Optimum aquaculture and drying conditions for Wolffia arrhiza (L.) Wimn

Prosridee, Kakanang; Oonsivilai, Ratchadaporn; Tira-aumphon, Arak; Singthong, Jittra; Oonmetta-aree, Jirawan; Oonsivilai, Anant

doi:10.1016/j.heliyon.2023.e19730

Cited by 1 publication

(1 citation statement)

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“…The FDA has filed it as GRAS or Generally Recognized as Safe (EFSA, 2021). Wolffia is the most prevalent genus of duckweed found in Asia, with W. arrhiza and W. globosa being the two most abundant species found in Thailand (Ruekaewma et al, 2015;Appenroth et al, 2018;Prosridee et al, 2023). The plant has a rapid growth rate, reproduces asexually, has a short life cycle, and requires only a small cultivation area, making it an emerging food protein source (Yang et al, 2020;Nieuwland et al, 2021;Anoop et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Effects of alkaline and ultrasonication on duckweed (Wolffia arrhiza) protein extracts’ physicochemical and techno-functional properties

Nitiwuttithorn,

Wongsasulak,

Vongsawasdi

et al. 2024

Front. Sustain. Food Syst.

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Wolffia is a protein-rich aquatic plant with the potential to help address food sustainability issues; however, a more efficient extraction process must be sought due to limited yield with conventional methods. This study aimed to investigate the effects of duckweed forms (fresh and dried), duckweed-to-aqueous solution ratio (DSR), as well as alkaline and ultrasonication extractions on yields, physicochemical and techno-functional properties of duckweed protein extracts (DPE). Three extraction methods were used: alkaline extraction (AE), ultrasound-assisted alkaline extraction (UAAE), and ultrasound-assisted water extraction (UAWE). The study showed fresh duckweed resulted in a 2.5-fold higher yield and protein recovery than oven-dried duckweed. UAE significantly enhanced extraction yield and protein recovery. The optimal extraction process was a DSR of 1:6 using UAAE at pH 8.5, resulting in a 16% yield and 34% protein recovery. Furthermore, the study found that UAE facilitated the extraction of non-polar/hydrophobic amino acids while AE proved to be efficient in extracting sulfur-containing amino acids. This study, for the first time, revealed the role of UAE and AE in promoting the extraction of different profiles of amino acids. The DPE produced using UAAE contained 65% protein, meeting the WHO/FAO/UNU recommended protein intake for preschool-aged children. Furthermore, the DPE exhibited excellent emulsifying properties and oil-holding capacity comparable to commercial soy protein isolates. Overall, UAAE was identified as a promising approach for producing techno-functional and nutritious protein ingredients from Wolffia. The resulting DPE proved to show great potential for functional plant-based food and feed applications.

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