Winged bean (Psophocarpus tetragonolobus (L.) DC.) is adapted to tropical conditions and is grown in Southeast Asia, Papua New Guinea, various Pacific Islands, and Africa. The tender pods are the most widely consumed part of the plant, especially throughout Asia, but the leaves, stems, flowers, seeds, and tuberous roots are all nutritionally valuable and are used as food. Winged bean is another of the legumes with elevated seed oil content; varieties typically average 15% oil, with protein levels of 30-37%. The tuberous roots are a good source of energy in the form of starch, and they contain 8-10% protein.
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