HPLC/ESI-QTOF-MS/MS based untargeted metabolomics authentication of Taxus × media six tissues.

Introduction: Taxus media (Taxus × media Rehder) is renowned for its high paclitaxel content, serving as a major source for industrial paclitaxel production. In addition to paclitaxel, T. media contains a diverse range of metabolites, including flavonoids, alkaloids, and terpenoids, which have been shown to possess antioxidant, antibacterial, anti-inflammatory, and immunomodulatory effects.

Chemodiversity and Bioactivity of the Essential Oils of and Implication for Taxonomy.

The essential oils of are highly beneficial medicinally. The present study aimed to assess the chemodiversity and bioactivity of , , , , , and essential oils from the Qinghai-Tibet Plateau. The results revealed 92 components in six essential oils: α-pinene (2.

Effects of age and tissue of L. on its phytochemical characteristics, anti-cholinesterase, antidiabetes, and anti-drug resistant bacteria activities.

L. is used in the traditional Chinese medicine (TCM) system to prevent or treat various diseases. However, only the leaves and branches are used as medicinal parts.

Differences in Rhizosphere Microbiomes across Age Classes: Community Diversity and Assembly.

Evidence shows that biotic and abiotic factors have apparent diversity at different forest ages, leading to changes in rhizosphere microbiomes. However, the difference in diversity, co-occurrence pattern, and assembly of the rhizosphere microbial community among the different forest ages is still unclear. A total of 24 rhizosphere soil samples were selected from four representative age classes, using diameter at breast height (DBH) as a proxy for tree age (age class I: 5 < DBH ≤ 12.

Chemical composition, chemotypic characterization, and histochemical localization of volatile components in different cultivars of Zanthoxylum bungeanum Maxim. leaves.

Zanthoxylum bungeanum Maxim., an important spice plant, is rich in volatile components and has formed several cultivars in China. Genetic variation among different cultivars has significant effects on volatile components.

L. as a Source of Podophyllotoxins: Extraction Optimization and Anticholinesterase Activities.

L. () has been an important plant in traditional medicine since ancient times. Its needles are rich in podophyllotoxin, a precursor compound to anti-tumor drugs.

Sex-Related Differences on Chemical Composition, Anatomy, Histochemistry, and Biological Activities of Juniperus rigida.

Sex-related differences on phenolic profiles, chemical composition of essential oils, anatomy, histochemistry and biological activities (antioxidant and antibacterial activities) of Juniperus rigida needles collected from Yijun and Fugu region were first studied. In two regions, female and male had similar contents of total phenolic and total flavonoid. 10 phenolic compounds were analyzed by RP-HPLC, amentoflavone content was significantly higher in female than male in Yijun, and chlorogenic acid content was significantly higher in female than male in Fugu.

Predicting suitable distribution areas of in Qinghai Province under climate change scenarios.

is important for water and soil conservation. It is one of the native tree species suitable for afforestation and greening in high-cold and arid areas of Qinghai Province. Predicting the potential geographic distribution of in Qinghai Province under the climate change scenario will provide theoretical guidance for its management, introduction, and cultivation.

Quality evaluation of different varieties of Zanthoxylum bungeanum Maxim. peels based on phenolic profiles, bioactivity, and HPLC fingerprint.

This work aims to evaluate the quality of seven varieties of Zanthoxylum bungeanum peels based on phenolic compounds, bioactivity, and HPLC fingerprint combined with chemometrics analysis, and pick out the key chemical compounds. As a result, S2 (Fengxian Dahongpao) showed the highest content of total phenolic and rutin, as well as the strongest antioxidant activity, followed by S6 (Hancheng Shizitou). From HPLC fingerprint, eight common characteristic peaks were selected and proved to be effective in controlling the quality of Z.

Chemical composition, antibacterial activity and related mechanism of valonia and shell from Quercus variabilis Blume (Fagaceae) against Salmonella paratyphi a and Staphylococcus aureus.

Background: Plant secondary metabolites and phytochemicals that exhibit strong bioactivities have potential to be developed as safe and efficient natural antimicrobials against food contamination and addressing antimicrobial resistance caused by the overuse of chemical synthetic preservative. In this study, the chemical composition, antibacterial activities and related mechanism of the extracts of the valonia and the shell of Quercus variabilis Blume were studied to determine its potential as a safe and efficient natural antimicrobial.

Methods: The phenolic compositions of valonia and shell extracts were determined by folin-ciocalteau colourimetric method, sodium borohydride/chloranil-based assay and the aluminium chloride method and then further identified by the reverse-phase HPLC analysis.

Anatomical, Phytochemical, and Histochemical Study of Needles at Different Altitudes.

Needles of Juniperus rigida are used in Chinese traditional medicine for the treatment of brucellosis, dropsy, skin disease, and rheumatoid arthritis. This is the first study that reports anatomical structures of the J. rigida needles collected at different altitudes.

Data supporting metabolite profiles of essential oils and SSR molecular markers in Sieb. et Zucc. from different regions: A potential source of raw materials for the perfume and healthy products.

The data presented in this article afford insight into how high-quality origins were basically evaluated viewed from yields of essential oils and how GC-MS fingerprint constructed and analyzed as supplementary materials supporting the results displayed in the article of metabolite profiles of essential oils and SSR molecular markers in Sieb. et Zucc. from different regions: A potential source of raw materials for the perfume and healthy products Liu et al.

Polyphenols of Leaf, Litter and Soil of Pinus bungeana across China and Their Responses to Ecological Factors.

The importance of phenolic compounds for responding to various environmental conditions has been widely emphasized. However, the role of interactions between polyphenols and ecological factors, especially C, N, and P stoichiometry was little studied. Here, 15 sites across five provinces of Pinus bungeana in temperate regions of China were studied.

Chemical composition, antioxidant, antibacterial and cholinesterase inhibitory activities of three species.

The chemical composition, antioxidant, antibacterial and cholinesterase inhibitory activities of three species were studied. The contents of total phenolic and 10 phenolic compounds were highest in Sieb.et Zucc.

Simultaneous Enrichment and Separation of Four Flavonoids from Zanthoxylum bungeanum Leaves by Ultrasound-Assisted Extraction and Macroporous Resins with Evaluation of Antioxidant Activities.

Unlabelled: Quercitrin, hyperoside, rutin, and afzelin are the dominant flavonoids compounds from Zanthoxylum bungeanum leaves, and they play major roles in the antioxidant activity. Macroporous adsorption resin (MAR) treatment, a simple, low-cost and efficient method, was combined with ultrasound-assisted extraction (UAE) to enrich and purify these four flavonoids from Z. bungeanum leaves efficiently.

Metabolite Profiles, Bioactivity, and HPLC Fingerprint of Different Varieties of Oliv.: Towards the Utilization of Medicinal and Commercial Chinese Endemic Tree.

Oliv. is widely regarded in China as a precious medicinal and commercial endemic tree. Due to cross-breeding or natural variation of , the metabolite composition may vary significantly, making control of the medical quality difficult.

Structure elucidation and properties of different lignins isolated from acorn shell of Quercus variabilis Bl.

Chemical and structure properties of Ethanol lignin (EL), alkali lignin (AL), milled wood lignin (MWL) and cellulase enzymatic lignin (CEL) extracted from acorn shell of Quercus variabilis Bl. was studied by GPC, TG, SEM, FT-IR, C NMR, DEPT-135 NMR, 2D-HSQC and functional groups measurement. Results indicated that AL had a lower quantity of ArOH (2.

Plants as highly diverse sources of construction wood, handicrafts and fibre in the Heihe valley (Qinling Mountains, Shaanxi, China): the importance of minor forest products.

Background: Chinese rural communities living among species-rich forests have little documentation on species used to make handicrafts and construction materials originating from the surrounding vegetation. Our research aimed at recording minor wood uses in the Heihe valley in the Qinling mountains.

Methods: We carried out 37 semi-structured interviews in seven villages.

Synergistic effects and related bioactive mechanisms of Potentilla fruticosa Linn. leaves combined with green tea polyphenols studied with microbial test system (MTS).

Previous research found Potentilla fruticosa leaf extracts (PFE) combined with green tea polyphenols (GTP) showed obvious synergistic effects based on chemical mechanisms. This study further confirmed the synergy of PFE + GTP viewed from bioactivities using the microbial test system (MTS). The MTS antioxidant activity results showed the combination of PFE + GTP exhibited synergistic effect and the ratio 3:1 showed the strongest synergy, which were in accordance with the results in HO production rate.

Allelopathic Effects, Physiological Responses and Phenolic Compounds in Litter Extracts of Juniperus rigidaSieb. et Zucc.

The allelopathic effects of Juniperus rigida litter aqueous extract (LE) on wheat and Pinus tabuliformis were studied, as well as the physiological responses to the extract. High concentration LE (0.10 g Dw/ml) significantly inhibited the seed germination and seedling growth in receptor plants.

Quality Evaluation of Sieb. et Zucc. Based on Phenolic Profiles, Bioactivity, and HPLC Fingerprint Combined with Chemometrics.

() which is endemic to East Asia, has traditionally been used as an ethnomedicinal plant in China. This study was undertaken to evaluate the quality of samples derived from 11 primary regions in China. Ten phenolic compounds were simultaneously quantified using reversed-phase high-performance liquid chromatography (RP-HPLC), and chlorogenic acid, catechin, podophyllotoxin, and amentoflavone were found to be the main compounds in needles, with the highest contents detected for catechin and podophyllotoxin.

Indigenous Uses and Pharmacological Activity of Traditional Medicinal Plants in Mount Taibai, China.

This study was carried out to investigate the indigenous use and pharmacological activity of traditional medicinal plants of Mount Taibai, China. Pharmacological data were collected by conducting informal interviews with local experienced doctors practicing traditional Chinese medicine and via open-ended questionnaires on villagers. We conclude that the residents of Mt.

Synergistic effects and related bioactive mechanism of Potentilla fruticosa L. leaves combined with Ginkgo biloba extracts studied with microbial test system (MTS).

Background: Potentilla fruticosa, also called "Jinlaomei" and "Gesanghua", is widely used as folk herbs in traditional Tibetan medicine in China to treat inflammations, wounds, certain forms of cancer, diarrhoea, diabetes and other ailments. Previous research found P. fruticosa leaf extract (C-3) combined with Ginkgo biloba extracts (EGb) showed obvious synergistic effects in a variety of oxidation systems.

Chemical composition, antibacterial activity and related mechanism of the essential oil from the leaves of Juniperus rigida Sieb. et Zucc against Klebsiella pneumoniae.

Ethnopharmacological Relevance: Juniperus rigida is used as Tibetan and Mongolian medicine in China for the treatment of rheumatoid arthritis, nephritis, brucellosis and other various inflammatory diseases.

Aim Of The Study: To evaluate antibacterial potential of essential oils from J. rigida leaves against Klebsiella pneumoniae and to examine its possible related mechanisms.

Phenolic Compounds and Antioxidant Activity of Different Organs of Potentilla fruticosa L. from Two Main Production Areas of China.

This report compared the phenolic compounds and antioxidant activity of the leaves, flowers, and stems of Potentilla fruticosa L. collected from two main production areas of P. R.