Betaine (BEET-uh-een, bē'tə-ēn', -ĭn) ee kimistarigu waa kiimiko dhexdhexaad ah oo leh koox si togan loo dallaco sida ammonium quaternary ama fosfoonium cation (guud ahaan: ions onium) oo aan lahayn wax atom hydrogen iyo koox si taban loo dallaco sida kooxda karboksylate oo laga yaabo in aanay u dhowayn goobta cationic. Betaine sidaas darteed waxay noqon kartaa nooc gaar ah oo zwitterion ah. Taariikh ahaan ereyga waxaa loo qoondeeyay trimethylglycine kaliya. Waxaa sidoo kale loo isticmaalaa dawo ahaan. Nidaamyada bayoolojiga, betaines badan oo dabiici ah ayaa u adeega sida osmolytes organic, walxaha la sameeyay ama laga soo qaaday deegaanka ee unugyada si looga ilaaliyo diiqada osmotic, abaarta, cusbada sare ama heerkulka sare. Isku-ururinta unugyada intracellular ee betaines, aan waxyeello u geysan shaqada enzyme, qaab-dhismeedka borotiinka iyo daacadnimada xuubka, waxay oggolaataa in biyaha lagu hayo unugyada, sidaas awgeedna ka ilaalinta saamaynta fuuqbaxa. Sidoo kale waa ku-deeqaha methyl ee muhiimadda sii kordheysa ee la aqoonsan yahay ee biology.Betaine waa alkaloid leh hygroscopicity xooggan, sidaas darteed waxaa inta badan lagu daaweeyaa wakiilka anti-caking ee habka wax soo saarka. Qaab dhismeedkeeda molecular iyo saamaynta codsigu aad ugama duwana tan betaine-ka dabiiciga ah, waxayna ka tirsan tahay walaxda dabiiciga ah ee u dhiganta isku-darka kiimikada. Beddel methionine si aad u wanaajiso wax soo saarka una yarayso qiimaha quudinta.
