Amino acid composition of leaf proteins extracted from some aquatic weeds
1993
Dewanji, A.
The chemical composition and amino acid profile of leaf protein extracted from five aquatic weeds, namely Alternanthera philoxeroides, Azolla pinnata, Lemna minor, Limnanthemum cristatum, and Pistia stratiotes, were investigated. The nitrogen content in the leaf proteins ranged from 6.1 to 8.7 beta-carotene levels varied from 462.5 to 674.7 micrograms/g, and the total polyphenols ranged from 1.3 to 2.9 There were no large differences in the amino acid composition of the five samples, suggesting that protein of a uniform composition could be extracted from aquatic plants. Levels of essential amino acids in the leaf proteins compared favorably with FAO reference pattern and chick requirements, indicating that leaf protein extracted from unwanted aquatic plants could be used for food/feed purposes. Even the fibrous byproduct, left after the extraction of aquatic leaf proteins, having 2.1-3.2% nitrogen and low nitrate contents (0.23-0.65%) could be utilized as an additional feed for ruminants.
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