Betaine, wanda aka fi sani da glycine trimethyl gishirin ciki, wani sinadari ne na halitta wanda ba shi da guba kuma mara lahani, quaternary amine alkaloid. Fari ne mai kama da lu'ulu'u mai kama da ganye tare da dabarar kwayoyin halitta c5h12no2, nauyin kwayoyin halitta na 118 da kuma wurin narkewa na 293 ℃. Yana da daɗi kuma abu ne mai kama da bitamin. Yana da ƙarfi riƙe danshi kuma yana da sauƙin sha danshi da ɗanɗano a zafin ɗaki. Nau'in da aka sha ruwa yana narkewa a cikin ruwa, methanol da ethanol, kuma yana narkewa kaɗan a cikin ether. Betaine yana da ƙarfi a cikin tsarin sinadarai, yana iya jure zafin jiki mai yawa na 200 ℃ kuma yana da ƙarfi a cikin juriyar iskar shaka. Nazarin ya nuna cewabetainezai iya maye gurbin methionine a cikin metabolism na dabbobi.

Betainezai iya maye gurbin methionine gaba ɗaya wajen samar da methyl. A gefe guda, ana amfani da methionine a matsayin substrate don samar da sunadarai, kuma a gefe guda, yana shiga cikin metabolism na methyl a matsayin mai ba da gudummawar methyl.Betainezai iya haɓaka aikin betaine homocysteine ​​methyltransferase a cikin hanta da kuma samar da methyl mai aiki tare, ta yadda samfurin methionine demethylation homocysteine ​​​​za a iya methylated don samar da methionine daga tushe, don ci gaba da samar da methyl don metabolism na jiki tare da iyakataccen adadin methionine a matsayin mai ɗaukar kaya da betaine a matsayin tushen methyl, Sannan, yawancin methionine ana amfani da shi don samar da sunadarai, wanda zai iya adana methionine da amfani da ƙarfi. Tare, betaine yana ƙara lalacewa bayan an methylated don samar da serine da glycine, sannan kuma ƙara yawan amino acid a cikin jini (kamoun, 1986).

Betaine ya ƙara yawan sinadarin methionine, serine da glycine a cikin jini. Puchala da sauransu sun sami irin wannan tasirin gwaji ga tumaki. Betaine na iya ƙara amino acid kamar arginine, methionine, leucine da glycine a cikin jini da kuma jimlar adadin amino acid a cikin jini, sannan ya shafi fitar da auxin;Betainena iya haɓaka canza aspartic acid zuwa n-methylaspartic acid (NMA) ta hanyar metabolism mai ƙarfi na methyl, kuma NMA na iya shafar abun da ke ciki da fitar da auxin a cikin hypothalamus, sannan matakin auxin a cikin jiki.