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Oxidation of beta-c...
Oxidation of beta-carotene by bovine milk lactoperoxidase-halide-hydrogen peroxide systems
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- Ekstrand, Bo (författare)
- RISE,SIK – Svenska livmedelsinstitutet
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Bjorck, L. (författare)
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(creator_code:org_t)
- 1986
- 1986
- Engelska.
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Ingår i: Journal of Agricultural and Food Chemistry. - 0021-8561 .- 1520-5118. ; 34:3, s. 412-415
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Livsmedelsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Food Science (hsv//eng)
Nyckelord
- Food Engineering
- Livsmedelsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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