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SUMMARY:Comparison of Ultrasound- and Pulsed Electric Field-Assisted Prote
 in Extraction from fresh Lemna minor: Process Evaluation and Functional Ch
 aracterization
DTSTART;VALUE=DATE-TIME:20261001T094500Z
DTEND;VALUE=DATE-TIME:20261001T100000Z
DTSTAMP;VALUE=DATE-TIME:20260916T011537Z
UID:indico-contribution-2924@cern.ch
DESCRIPTION:Speakers: Patricia Maag (Hochschule Weihenstephan-Triesdorf Un
 iversity\, TU Berlin)\nEfficient extraction methods are required to maximi
 ze protein recovery from duckweed (L. minor) while preserving nutritional 
 quality and functionality. The Institute of Food Technology at Weihensteph
 an-Triesdorf University of Applied Sciences compared ultrasound-assisted e
 xtraction (UAE) and pulsed electric field-assisted extraction (PEF) with c
 onventional alkaline–acidic extraction.\nFresh greenhouse-grown L. minor
  was processed immediately after harvest. UAE parameters were optimized\, 
 while PEF conditions were adopted from previous work. Protein concentrates
  were characterized for protein content and yield\, chlorophyll\, antioxid
 ant capacity\, and techno-functional properties.\nUAE achieved the highest
  protein extraction efficiency at 100% amplitude and 2 min sonication\, wh
 ereas the investigated PEF treatment (5 min homogenization prior to 5kV/cm
 ) comparatively enhanced cell permeabilization. UAE and PEF yielded protei
 n concentrates containing 60.81% and 65.24% protein\, with protein yields 
 of 55.02% and 34.70%\, respectively. Conventional extraction produced the 
 lowest protein yield (30.78%) but the highest protein content (66.19%)\, w
 hich did not differ significantly from PEF. Extraction technology also inf
 luenced pigment recovery\, antioxidant capacity\, and techno-functional pr
 operties. UAE achieved the highest chlorophyll extraction by ~64% and pref
 erentially recovered hydrophilic antioxidants\, consistent with previous f
 indings [1]\, whereas PEF favored hydrophobic antioxidants. The PEF-derive
 d protein concentrate showed the highest protein solubility and superior f
 oaming and emulsifying capacities\, while UAE improved foam and emulsion s
 tability.\nThese findings demonstrate that UAE and PEF are promising alter
 natives to conventional extraction\, enabling the production of duckweed p
 rotein concentrates with tailored compositional and techno-functional prop
 erties for diverse food applications.\n\nhttps://indico.unina.it/event/117
 /contributions/2924/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2924/
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