Journal
LWT-FOOD SCIENCE AND TECHNOLOGY
Volume 153, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.lwt.2021.112477
Keywords
Wolffia arrhiza; Protein quality; Phytochemicals; Antioxidant capacity
Categories
Funding
- Innovation Academy for Seed Design, CAS
- National Aquatic Biological Resource Center (NABRC)
- National Natural Science for General Foundation of China [31770395]
- Key deployment projects of Chinese Academy of Sciences [ZDRW-ZS-2017-2-1]
- CAS Light of West China Program [2017XBZG_XBQNXZ_B_012, 2018XBZG_XBQNXZ_B_007]
- Innovation Academy for Green Manufacture, CAS [IAGM2020C19]
- Biological Resources Programme, Chinese Academy of Sciences [KFJ-BRP-008]
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Duckweeds are a high-protein plant with a good protein quality and high content of unsaturated fatty acids, making them a valuable potential food source for humans.
Duckweeds are traditionally used as a plant protein source in some Southeast Asian countries. In this study, we first obtained a high-protein strain (Wolffia arrhiza 7678a) under artificial conditions and determined its protein content in 50.89% of dry weight. More importantly, we further investigated its nutritional properties. The digestible indispensable amino acids score (DIAAS) reached 0.75, indicating the good protein quality of W. arrhiza. The proportion of unsaturated fatty acids in total fatty acids (TFA) was 70.85%, and three main fatty acids (palmitic acid, linoleic acid, alpha-linolenic acid) accounted for 89.7% of TFA. Compared with the conventional crops, it had much higher contents of total phenolics and flavonoids and showed higher antioxidant activities. Also, the low concentrations of antinutritional factors could make the nutrients of W. arrhiza easily absorbed. Therefore, W. arrhiza showed a great potential value for human food.
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