Journal of Cleaner Production
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2026
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IF 10.7
Yang Yang,Xinyu Yang,Huiyan Gu,Lei Yang
Abies holophylla oil extracted cleanly via microwave hydrodiffusion-gravity (MHG). • MHG maximized essential oil yield under optimized conditions (385 W, 35 min). • MHG reduced energy consumption and CO 2 emissions by 83.7% versus hydrodistillation. • Solvent-free MHG achieved the highest AGREEprep greenness score. • MHG supported biomass valorization through monoterpene enrichment. Forest conifer biomass is a promising renewable source of high-value volatile products, but its industrial utilization requires extraction routes that reduce process burden while preserving product quality. In this study, microwave hydrodiffusion-gravity (MHG) was developed as a cleaner production-oriented strategy for extracting essential oil (EO) from fresh Abies holophylla needles. The MHG process was optimized by face-centered central composite design and kinetic modeling, then benchmarked against microwave-assisted hydrodistillation (MHD), solvent-free microwave extraction (SFME), and conventional hydrodistillation (HD) in terms of extraction yield, energy and carbon performance, process greenness, volatile composition, and value-added bioactivity. Under the optimized conditions (385 W, 35 min), MHG produced the highest EO yield (16.55 ± 0.83 mL/kg DW). Compared with HD, MHD, and SFME, MHG technology reduces energy consumption and CO 2 emissions. Consistent with this, the AGREEprep analysis showed that MHG achieved the highest green score (0.62), reflecting its advantages in solvent-free operation, lower process load, reduced wastewater generation, and higher energy efficiency. GC-MS analysis further indicated that MHG favored enrichment of monoterpene hydrocarbons, particularly α-pinene and camphene. In parallel, the EO from MHG exhibited the strongest in vitro acetylcholinesterase (AChE) inhibitory activity among the reference extraction methods. Overall, the results demonstrate that MHG can simultaneously improve resource-use efficiency, reduce preparation burden, and enhance product functionality, providing a practical, cleaner extraction option for the high-value utilization of A. holophylla needles. Download: Download high-res image (282KB) Download: Download full-size image
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INDUSTRIAL CROPS AND PRODUCTS
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2023
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IF 5.9
Shuzhen Yang,Min He,Dongmei Li,John Shi,Litao Peng,Liu Jinjing
The antifungal activity of essential oils is closely related to their components and contents. The study aimed to explore the structural activity of essential oil (EO) components against Diaporthe fusicola and modes of action. The results showed most of the tested compounds showed inhibitory effects on the growth of D. fusicola and carvacrol was the strongest one with half maximal effective concentration (EC 50 ) of 11.21 μL/L. The chemical structures of the tested compounds had great influences on their antifungal activity, in which the presence of CHO group, C C group or Ar-OH group in any EO components significantly increase the antifungal potency, but the increment of carbon chain length of saturated fatty aldehyde decreased antifungal activity. In order to analyze the antifungal action mode of EO components, the correlations between EC 50 and oxidation-reduction potential (ORP), cell-membrane permeability and respiration inhibition of the tested compounds were further evaluated. The results showed antifungal activities of these EO components seemed to be accomplished by increase of cell membrane permeability and inhibition of the respiration of D. fusicola . The levels of increased membrane permeability, inhibited respiration and ORP of chemicals were all significantly correlated with EC 50 . This results indicated the action mode of these EO components against D. fusicola may be associated with the increment of cell membrane permeability and respiration inhibition via disrupting redox homeostasis in fungal cells, and oxidation-reduction property could be used as a secondary indicator for screening the antifungal agent from EO components.
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JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
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2023
·Vol. 103
·期 6
·2838-2847
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IF 4.1
Xiaomin Zhang,Gaofeng Hu,Chaoyang Xu,Wen Nie,Kezhou Cai,Hongmei Fang,Baocai Xu
BACKGROUND Ginger and its extracts have been frequently used in food processing and pharmaceuticals. However, the influence of ginger and its key compounds on benzo[a]pyrene (BaP) production in meat processing has not been investigated. The purpose of this study was to explore the effect of application of ginger and its important active ingredients on BaP formation and the mechanism of inhibiting BaP formation in charcoal-grilled pork sausages. RESULTS The DPPH scavenging (23.59–59.67%) activity and the inhibition rate of BaP (42.1–68.9%) were significantly increased ( P < 0.05) with increasing ginger addition. The active components extracted by supercritical carbon dioxide from ginger were identified by gas chromatography–mass spectrometry and 14 representative compounds (four terpenes, two alcohols, two aldehydes, four phenols and two other compounds, totaling 77.57% of the detected compounds) were selected. The phenolic compounds (eugenol, 6-gingerol, 6-paradol and 6-shogaol, accounting for 29.73% of the total composition) in ginger played a key role and had the strongest inhibitory effect on BaP (61.2–68.2%), whereas four other kinds of compound showed obviously feeble inhibitory activity (6.47–17.9%). Charcoal-grilled sausages with phenolic substances had lower values of thiobarbituric acid-reactive substances, carbonyl and diene (three classic indicators of lipid oxidation) ( P < 0.05). CONCLUSION Ginger and its key compounds could effectively inhibit the formation of BaP in charcoal-grilled pork sausages. Phenolic compounds make the strongest contribution to the inhibition of Bap formation, and the inhibitory mechanism was related to the inhibition of lipid oxidation. © 2023 Society of Chemical Industry.
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高影响因子
MICROCHEMICAL JOURNAL
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2022
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IF 5.304
Chengyu Zheng,Qin'an Zhou,Wenqing Shao,Jing Zhang,Jun Wang
Platycladus orientalis (L.) is a typical urban greening tree in Asia, but the young leaves of P. orientalis are vulnerable to pathogenic fungi with hidden early signs. In this study, we investigated the volatile organic compounds (VOCs) emissions of the Alternaria alternate infected P. orientalis plants, for the first time, using the gas chromatography-ion mobility spectrometry (GC-IMS) combined with chemometric approaches. Results showed that the A. alternate infection could reduce the VOCs release of P. orientalis leaves. The α-pinene and β-pinene emissions were down to 70% and 55% of controls on day 10, respectively. The destructive inoculated plants responded more to the A. alternate , both in the VOCs emissions and the fungal growth. The (Z)-3-hexenol, n-hexanol, α-pinene, and β-pinene can serve as potential markers for infection discrimination, and their IMS signal intensities were calibrated with corresponding volume concentrations ranging from 0 to 250 μg/L. The PLS-DA model based on GC-IMS fingerprints can correctly classify at least 83% of samples in infection durations after fungal inoculation for the first 10 days. The PLSR model can predict the fungal colony counts in the P. orientalis needles (R c 2 ＞0.97 and R p 2 ＞0.92) with good robustness, whose RMSEP was lower than 0.68 (×10 6 CFU g −1 ) in predict set. In a word, the GC-IMS-based approach had the potential to evaluate A. alternate infection in P. orientalis , and the variation of potential markers can provide reference to its fungal infection monitor with millisecond response in the forest.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2021
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IF 5.279
Yujiao Cheng,Guijie Li,Houjiu Wu,Linhua Huang,Hua Wang
Light-induced off-flavor compounds in Ponkan mandarin juice were investigated during its shelf-life by headspace solid-phase microextraction multidimensional gas chromatography–mass spectrometry/olfactometry (MDGC-MS/O) and a GC–MS/pulsed flame photometric detector (GC–MS/PFPD). A total of 34 aroma-active compounds with flavor dilution (FD) factors from 2 to 128 were tentatively identified by aroma extract dilution analysis-MDGC-MS/O. Among them, a light-induced off-flavor compound with a high FD factor, methional (cooked potato), was positively identified in the Ponkan mandarin juice at the end of the shelf-life. In addition, 11 volatile sulfur compounds (VSCs), including 6 screened shelf-markers (variable identification, VID > 0.80), were identified in Ponkan mandarin juice by a sulfur detector (PFPD). Four VSCs exhibited odor activity values exceeding 1. Three VSCs (methanethiol, dimethyl trisulfide, and methional) were confirmed as key light-induced off-flavor compounds in Ponkan mandarin juice based on addition/omission experiments. Furthermore, light irradiation accelerated the degradation of sulfur precursors (methionine and MMS) and the formation of these VSCs leading to an increase in off-flavor intensity.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2020
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IF 5.278
Yong Liu,Yuefeng Wu,Miaojun Su,Weihua Liu,Xiying Li,Fujian Liu
A class of Brønsted–Lewis acid bifunctionalized ionic liquids based heteropolyacid hybrid (BLA-ILs-HPA) solid acids were developed by combining the double sulfonic groups grafted, ionic liquids based heteropolyacid hybrid with Lewis acidic centers (M = Zn, Co, Fe, Ni, Cu). The prepared BLA-ILs-HPA show both Brønsted and Lewis acidic sites with extremely-high acid strength and enhanced stabilities, as determined by FT-IR, Py-IR, TG, XPS and 31 P solid state NMR results. BLA-ILs-HPA were successfully applied in esterification camphene with acetic acid to produce isobornyl acetate, and dehydration of glucose to produce 5-hydrozymethylfural. BLA-ILs-HPA show enhanced catalytic activities in comparison with various acid catalysts. The effects of reaction temperatures, initial reactant molar ratio, catalyst dosage, and reaction time were studied in detail. The optimal reaction conditions were obtained, and the experimental data was successfully correlated by a pseudohomogeneous (PH) reaction kinetic model in the temperature range of 313.15–333.15 K. The calculated values obtained by the reaction kinetic model were in good agreement with the experimental data. Moreover, as a heterogeneous reaction catalyst, BLA-ILs-HPA can be recovered by simple treatment. After six times cycling, the decreasing in the catalytic activity of BLA-ILs-HPA could not be observed significantly, suggesting their good reusability.
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COMPUTERS AND ELECTRONICS IN AGRICULTURE
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2020
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IF 3.858
Chengyu Zheng,Zhenhe Wang,Jing Zhang,Jun Wang,Jianli Zhong,Yongwei Wang
Platycladus orientalis plants in China are experiencing a serious problem with wood-boring beetles, but conventional physical detection methods cannot perform well due to hidden larvae and less obvious symptoms in the early infestation. In this study, the volatile organic compounds (VOCs) of P. orientalis were investigated using gas chromatography-ion mobility spectrometry (GC-IMS) to identify its internal infestation. An image-based evaluation method of the degree of internal wood damage was proposed, the principal component analysis (PCA) based on specific markers was applied for natural clustering of samples, and unsupervised learning approaches based on specific markers and automatically located peaks were used to create predictive models for sample classification. The results showed that the herbivore-induced plant volatiles (HIPVs) of P. orientalis samples had two main characteristics compared with undamaged plants. One was the emergence of several compounds such as C 3 -C 6 ketones, aldehydes, and alcohols, while the other was the obvious content variation of several monoterpenes and their derivatives. The classification models based on specific markers and automatically located peaks could correctly classify at least 89.5% and 87.9% of the samples, respectively. In a word, these results proved that GC-IMS based approaches combined with different feature extraction methods have the potential to identify the internal infestation of wood-boring beetles in P. orientalis .
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CHEMICAL ENGINEERING SCIENCE
·
2023
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IF 4.7
Mingzu Liu,Xiuxiu Zhao,Zefeng Ma,Bing Yuan,Fengli Yu,Congxia Xie,Shitao Yu
As a naturally rigid polycyclic biomass platform compound without oxygen, α-pinene has always been expected to develop high-energy–density fuel with both good combustion performance and cryogenic properties by increasing carbon number in a high atom economical way. The present work has explored the screening of alkylation blocks for α-pinene over H 3 PW 12 O 40 (HPW). Here, a novel pinene-based blended fuel was prepared through cross-alkylation of α-pinene with mixed isobutane/isobutene, the common low-cost feedstock of alkylated gasoline. The reaction conditions including feed composition, reaction time, catalyst dosage, and reaction temperature were optimized. The mechanism of the hybrid alkylation process was further computationally speculated and experimentally verified. Produced liquid hydrocarbon products after hydrogenation and vacuum distillation possessed higher net heat of combustion and flash point than those of pinane, and lower freezing point and viscosity than those of dimers fuel from pinene. These favorable performances indicate that alkylated pinanes have promising potential as high-energy aviation fuel.
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International Journal of Electrochemical Science
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2023
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IF 1.5
Manman Xia,Jun Li,Ruyan Lei,Baige Yuan,Ying Zhang,Peng Zhao,Xiao Li
Anatase titanium dioxide is considered a promising anode material for lithium-ion batteries (LIBs), however its application is restricted due to the poor Li + transport. Nano-crystallization and pore creation are regarded as two effective strategies for solving the above shortcomings. This study aims to realize the combination of the two strategies by synthesizing porous anatase TiO 2 nanofibres by electrospinning with camphene as the pore-creating agent. Porous anatase TiO 2 nanofibres as anode materials for LIBs demonstrated excellent electrochemical performance when a suitable content of camphene was added. The results indicated that a larger specific surface area (72 m 2 ·g -1 ) was obtained in anatase TiO 2 nanofibres with 12 wt.% camphene than in those without camphene (61 m 2 ·g -1 ). The former exhibited a higher initial discharge specific capacity (518.71/294.99 mAh·g -1 ) than the latter (305.56/114.68 mAh·g -1 ). Moreover, the former demonstrated outstanding cycle performance due to the higher retention rate of 21.7% obtained after 100 cycles. Meanwhile, an excellent rate performance was also achieved due to a larger average discharging specific capacity (58.96 mAh·g -1 ) being when the current density increased from 0.5 C to 10 C and recovered to 0.5 C (145.71 mAh·g -1 ). The improvement in electrochemical performance should be attributed to the low charge transfer resistance (R ct ) and large transportation rate of Li + resulting from the obtained high specific surface area.
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FOOD CHEMISTRY
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2023
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IF 8.8
Yujiao Cheng,Leng Han,Linhua Huang,Xiang Tan,Houjiu Wu,Guijie Li
Thermal pasteurization decreases the sensory quality of mandarin juice. Flavor composition was determined in four fresh-squeezed and heat-processed mandarin juice varieties using molecular sensory science approaches. The relationships between odorants and sensory profiles were analyzed, and markers for flavor deterioration were screened by multivariate statistical analysis. Seventy-four volatiles were identified, among which 36 odorants with flavor dilution factors ranging from 2 to 128 were detected by multidimensional gas chromatography-mass spectrometry/olfactometry (MDGC-MS/O) coupled with aroma extract dilution analysis (AEDA). Higher intensities of cooked and off-flavor notes were observed in the heated mandarin juice, which was related to the concentration changes of the methional, methanethiol, dimethyl sulfide, and carbon disulfide by partial least squares (PLS) analysis. Ten potential markers (methional, methanethiol, dimethyl sulfide, hydrogen sulfide, β -damascenone, camphene, trans - β -ionone, decanal, d -limonene, and α -pinene) were responsible for the sensory discrimination of fresh-squeezed and heated mandarin juices.
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高影响因子
GREEN CHEMISTRY
·
2019
·Vol. 21
·期 21
·5886-5895
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IF 9.405
Junjian Xie,Lun Pan,Genkuo Nie,Jiawei Xie,Yakun Liu,Chi Ma,Xiangwen Zhang,Ji-Jun Zou
The photoinduced conversion of biomass-derived chemicals to high value chemicals and advanced fuels is of great significance but still challenging. Herein, a green and efficient self-sensitized [2 + 2] cycloaddition process is developed to convert biomass-derived β-pinene and isophorone to spirocyclic molecules, which cannot be achieved by thermal catalytic conversion. The photoreaction can take place with isophorone as the self-sensitizer, with high selectivity and a yield of up to 91.1%. A triplet sensitization mechanism is disclosed by a combination of triplet quenching, phosphorescence quenching, Stern–Volmer kinetic analysis, DFT calculations and photochemical kinetic studies. When combined with hydrodeoxygenation, spiro-fuel is obtained with an overall yield of 85.0% showing a high density of 0.911 g mL−1 which is 16.8% higher than that of conventional aviation kerosene (ca. 0.78 g mL−1), along with excellent cryogenic properties. Notably the self-sensitized cycloaddition strategy can be extended to a wide range of biomass derived α,β-unsaturated ketones and alkenes. Thus, this work provides a promising ring-increasing route to upgrade low-density bio-derived feedstocks to high-density hydrocarbons.
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NATURAL PRODUCT RESEARCH
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2018
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IF 1.928
Guo-Feng Mao,Xiao-Chang Mo,Hatem Fouad,Ghulam Abbas,Jian-Chu Mo
Utilisation of Anagrus nilaparvatae is a promising and effective method for planthoppers manipulation. Twenty-seven components of remote lemongrass (Cymbopogon distans) oil were identified by GC/MS and nine volatiles were selected for behavioural experiments. In this study, we noted that the remote lemongrass oil was attractive to female A. nilaparvatae at concentrations of 0.1 and 1 mg/L. α-Pinene, β-pinene, eucalyptol, carveol and D-carvone attracted female wasps in the dose-dependent bioassays. Blend 1 (a mixture of eucalyptol, D-carvone, carveol, α-pinene, and β-pinene with ratios of remote lemongrass oil volatiles of 625:80:11:5:3) attracted female wasps at 10 mg/L, while blend 2 (a mixture of the same five volatiles at the same loading ratio) attracted them at 0.1 and 1 mg/L. These results suggested that plant essential oils could be attractants for natural enemies to control pests. The ratios of volatiles in the mixtures affect the attractiveness of the synthetic mixtures.
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高影响因子
危险品化学品经营许可证（带存储）