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 (bē′tə-ēn′, -ĭn)
1. A sweet-tasting crystalline alkaloid, C5H11NO2, found in sugar beets and other plants, used to treat certain metabolic disorders, especially an enzyme defect that causes excessive levels of homocysteine in the blood and urine.
2. Any of several alkaloids with similar structures.

[Latin bēta, beet + -ine.]


(ˈbiːtəˌiːn; -ɪn; bɪˈteɪiːn; -ɪn)
1. (Elements & Compounds) a sweet-tasting alkaloid that occurs in the sugar beet and other plants and in animals. Formula: C5H11NO2
2. (Chemistry) (plural) a group of chemical compounds that resemble betaine and are slightly basic zwitterions
[C19: from New Latin Bēta beet + -ine2]


(ˈbi təˌin, -ɪn; bɪˈteɪ in, -ɪn)

a colorless crystalline alkaloid, C5H11NO2, usu. obtained from sugar beets or synthesized from glycine and used in medicine.
[1875–80; < Latin bēta beet + -ine 2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.betaine - a sweet tasting alkaloid that occurs in sugar beetsbetaine - a sweet tasting alkaloid that occurs in sugar beets
alkaloid - natural bases containing nitrogen found in plants
References in periodicals archive ?
Free amino acids and glycine betaine in leaf osmoregulation of spinach responding to increasing salt stress.
In the treatments in which silicon and biofertilizer were applied, there was also an increase in Glycine betaine levels, resulting in a significant effect on both factors (Figure 5E and F).
Rudy, "Effect of NaCl-induced osmotic stress on intracellular concentrations of glycine betaine and potasxsium in Escherichia coli, Enterococcus faecalis, and staphylococci," The Journal of Laboratory and Clinical Medicine, vol.
Influence of exogenous application of proline and glycine betaine on growth of salt-stressed tomato plants.
Glycine betaine (GB) is found in the chloroplast and plays an important role in osmotic adjustment, protection of thylakoid membrane, protecting chloroplast and photosynthesis system II (PSII) under stress conditions (Ashraf and Harris 2004).
Exogenous application of proline alleviates salt induced oxidative stress more efficiently than glycine betaine in sugarcane cultured cells.
Examples of plant metabolites that are involved in salinity tolerance include polyols such as mannitol and sorbitol, dimethylsulfonium compounds, glycine betaine, sugars such as sucrose, trehalose and fructans, or amino acids such as proline that serve as an osmolyte or osmoprotectant [231].
Assessment of glycine betaine and proline compartmentation by analysis isolated beet vacuoles.
Escherichia coli 1130B-2ATCC was grown on nutrient agar medium (Difco Labs, Detroit, MI, USA), medium + 0.8 M NaCl and medium + 0.8 M NaCl + 0.001 M betaine (glycine betaine) (Sigma Chemical Company, St.
R., 1984, "Osmotic adjustment of cyanobacteria: the effect of NaCl, KCl, sucrose and glycine betaine on glutamine synthatase activity in a marine and a halotolerant strain," J.