What vegetables are incomplete proteins and what you need to know
                                
                                
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                                    5 min read                                
                            
                                Over 80% of plant proteins found in sweet potatoes come from unique proteins called sporamins. All vegetables, along with most other plant-based foods, contain incomplete proteins, meaning they lack or are low in one or more of the nine essential amino acids. This doesn't mean they are nutritionally inferior, but rather requires a varied diet to obtain a complete amino acid profile throughout the day.