Chemical composition and antibacterial activities of lupin seeds extracts.
Determination of influence of lupin natural phenolic compounds on antibacterial properties of its seeds was carried out. Raw material were seeds of Lupinus albus, L. luteus, and L. angustifolius. The methods included the determination of the content of proteins, total phenolic compounds, free phenolic acids, and tannins as well as antibacterial properties with ethanol extracts. The content of total phenolic compounds was smaller in testas than in cotyledons and the highest levels are observed in bitter cultivars of Lupinus albus cv. Bac and L. angustifolius cv. Mirela. Lupin tannins mainly occurred in cotyledons of the white lupin, predominantly in the bitter cultivar Bac. Free phenolic acids were mainly found in testas. Only extracts from the testas displayed antibacterial properties, which excludes the possibility of alkaloid influence on the results. The results suggest that inhibition of test bacteria growth depended mainly upon the content of the total phenolic compounds.
Lampart-Szczapa
Eleonora
E
August Cieszkowski Agricultural University, Faculty of Food Technology, Department of Food Biochemistry and Analysis, Mazowiecka 48, PL-60-623 Poznan, Poland. elasz291@owl.au.poznan.pl
Siger
Aleksander
A
Trojanowska
Krystyna
K
Nogala-Kalucka
Małgorzata
M
Malecka
Maria
M
Pacholek
Bogdan
B
D000900:Anti-Bacterial Agents / Q000032:analysis / Q000494:pharmacology*; D001412:Bacillus subtilis / Q000187:drug effects* / Q000254:growth & development; D002851:Chromatography, High Pressure Liquid; D004926:Escherichia coli / Q000187:drug effects* / Q000254:growth & development; D031297:Lupinus / Q000737:chemistry*; D010636:Phenols / Q000032:analysis / Q000494:pharmacology*; D010936:Plant Extracts / Q000032:analysis; D010940:Plant Proteins / Q000032:analysis / Q000494:pharmacology; D012639:Seeds / Q000737:chemistry*; D013634:Tannins / Q000032:analysis
D000900:Anti-Bacterial Agents; D010636:Phenols; D010936:Plant Extracts; D010940:Plant Proteins; D013634:Tannins