AUTHOR=Wang Xin , Li Bin , Liu Dongyan , Guo Yuer , Zhang Jiaxu , Li Wanyu , Peng Tengteng , Ma Quhuan , Shi Xiaofeng 

TITLE=Isolation, characterization, and LC MS/MS determination of anti-obesity components from pine needles of Cedrus deodara (Roxb.) G. Don

JOURNAL=Frontiers in Nutrition

VOLUME=11

YEAR=2024

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1448908

DOI=10.3389/fnut.2024.1448908

ISSN=2296-861X

ABSTRACT=<sec id="sec1"><title>Objective</title><p>This study aimed to isolate and analyze the components in cedar pine needles (needle leaves of <italic>Cedrus deodara</italic> (Roxb.) G. Don) that exhibit anti-obesity effects, as determined through animal experiments.</p></sec><sec id="sec2"><title>Methods</title><p>The extract of cedar pine needles was separated into four fractions of different polarities using a macroporous resin column. The fraction that retained anti-obesity activity was evaluated based on the results of animal experiments. Monomeric compounds were structurally characterized and isolated from the active fraction using a preparative liquid chromatography system. Combined with subsequent glucose gel chromatographic separation. The content of the separated components was determined using ultrahigh performance liquid chromatography coupled with triple quadrupole mass spectrometry (UPLC-QQQ-MS/MS).</p></sec><sec id="sec3"><title>Results</title><p>The water-washed fraction retained anti-obesity activity of the cedar pine needles more effectively. A total of 16 compounds were separated from this fraction, and the contents of 14 of these compounds were determined to be present in cedar pine needles.</p></sec><sec sec-type="conclusions" id="sec4"><title>Conclusion</title><p>Nine components, namely p-hydroxy benzyl alcohol, chlorogenic acid, vanillic acid, syringic acid, P-coumaric acid, sinapic acid, benzoic acid, phenylacetic acid, salicylic acid, were characterized and determined for the first time in cedar pine needles. The components with anti-obesity activity in the pine needles of <italic>Cedrus</italic> are mainly derived from phenolic acids.</p></sec>