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Oxidation of beta-c...
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Ekstrand, BoRISE,SIK – Svenska livmedelsinstitutet
(författare)
Oxidation of beta-carotene by bovine milk lactoperoxidase-halide-hydrogen peroxide systems
- Artikel/kapitelEngelska1986
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LIBRIS-ID:oai:DiVA.org:ri-8811
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https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-8811URI
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Språk:engelska
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Sammanfattning på:engelska
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The halide-mediated peroxidase-catalyzed oxidation of ?-carotene was studied as a model system for lipid peroxidation. Of the halide ions tested, Br-, I-, and SCN- all caused some degree of ?-carotene oxidation at pH 7.0 and 4.4. No oxidation was observed with Cl-, however, which is consistent with Cl- not being a substrate for lactoperoxidase. The ?-carotene oxidation caused by the lactoperoxidase-I--H2O2 system was pH dependent, the rate of oxidation being 100-fold higher at pH 4.4 than at pH 7.0. When both I- and SCN- were present, the oxidation rate was reduced. At least partially, this interference between the two substrates was due to competition for the substrate-binding sites on the enzyme. © 1986 American Chemical Society.
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Bjorck, L.
(författare)
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RISESIK – Svenska livmedelsinstitutet
(creator_code:org_t)
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Ingår i:Journal of Agricultural and Food Chemistry34:3, s. 412-4150021-85611520-5118
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