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Chemistry and Biodiversity 2020-May

Lipophilic Metabolites from Five-needle Pines, Pinus armandii and Pinus kwangtungensis, Exhibiting Antibacterial Activity.

Rakstu tulkošanu var veikt tikai reģistrēti lietotāji
Ielogoties Reģistrēties
Saite tiek saglabāta starpliktuvē
Alexander Shpatov
Tatyana Frolova
Sergey Popov
Olga Sinitsyna
Olga Salnikova
Guang-Yao Zheng
Linlin Yan
Nadezhda Sinelnikova
Lyudmila Pshennikova
Alexey Kochetov

Atslēgvārdi

Abstrakts

Lipophilic extractive metabolites from needles and defoliated twigs of Pinus armandii and P. kwangtungensis were studied by GC-MS. Needles of P. armandii contained predominantly 15- O -functionalized labdane type acids (anticopalic acid), fatty acids, nonacosan-10-ol, sterols, nonacosan-10-ol and sterol saponifiable esters, and acylglycerols. While P. kwangtungensis needles comprised no anticopalic acid, but more trinorlabdane (14,15,16-trinor-8(17)-labdene-13,19-dioic acid) and other labdane type acids, nonacosan-10-ol and its saponifiable esters. The major compounds in the P. armandii defoliated twig extract were abietane and isopimarane type acids, fatty acids, sterols, labdanoids ( cis- abienol), cembranoids (isocembrol and 4- epi -isocembrol), saponifiable sterol esters, and acylglycerols. The same extract of P. kwangtungensis contained larger quantities of fatty acids, caryophyllene oxide, serratanoids, sterols, saponifiable sterol esters, and acylglycerols; but lesser amounts of abietane and isopimarane type acids, cis- abienol, and lacked cembranoids. Both twig and needle extracts of P. armandii and P. kwangtungensis , as well as the extracts' fractions, significantly inhibited the growth of Gram-negative bacteria Serratia marcescens with MIC of 0.1 mg ml -1 . While in most cases they slightly stimulated the growth of Gram-positive bacteria Bacillus subtilis at the same concentrations. Thus, lipophilic extractive compounds from needles and defoliated twigs of both pines are prospective for the development of antiseptics against Gram-negative bacteria.

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