A food composition arranged for human consumption comprising a plurality of ingredients, all from maca root. The invention provides a process for obtaining juice and powder from maca root, wherein the seed of maca root is grinded and centrifuged to make juice and powder. Total 837 protein found in maca root. Among them, 296 are uncharacterized and 35 are putative uncharacterized new found KH good healthy proteins synthesized by KH good healthy cells.