Journal of Sensors
·
2022
·
IF 2.336
Chenchen Zhou,Junjun Fan,Ruinan Tan,Qin Peng,Junhuo Cai,Wangxiang Zhang
Linalool is a well-known volatile compound. It is usually extracted from plants or synthesized by chemical methods. However, there is still no rapid screening method for plants with high linalool content. Therefore, we aimed to establish a method determining linalool content in Osmanthus fragrans by electronic nose (E-nose). The volatile gases of three cultivars of O. fragrans were characterized by gas chromatography-mass spectrometry (GC-MS) and E-nose. Different concentrations of linalool were measured by E-nose. Then, the E-nose data were subjected to principal component analysis (PCA) and linear discriminant analysis (LDA) to establish a discriminant model for determining linalool concentrations. Prediction models based on principal component regression (PCR) and multiple linear regression (MLR) were developed from all sensors and feature sensors to determine linalool concentrations in the three cultivars of O. fragrans flowers. Finally, the linalool concentrations determined by gas chromatography were used to verify the accuracy of the prediction model. The results show that linalool had the highest abundance among the volatile compounds of O. fragrans, and the MLR prediction model had an of 0.992 in calibration sets and an of 0.895 in prediction sets using 10 sensors. This study describes a rapid and accurate method for the detection and quantification of linalool concentrations.
研究领域:
植物学
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分析化学
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产品关联
DOI
高影响因子
Journal of Applied Research on Medicinal and Aromatic Plants
·
2020
·
IF 1.857
Chenghui Pan,Laijun Zhao,Dayun Zhao
Osmanthus fragrans (Lour) flower is a typical fragrant herb in eastern countries containing multiple bioactive compounds, the extract of which has been widely used as a natural antioxidant additive in food and cosmetics. However, the existing extraction methods use organic solvents during the extraction process, which is non-eco-friendly and harmful to human health. In this study, we introduce, to our knowledge for the first time, microwave-assisted deep eutectic solvent extraction (MA-DESE) to extract antioxidant components from O. fragrans flower. The MA-DESE procedure was optimised, validated, and compared with that of traditional solvent extraction by using response surface methodology. The maximum antioxidant activity of 101.81 mg Trolox equivalent/g of dry weight was achieved at the following optimum MA-DESE parameters: microwave power, 497.12 W; microwave treatment time, 59.03 s; and solid–liquid ratio, 31.14 mL/g. In addition, UPLC-MS analysis showed a greater variety of antioxidant components, such as olivil and osmanthuside H, in O. fragrans flower extract obtained by MA-DESE than by the traditional ethanol reflux method. These results demonstrated that MA-DESE, which is safe and eco-friendly, could substitute for the conventional solvent extraction process, which is time-consuming and tedious, for the extraction of antioxidant components from O. fragrans flower.
研究领域:
植物学
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食品科学
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环境科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2018
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IF 3.909
Baolei Fan,Tingting Li,Xiaofang Song,Chao Wu,Chunqi Qian
A specific HPLC-MS/MS (High-Performance Liquid Chromatography with tandem Mass Spectrometry) method was developed and validated for simultaneous determination of several monosaccharides in three kinds Osmanthus fragrans Lour . After extraction, separation, protein removal, pigment removal and hydrolysis , monosaccharides was finally obtained from Osmanthus fragrans Lour . Positive ion mode detection and Multiple Reaction Monitoring (MRM) mode were used for quantitative analysis by PMP pre-column derivatization and Electrospray Ionization (ESI). Analysis and content determination of 6 monosaccharide components in 3 kinds of Osmanthus fragrans Lour . The HPLC separation was achieved on a Shim-pack VP-ODS6022748 (150 L × 2.0) with gradient elution at a flow rate of 0.2 ml/min in a run time of 40 min, and the mobile phase was acetonitrile-5 mmol/L ammonium acetate. PMP derivatization in HPLC-MS/MS can accurately measure Osmanthus fragrans Lour . mannose (Man), ribose (Rib), rhamnose (Rha), galacturonic acid (Gal UA), glucose (Glu), galactose (Gal), xylose (Xyl), fucose (Fuc). The results showed that HPLC-MS/MS pre-column derivatization method was simple and rapid, with small measurement error, but high sensitivity and good repeatability. The analysis of monosaccharide components in polysaccharide components has important practical significance.
研究领域:
植物化学
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分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Xiaojing Sheng,Yingnan Lin,Jianmin Cao,Yang Ning,Xueli Pang,Jihong Wu,Fanyu Kong
Sweet osmanthus (Osmanthus fragrans Lour.) (OF) is one of the ten most famous flowers in China for its unique and delicate fragrance. A combined solid-phase microextraction and solvent-assisted flavor evaporation method was used to accurately capture the overall aromatic profile and characterize the predominant odorants of fresh osmanthus with the help of gas chromatography (GC)–olfactometry and comprehensive two-dimensional GC–quadrupole time-of-flight mass spectrometry (GC × GC–QTOF–MS). Twenty-six volatiles were identified for the first time in OF. A total of 23 potent odorants, dominated by monoterpene oxides and C6 aliphatic aldehydes, were identified. The efficacy of pectinase, β-glucosidase, and their combination on the aroma enhancement of OF was evaluated by quantitation of the target aroma components using GC–triple quadrupole–MS. The total concentration of key aroma components increased in all three enzyme treatment groups, and the increase was more significant in two β-glucosidase-treated groups. Changes in odor activity values and odor spectrum values of key odorants indicated that the pectinase-treated sample had more prominent floral, green, and potato-like scents. In contrast, the β-glucosidase-treated sample had more dominant floral, woody, almond-like, and fruity notes but less green odor, which was confirmed by sensory evaluation. β-Glucosidase and pectinase complement one another very well, and together, promote a remarkable aroma enhancement in OF.
研究领域:
农学
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食品科学
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分析化学
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植物生化
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2024
·Vol. 25
·期 18
·10198
·
IF 4.9
Min Zhang,Zi-Han Chai,Cheng Zhang,Lin Chen
Carotenoids are important natural pigments that are responsible for the fruit and flower colors of many plants. The composition and content of carotenoid can greatly influence the color phenotype of plants. However, the regulatory mechanism underling the divergent behaviors of carotenoid accumulation, especially in flower, remains unclear. In this study, a new cultivarOsmanthus fragrans‘Yanzhi Hong’ was used to study the regulation of carotenoid pigmentation in flower. Liquid chromatograph–mass spectrometer (LC-MS) analysis showed thatβ-carotene, phytoene, lycopene,γ-carotene, and lutein were the top five pigments enriched in the petals of ‘Yanzhi Hong’. Through transcriptome analysis, we found that the expression of the structural genes in carotenoid pathway was imbalanced: most of the structural genes responsible for lycopene biosynthesis were highly expressed throughout the flower developmental stages, while those for lycopene metabolism kept at a relatively lower level. The downregulation ofLYCE,especially at the late developmental stages, suppressed the conversion from lycopene toα-carotene but promoted the accumulation ofβ-carotene, which had great effect on the carotenoid composition of ‘Yanzhi Hong’. Ethylene response factor (ERF), WRKY, basic helix-loop-helix (bHLH), v-myb avian myeloblastosis viral oncogene homolog (MYB),N-Acetylcysteine (NAC), auxin response factor (ARF), and other transcription factors (TFs) have participated in the flower color regulation of ‘Yanzhi Hong’, which formed co-expression networks with the structural genes and functioned in multiple links of the carotenoid pathway. The results suggested that the cyclization of lycopene is a key link in determining flower color. The modification of the related TFs will break the expression balance between the upstream and downstream genes and greatly influence the carotenoid profile in flowers, which can be further used for creating colorful plant germplasms.
研究领域:
植物学
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遗传学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Changhao Wu,Yuying Qin,Ze Zhao,Guohe Zhang,Zhentao Bian,Xuanxuan Zhao,Liying Fang,Yunyu Sun,Ligang Zhang,Keying Zhang
The sustainable conversion of biomass wastes into high-performance carbon materials for supercapacitors continues to present a critical challenge. Herein, a green and facile strategy was proposed to synthesize N/S co-doped porous carbons using discarded Osmanthus fragrans flowers as the precursor. By employing a NaCl/ZnCl 2 molten-salt system as a synergistic template/activator and urea as the heteroatom source, hierarchical porous architectures with interconnected networks were constructed. Systematic investigations revealed that activation temperature critically governs pore structure evolution, surface chemistry, and electrochemical performance. The optimized O-PC-700 °C sample exhibited a high specific surface area (938.6 m 2 g −1 ), a balanced micro-/meso-/macroporosity distribution, and abundant N/S/O functional groups. As a supercapacitor electrode, O-PC-700 °C delivered a remarkable specific capacitance of 230 F g −1 at 1 A g −1 in a three-electrode system. The symmetric device achieved an exceptional energy density of 68.88 Wh kg −1 at 500 W kg −1 and outstanding cycling stability (retaining almost 100 % capacitance after 10,000 cycles). The dual activation mechanism of molten salts and heteroatom doping synergistically enhances ion accessibility, pseudo-capacitance, and conductivity. This work not only advances the sustainable valorization of floral biomass but also provides a versatile strategy for designing hierarchical carbon materials for high-energy-density energy storage systems.
研究领域:
材料科学
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能源存储
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环境科学
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化学工程
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产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 17
·6305
·
IF 4.6
Zhemin Xie,Sijie Diao,Ruizheng Xu,Guiyu Wei,Jianfeng Wen,Guanghui Hu,Tao Tang,Li Jiang,Xinyu Li,Ming Li,Haifu Huang
The exploration of low-cost, high-performance adsorbents is a popular research issue. In this work, a straightforward method that combined hydrothermal with tube firing was used to produce Osmanthus fragrans biomass charcoal (OBC) from low-cost osmanthus for dye adsorption in water. The study examined the parameters of starting concentration, pH, and duration, which impacted the process of adsorption of different dyes by OBC. The analysis showed that the adsorption capacities of OBC for six dyes: malachite green (MG,C0= 800 mg/L, pH = 7), Congo red (CR,C0= 1000 mg/L, pH = 8), rhodamine B (RhB,C0= 500 mg/L, pH = 6), methyl orange (MO,C0= 1000 mg/L, pH = 7), methylene blue (MB,C0= 700 mg/L, pH = 8), and crystalline violet (CV,C0= 500 mg/L, pH = 7) were 6501.09, 2870.30, 554.93, 6277.72, 626.50, and 3539.34 mg/g, respectively. The pseudo-second-order model and the Langmuir isotherm model were compatible with the experimental findings, which suggested the dominance of ion exchange and chemisorption. The materials were characterized by using XRD, SEM, FTIR, BET, and XPS, and the results showed that OBC had an outstanding specific surface area (2063 m2·g–1), with potential adsorption mechanisms that included electrostatic mechanisms, hydrogen bonding, and π-π adsorption. The fact that the adsorption capacity did not drastically decrease after five cycles of adsorption and desorption suggests that OBC has the potential to be a dye adsorbent.Keywords:osmanthus fragrans biomass charcoal;adsorbent;high efficiency;dye adsorption;regeneration cycle
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Ling Zhou,Qingyin Tian,Wenjie Ding,Hongmin Hu,Tingting Shi,Guogui Ning,Lianggui Wang,Yuanzheng Yue,Xiulian Yang
Osmanthus fragrans have a unique aroma, its extracts and its constituents have a wide range of biological activities, making them of great industrial value. β-ionone is a crucial factor in determining the aroma quality of O. fragrans . The synthesis mechanism of β-ionone is essential for studying the aromatic compounds in O. fragrans . This study demonstrated that the OfMYB1R114-OfSDIR1-like- OfCCD4 module regulates β-ionone synthesis in O. fragrans . A MYB-related transcription factor OfMYB1R114 increased β-ionone aroma substance and elevated OfCCD4 expression level through binding to the OfCCD4 promoter and activating its expression; this demonstrated a positive loop in β-ionone synthesis. Screening for interacting proteins using a cDNA library of O. fragrans petals, the interaction pair between OfMYB1R114 and OfSDIR1-like was validated. In addition, OfSDIR1-like negatively regulated β-ionone synthesis by ubiquitinating the OfMYB1R114 protein and decreasing the ability of OfMYB1R114 to activate its downstream target gene OfCCD4 . Interestingly, OfMYB1R114 could directly bind to the OfSDIR1-like promoter and repress its transcription, revealing a negative feedback loop between OfMYB1R114 and OfSDIR1-like. Hence, this suggests that OfSDIR1-like is a new novel regulator that functions in β-ionone synthesis via the OfMYB1R114-mediated aroma pathway. The mechanistic framework revealed by the studies is that the OfMYB1R114-mediated module OfMYB1R114-OfSDIR1-like- OfCCD4 regulates β-ionone synthesis. It sheds light on the molecular mechanisms at the basis of aroma synthesis in O. fragrans and provides theoretical basis and technical guidance for the comprehensive utilisation and industrial development of O. fragrans aroma substance.
研究领域:
植物科学
·
分子生物学
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生物化学
·
农学
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产品关联
DOI
高影响因子
Journal of Pharmaceutical Analysis
·
2020
·
IF 2.673
Xiaoyan Liao,Yuan Hong,Zilin Chen
The roots of O. fragrans are also a valuable resource in addition to its flowers and fruits. In this study, the HPLC-MS/MS method used for analyzing the chemical constituents in O. fragrans roots extract was developed, which showed high sensitivity for both qualitative and quantitative analyses. Thirty-two compounds were first discovered in O. fragrans roots, one compound of which was reported for the first time. The simultaneous determination method for acteoside, isoacteoside, oleuropein and phillyrin was validated to be sensitive and accurate. Then it was applied to determine the content of bioactive components in O. fragrans roots from different cultivars. The content of oleuropein and phillyrin in the twelve batches was relatively stable, while the content of acteoside and isoacteoside varied greatly. Moreover, the therapeutic material basis and mechanism of O. fragrans roots exerting its traditional pharmacodynamics were analyzed by network pharmacology. The results showed that O. fragrans roots might be effective for the treatment of inflammation, cardiovascular diseases, cancer, and rheumatoid arthritis, which is consistent with the traditional pharmacodynamics of O. fragrans roots. This work can provide an analytical method for the comprehensive development of O. fragrans roots.
研究领域:
药理学
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分析化学
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中医药学
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植物科学
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产品关联
DOI
PubMed
高影响因子
ANALYST
·
2019
·Vol. 144
·期 23
·6981-6988
·
IF 4.019
Xiaoyan Liao,Fangli Hu,Zilin Chen
Triterpenoids, as an important family of plant secondary metabolites, have important biological activities associated with health and disease prevention. In this work, we proposed a HPLC-MS method for profiling multiple groups of triterpenoid acids and triterpenoid esters differing only in one position of the hydroxyl or methyl group in O. fragrans fruits. A total of thirty-one compounds were identified, and twenty-seven components were discovered in O. fragrans fruits for the first time. The HPLC-MS profiling method was applied in the analysis of the triterpenoids of O. fragrans flowers, and the time courses of triterpenoids of O. fragrans fruits.
研究领域:
分析化学
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植物化学
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植物代谢组学
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-10
·
IF 4.259
Mao Shuqin,Wang Kaidi,Lei Yukun,Yao Shuting,Lu Baiyi,Huang Weisu
The antioxidant synergistic effects of Osmanthus fragrans flowers with green tea were evaluated, and their major antioxidant compounds contributed to the total amount of synergy were determined. The antioxidant compounds in O. fragrans flowers with green tea were identified by LC-MS and quantified by UPLC-PDA. The synergistic antioxidant interactions between O. fragrans flowers with green tea and their antioxidant compounds were tested using the Prieto’s model after the simulated digestion. The main antioxidant compounds in O. fragrans flowers were acteoside and salideroside, whereas the main antioxidant compounds in green tea were caffeine, gallic acid, and L-epicatechin. The significant synergistic effect between O. fragran s flowers and green tea was observed and among nearly all of the combinations of their antioxidant compounds. Among the combinations, acteoside and gallic acid contributed most to the antioxidant synergy between O. fragrans flowers and green tea. However, the simulated digestion decreased this antioxidant synergy because it reduced the contents and the antioxidant capacities of their compounds, as well as the antioxidant synergy among the compounds.
研究领域:
食品科学
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植物化学
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DOI
PubMed
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-10
·
IF 4.259
Zhou Fei,Zhao Yajing,Li Maiquan,Xu Tao,Zhang Liuquan,Lu Baiyi,Wu Xiaodan,Ge Zhiwei
This study was aimed at investigating the chemical stability (the thermal, light and pH stability) of phenylethanoid glycosides (PhGs) in Osmanthus fragrans Lour. flowers, identifying the degradation products of acteoside and salidroside (major PhGs in O. fragrans flowers) by UPLC–QTOF–MS and studying the anti-hypoxia activity of PhGs after degradation. The degradation of PhGs followed first-order reaction kinetics, and the rate constant of acteoside (4.3 to 203.4 × 10 −3 day −1 ) was higher than that of salidroside (3.9 to 33.3 × 10 −3 day −1 ) in O. fragrans flowers. Salidroside was mainly hydrolyzed to tyrosol during storage, and the degradation products of acteoside were verbasoside, caffeic acid, isoacteoside, etc. In a model of cobalt chloride (CoCl 2 )-induced hypoxia in PC12 cells, the anti-hypoxia ability of PhGs decreased after degradation, which resulted from the reduction of PhGs contents. Particularly, caffeic acid exhibited stronger anti-hypoxia ability than acteoside and could slightly increase the anti-hypoxia ability of degraded acteoside. The results revealed that high temperature, high pH and light exposure caused PhGs degradation, and thus the anti-hypoxia ability of PhGs reduced.
研究领域:
药理学
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植物化学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）