Cob(I)alamin Reacts with Sucralose to Afford an Alkylcobalamin [Elektronisk resurs] Relevance to In Vivo Cobalamin and Sucralose Interaction
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Motwani V, Hitesh (författare)
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Qiu, Shiran (författare)
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Golding, Bernard T (författare)
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Kylin, Henrik (författare)
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Törnqvist, Margareta (författare)
- Springer 2011
- Engelska.
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Ingår i: Food and Chemical Toxicology. - 0278-6915. ; 49:4, 750-757
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- Vitamin B 12 , viz., cyano- or hydroxo-cobalamin, can be chemically or enzymatically converted into the derivatives methyl- and adenosyl-cobalamin, which are complex organometallic cofactors associated with several cobalamin-dependent enzymes. The reduced form of vitamin B 12 , cob(I)alamin {Cbl(I)}, obtained by reduction of hydroxocobalamin (OH-Cbl) with e.g. sodium borohydride, is one of the most powerful nucleophiles known. Cbl(I) was shown to react readily with the synthetic sweetener sucralose (1,6-dichloro-1,6-dideoxy-β-d-fructofuranosyl-4-chloro-4-deoxy-α-d-galactopyranoside) in an aqueous system to form an alkylcobalamin (Suc-Cbl). This occurred by replacement of one of the three chlorine atoms of sucralose with a cobalamin moiety. The efficiency of trapping sucralose in presence of excess Cbl(I) was estimated to be >90%. Furthermore, in an in vitro study using human liver S9 with NADPH regeneration, in presence of OH-Cbl and sucralose, Suc-Cbl was shown to be formed. The Suc-Cbl was characterized primarily by LC-ESI + -MS/MS. Given the human consumption of sucralose from food and beverages, such a reaction between the sweetener and reduced vitamin B 12 could occur in vivo .
Ämnesord
- Natural Sciences (hsv)
- Earth and Related Environmental Sciences (hsv)
- Environmental Sciences (hsv)
- Naturvetenskap (hsv)
- Geovetenskap och miljövetenskap (hsv)
- Miljövetenskap (hsv)
- Chemical Sciences (hsv)
- Analytical Chemistry (hsv)
- Kemi (hsv)
- Analytisk kemi (hsv)
- Medical and Health Sciences (hsv)
- Health Sciences (hsv)
- Environmental Health and Occupational Health (hsv)
- Medicin och hälsovetenskap (hsv)
- Hälsovetenskaper (hsv)
- Miljömedicin och yrkesmedicin (hsv)
- Basic Medicine (hsv)
- Pharmacology and Toxicology (hsv)
- Medicinska grundvetenskaper (hsv)
- Farmakologi och toxikologi (hsv)
- NATURAL SCIENCES (svep)
- NATURVETENSKAP (svep)
Indexterm och SAB-rubrik
- Hydroxocobalamin
- sucralose
- sodium borohydride
- NADPH
- alkylcobalamin
- LC-MS/MS
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