Name | propanedial |
Synonyms | propanedial 3-Oxopropanal Malonaldehyde. Malonodialdehyde 1,3-Propanedione malondialchehyche Propanedial (9CI) Malonyl dialdehyde |
CAS | 542-78-9 |
Molecular Formula | C3H4O2 |
Molar Mass | 72.06 |
Density | 0.9843 (rough estimate) |
Melting Point | 72-74° |
Boling Point | 66.43°C (rough estimate) |
pKa | 5(at 25℃) |
Refractive Index | 1.3670 (estimate) |
Toxicity | LD50 orally in rats: 632 mg/kg (Crawford) |
(IARC) carcinogen classification | 3 (Vol. 36, Sup 7, 71) 1999 |
Introduction | malondialdehyde is an important metabolic product produced by unsaturated fatty acids in oxygen free radical Aggression lipids in organisms. Malondialdehyde (MDA) has cytotoxicity, which can cause cross-linking polymerization of proteins and other living macromolecules, resulting in changes in the structure and function of cell membranes, causing serious damage to cells. |
preparation | a method for removing malondialdehyde from oils and fats, comprising the following steps: weigh 30g of edible soybean salad oil (measured by TBA colorimetric method, the content of malondialdehyde is 1.50 μg · g-1) in a ML round-bottom flask, add 30mg of concentrated phosphoric acid with 98% concentration by mass, the stirring speed was 50r/min, and the reaction was carried out at 50 ° C. For 30min; The addition of 0.3g of sodium glutamate was continued, and the stirring speed was 50r/min, and the reaction was carried out at 50 ° C. For 60min. After completion of the reaction, the soybean oil was centrifuged, and 28.3g of soybean salad oil was recovered. The content of MDA was 0.40 μg · g-1 by TBA colorimetry, and the removal rate of MDA was 73.3. |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |