Response Surface Optimized Extraction of Total Triterpene Acids from &lt;i&gt;Eriobotrya japonica&lt;/i&gt; (Thunb) &lt;i&gt;Lindl&lt;/i&gt; (Loquat) Leaf and Evaluation of their In vitro Antioxidant Activities

Ke, Zhongcheng; Zhu, Zhi-Ping; Xu, Zhengguo; Fang, Chao; Hu, Shangqing

doi:10.4314/tjpr.v13i5.20

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…The triterpene concertation was determined using a method with acidified vanillin [ 72 ]. The diluted extract was evaporated at 70 °C, and then 0.4 mL of vanillin solution in glacial acetic acid (5%) ( w / v ) and 0.8 mL of perchloric acid were added on ice.…”

Section: Methodsmentioning

confidence: 99%

Urban Flora Riches: Unraveling Metabolic Variation Along Altitudinal Gradients in Two Spontaneous Plant Species

Mogîldea,

Mitoi,

Biță-Nicolae

et al. 2024

Plants

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Using resilient, self-sustaining plants in urban green spaces enhances environmental and cultural benefits and reduces management costs. We assessed two spontaneous plant species, Linaria vulgaris Mill. and Cichorium intybus L., in four sites from the surrounding urban areas, ranging in altitude from 78 to 1040 m. Protection against UV-B radiation is crucial for plants at higher altitudes, guiding our focus on UV-visible absorption spectra, fluorometric emission spectra, secondary metabolite accumulation, and pigment dynamics in leaves. Our findings revealed a slight increase in UV-absorbing compounds with altitude and species-specific changes in visible spectra. The UV-emission of fluorochromes decreased, while red emission increased with altitude but only in chicory. Polyphenols and flavonoids showed a slight upward trend with altitude. Divergent trends were observed in condensed tannin accumulation, with L. vulgaris decreasing and C. intybus increasing with altitude. Additionally, chicory leaves from higher altitudes (792 and 1040 m) contained significantly lower triterpene concentrations. In L. vulgaris, chlorophyll pigments and carotenoids varied with sites, contrasting with UV absorbance variations. For C. intybus, pigment variation was similar to absorbance changes in the UV and VIS range, except at the highest altitude. These observations provide valuable insights into species-specific strategies for adapting to diverse environmental contexts.

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Section: Methodsmentioning

confidence: 99%

Urban Flora Riches: Unraveling Metabolic Variation Along Altitudinal Gradients in Two Spontaneous Plant Species

Mogîldea,

Mitoi,

Biță-Nicolae

et al. 2024

Plants

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“…The content of total triterpenoids was determined according to Ke et al (2014) [76]. The results were expressed as milligrams of corosolic acid equivalents (CAE)/g of DW, based on the corosolic acid calibration curve (final concentration: 10-50 µg/mL, R 2 = 0.9769).…”

Section: Evaluation Of Total Triterpenoid Content (Ttc)mentioning

confidence: 99%

Phenological and Environmental Factors’ Impact on Secondary Metabolites in Medicinal Plant Cotinus coggygria Scop.

Ciocan

Tecuceanu

Enache-Preoteasa³

et al. 2023

Plants

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Cotinus coggygria Scop. (smoketree) is a phytotherapeutically valuable shrub growing in specific areas in many Eurasian countries. Exploring the intrinsic and extrinsic (abiotic) factors that modulate its secondary metabolism has fundamental and applicative importance. Three smoketree plants from the same population were studied for a period of 4.5 months. Their extracts were characterized using LC–MS/MS, HPLC–UV–VIS–DAD and colorimetric assays to determine the chemical composition and antioxidant potential. Multivariate analysis was applied to correlate the metabolomic data with registered habitat variables and phenological stages. The identified and quantified compounds belonged to the flavonoids (myricetin-3-O-galactoside, myricitrin) and hydrolysable tannins groups (pentagalloyl glucose, methyl gallate, methyl digallate I). Phenolic compounds and tannins were synthesized abundantly in the flowering and fruit stages, whereas flavonoids and triterpenes accumulated during senescence. The antioxidant activities varied between detection methods, samplings and individuals and were only punctually correlated with the compound contents in certain phenological stages. Based on the HCAbp analysis, the samples clustered under four groups, according to their metabolic profile. The CCA analysis revealed that during the reproductive stages (flower, fruit or seed), the secondary metabolism of the plants’ leaves is sensitive to the action of abiotic factors, while in senescence, the metabolic content is according to the phenological phase. This study provides a first attempt at understanding the interplay between the habitat and the metabolome of smoketree.

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Extraction of triterpene acids from loquat leaves via a novel hydrophobic deep eutectic solvent screened by COSMO-SAC model

Huang,

Guo,

Jin

et al. 2023

Journal of Cleaner Production

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Response Surface Optimized Extraction of Total Triterpene Acids from <i>Eriobotrya japonica</i> (Thunb) <i>Lindl</i> (Loquat) Leaf and Evaluation of their In vitro Antioxidant Activities

Cited by 6 publications

References 16 publications

Urban Flora Riches: Unraveling Metabolic Variation Along Altitudinal Gradients in Two Spontaneous Plant Species

Urban Flora Riches: Unraveling Metabolic Variation Along Altitudinal Gradients in Two Spontaneous Plant Species

Phenological and Environmental Factors’ Impact on Secondary Metabolites in Medicinal Plant Cotinus coggygria Scop.

Extraction of triterpene acids from loquat leaves via a novel hydrophobic deep eutectic solvent screened by COSMO-SAC model

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