منابع مشابه
Degradation of Β-carotene under Uv-rich Irradiation Conditions: Implications for Martian Environment
Introduction: If life ever evolved on Mars, it could leave molecular remnants – biomarkers which can be preserved within the Martian geological environment. It has been demonstrated that the survival of extremophiles in stressed terrestrial environments fundamentally depends upon their synthesis of a specialized suite of protective biochemicals in response to desiccation, low-wavelength high-en...
متن کاملAnalytical tools for the analysis of β-carotene and its degradation products
β-Carotene, the precursor of vitamin A, possesses pronounced radical scavenging properties. This has centered the attention on β-carotene dietary supplementation in healthcare as well as in the therapy of degenerative disorders and several cancer types. However, two intervention trials with β-carotene have revealed adverse effects on two proband groups, that is, cigarette smokers and asbestos-e...
متن کاملContent of β-carotene in organic milk
Milk produced at organic farms was studied to determine the β-carotene content and if an extended grazing period and organic fodder had any influence on the concentration of this antioxidant. Milk samples from 31 organic farms collected during April, June, August, November (1999) and February (2000) were analysed for the content of β-carotene by HPLC after lipid extraction and fat saponificatio...
متن کاملβ,β-carotene 15,15'-monooxygenase and its substrate β-carotene modulate migration and invasion in colorectal carcinoma cells.
BACKGROUND β,β-Carotene 15,15'-monooxygenase (BCMO1) converts β-carotene to retinaldehyde. Increased β-carotene consumption is linked to antitumor effects. Retinoic acid reduces the invasiveness in cancer, through inhibition of matrix metalloproteinases (MMPs). In our studies of a mouse model that develops intestinal tumors after low dietary folate, we found reduced BCMO1 expression in normal p...
متن کاملCorrection: Development of β-Carotene Rich Maize Hybrids through Marker-Assisted Introgression of β-carotene hydroxylase Allele
Development of vitamin A-rich cereals can help in alleviating the widespread problem of vitamin A deficiency. We report here significant enhancement of kernel β-carotene in elite maize genotypes through accelerated marker-assisted backcross breeding. A favourable allele (543 bp) of the β-carotene hydroxylase (crtRB1) gene was introgressed in the seven elite inbred parents, which were low (1.4 µ...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1993
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj2920310