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SUMMARY:Synergistic Nutrient Formulations and Thermal Drying Strategies fo
 r Enhanced Duckweed Nutrition
DTSTART;VALUE=DATE-TIME:20261001T101500Z
DTEND;VALUE=DATE-TIME:20261001T103000Z
DTSTAMP;VALUE=DATE-TIME:20260916T130456Z
UID:indico-contribution-2925@cern.ch
DESCRIPTION:Speakers: Derek Juinn Chieh Chan (Universiti Sains Malaysia)\n
 Duckweeds are gaining attention as sustainable nutrient-rich biomass due t
 o their exceptional capacity to accumulate proteins and carbohydrates. How
 ever\, maximizing biomass production alone does not guarantee the preserva
 tion of nutritional quality after harvest. This study investigated both cu
 ltivation and post-harvest processing conditions for three duckweed specie
 s (*Lemna minor*\, *Spirodela polyrhiza*\, and *Wolffia globosa*) using a 
 two-phase approach. During cultivation\, single and sequential nutrient me
 dia with different nitrogen-to-phosphorus (N:P) ratios were evaluated over
  12–28 days. Distinct species-specific responses were observed. *L. mino
 r* achieved the highest relative growth rate (0.138 day⁻¹) and protein 
 content (50.2% dry weight) under a sequential shift from a high to low N:P
  ratio (18:1 to 6:1). *S. polyrhiza* produced the highest protein concentr
 ation overall (51.7% dry weight) and performed best under prolonged cultiv
 ation at a low N:P ratio (6:1). In contrast\, *W. globosa* exhibited slowe
 r growth (0.071 day⁻¹) but accumulated the greatest lipid content (6.2%
 ) and carbohydrate content (52.4% dry weight) during extended cultivation 
 at a high N:P ratio (18:1). Drying temperature significantly affected bioc
 hemical composition. Lower temperatures (40–50°C) better preserved prot
 ein integrity\, maintaining protein yields of approximately 300–340 mg g
 ⁻¹ while minimizing lipid oxidation. Higher temperatures (50–60°C) p
 romoted degradation of non-carbohydrate components\, increasing apparent c
 arbohydrate concentrations (>400 mg g⁻¹) and enhancing anthocyanin extr
 actability from approximately 12 to over 43 mg g⁻¹.These results demons
 trate that species-specific nutrient management combined with low-temperat
 ure drying (40–50°C) is essential for preserving duckweed biomass quali
 ty and supporting large-scale\, sustainable production systems\n\nhttps://
 indico.unina.it/event/117/contributions/2925/
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/2925/
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