Betaine, e tsejoang hape e le letsoai la kahare la glycine trimethyl, ke motsoako oa tlhaho o se nang chefo le o se nang kotsi, alkaloid ea quaternary amine. Ke kristale e tšoeu ea prismatic kapa e kang lekhasi e nang le formula ea limolek'hule c5h12no2, boima ba limolek'hule ba 118 le ntlha ea ho qhibiliha ea 293 ℃. E latsoeha e le monate 'me ke ntho e tšoanang le livithamine. E na le ho boloka mongobo o matla 'me ho bonolo ho monya mongobo le deliquesce mochesong oa kamore. Mofuta o nang le metsi o qhibiliha metsing, methanol le ethanol, 'me o qhibiliha hanyane ka har'a ether. Betaine e na le sebopeho se matla sa lik'hemik'hale, e ka mamella mocheso o phahameng oa 200 ℃ 'me e na le khanyetso e matla ea oxidation. Lithuto li bontšitse horebetainee ka nka sebaka sa methionine ka karolo e itseng ho metabolism ea liphoofolo.

Betainee ka nkela methionine sebaka ka botlalo phepelong ea methyl. Ka lehlakoreng le leng, methionine e sebelisoa e le substrate ho etsa liprotheine, 'me ka lehlakoreng le leng, e nka karolo metabolism ea methyl e le mofani oa methyl.Betainee ka kgothaletsa tshebetso ya betaine homocysteine ​​methyltransferase sebeteng mme ya fana ka methyl e sebetsang mmoho, e le hore sehlahiswa sa methionine demethylation homocysteine ​​se ka methylated ho etsa methionine ho tloha qalong, e le hore e tswele pele ho fana ka methyl bakeng sa metabolism ya mmele ka tekanyo e fokolang ya methionine e le mojari le betaine e le mohlodi wa methyl. Ebe, boholo ba methionine bo sebedisetswa ho etsa diprotheine, tse ka bolokang methionine le ho sebedisa matla. Hammoho, betaine e senyeha hape ka mora ho methylated ho hlahisa serine le glycine, ebe e eketsa mahloriso a amino acid mading (kamoun, 1986).

Betaine e ekelitse dikahare tsa methionine, serine le glycine serum. Puchala le ba bang. E bile le ditlamorao tse tshwanang tsa teko ho dinku. Betaine e ka eketsa di-amino acid tse kang arginine, methionine, leucine le glycine serum le palo yohle ya di-amino acid serum, ebe e ama ho ntshuwa ha auxin;Betainee ka kgothaletsa phetoho ya asiti ya aspartic ho n-methylaspartic acid (NMA) ka metabolism e matla ya methyl, mme NMA e ka ama sebopeho le ho ntshwa ha auxin ka hara hypothalamus, mme ebe boemo ba auxin mmeleng.