Betaine, nke a makwaara dị ka nnu dị n'ime glycine trimethyl, bụ ihe mejupụtara eke na-adịghị egbu egbu ma na-emerụ ahụ, quaternary amine alkaloid. Ọ bụ kristal ọcha dị ka prismatic ma ọ bụ akwụkwọ nwere usoro molekul c5h12no2, ibu molekul nke 118 na ebe ịgbaze nke 293 ℃. Ọ na-atọ ụtọ ma bụrụ ihe yiri vitamin. Ọ nwere njigide mmiri siri ike ma dị mfe ịmịkọrọ mmiri na deliquesce na okpomọkụ ụlọ. Ụdị mmiri mmiri a na-agbaze na mmiri, methanol na ethanol, ọ na-agbazekwa ntakịrị na ether. Betaine nwere nhazi kemịkalụ siri ike, nwere ike iguzogide okpomọkụ dị elu nke 200 ℃ ma nwee ike iguzogide oxidation siri ike. Ọmụmụ ihe egosila nabetainenwere ike dochie methionine n'ime metabolism anụmanụ.

Betainenwere ike dochie methionine kpamkpam na inye methyl. N'otu aka, a na-eji methionine eme ihe dị ka ihe ndabere iji mepụta protein, n'aka nke ọzọ, ọ na-esonye na metabolism methyl dị ka onye na-enye methyl.Betainenwere ike ịkwalite ọrụ nke betaine homocysteine ​​methyltransferase n'ime imeju ma nye methyl na-arụ ọrụ ọnụ, ka e wee nwee ike ịmepụta methylation methionine demethylation ngwaahịa homocysteine ​​iji mepụta methionine site na ọkọ, ka o wee na-enye methyl mgbe niile maka metabolism ahụ yana oke methionine dị ka onye na-ebu ya na betaine dị ka isi iyi methyl, Mgbe ahụ, a na-eji ọtụtụ methionine emepụta protein, nke nwere ike ịchekwa methionine ma jiri ike. N'otu aka ahụ, betaine na-emebiwanye mgbe emechara methylation iji mepụta serine na glycine, wee mee ka amino acid dị n'ọbara dịkwuo elu (kamoun, 1986).

Betaine mụbara ihe dị n'ime methionine, serine na glycine n'ime serum. Puchala na ndị otu ya nwekwara mmetụta nnwale yiri nke ahụ n'ahụ atụrụ. Betaine nwere ike itinye amino acid dịka arginine, methionine, leucine na glycine n'ime serum yana mkpokọta amino acid dị na serum, wee metụta mwepụta nke auxin;Betainenwere ike ịkwalite ntụgharị nke aspartic acid ka ọ bụrụ n-methylaspartic acid (NMA) site na metabolism methyl siri ike, NMA nwekwara ike imetụta nhazi na mwepụ nke auxin na hypothalamus, wee metụta ọkwa nke auxin n'ahụ.