco
 nsisting mainly of polysaccharides (cellulose\, hemicelluloses and pectins
 )\, proteins and polyphenolic compounds. Hemicelluloses act as a link betw
 een the cellulose\, protein and\nphenolic components in cell walls and reg
 ulate the aggregation of cellulose microfibrils. Hemicelluloses are a fami
 ly of complex biopolymers with a b-(1®4) backbone of neutral sugars\n(glu
 cose\, xylose and mannose)\, but decorated with an array of neutral sugar 
 and uronic acid substitutions and can be chemically-modified by acetylatio
 n. In this presentation we will cover the recent advances in understanding
  the molecular structure of hemicelluloses and their role in the organizat
 ion of plant cell walls\, with a focus on cereal cell walls. This requires
  the combination of advanced biochemical methods based on mass spectrometr
 y\, with solid-state biophysical approaches\, including small angle scatte
 ring techniques. This fundamental\ninformation on the structure and assemb
 ly of hemicelluloses can be used for the development of new sustainable pr
 ocesses for their extraction and their subsequent use in functional food\n
 ingredients with tailored properties and structures. This can be directly 
 applied to the valorization of by-products from the agricultural sector (e
 .g. cereal bran and fruit pulps)\, which\nconstitute a rich source of diet
 ary fibres with bioactive properties for their engineering in new food pro
 ducts.\n\nhttps://lindico453.srv.lu.se/event/159/contributions/1111/
LOCATION:Online on Zoom
URL:https://lindico453.srv.lu.se/event/159/contributions/1111/
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