CHEMOSPHERE
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2023
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IF 8.8
Xin Li,Jiaxian Li,Yuan Tian,Yang Yang,Wanping Chen,Runquan Wang,Yuerong Zhang,Kai Song,Yuan Wei,Guoying Wang,Gaofeng Shi
Peroxyl radicals (RO 2 ) are important components of atmospheric radical cycling and generation, but their formation, distribution and evolution mechanisms in the atmospheric environment have not been investigated. In this paper, we propose a novel atmospheric RO 2 radical trapping membrane that can trap low carbon number (Rc ≤ 5) RO 2 radicals and identify their R-group structures by fluorescence spectroscopy and chromatography. We also analyzed the composition and evolution mechanism of RO 2 species under different meteorological conditions in the atmospheric environment of Lanzhou, China, to provide scientific support for the treatment and research of atmospheric chemical pollution.
研究领域:
环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Haiwei Ren,Zhihang Xu,Ming Gao,Xueye Xing,Zhe Ling,Lichao Pan,Yaqin Tian,Yi Zheng,Wenguang Fan,Weixia Yang
Microcrystalline celluloses were isolated from four agricultural residues, including sweet sorghum stalk, Jerusalem artichoke stalk, grains stillage, and Chinese herb residue, and characterized in terms of physicochemical and structural properties. The obtained microcrystalline celluloses were composited with polylactic acid as a packing film for the preservation of Lanzhou lily. All the agricultural residues-derived microcrystalline celluloses were in cellulose I β structure with high purity and good thermal stability . Microcrystalline celluloses from sweet sorghum stalk had a higher degree of polymerization (327) and crystallinity (70.52 %) than others. The preservation effect of lily bulbs packaged by films were significantly improved indicated by the lessened weight loss rate and the meliorative hardness and whiteness, which ascribe to the repressed oxidation reactions . Polylactic acid/microcrystalline cellulose composite films prepared from sweet sorghum straw have been proved the most effective. This work could offer a value-added outlet for agricultural residues to produce microcrystalline celluloses-based biocompatible films for preservation of Lanzhou lily.
研究领域:
材料科学
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食品科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Foods
·
2024
·Vol. 13
·期 13
·2106
·
IF 4.7
Yuge Guan,Sainan Lu,Yan Sun,Rentao Zhang,Xinghua Lu,Linjiang Pang,Lei Wang
The Lanzhou lily is a regionally distinctive vegetable; the emergence of lightly processed lilies has addressed the inconvenience of consuming fresh lilies. However, the cleaning and impurity removal during the processing of lightly processed lily may strip off its original protective barrier and affect the edible quality. As one of the preservation methods, tea tree essential oil (TTEO) has the characteristics of being green, safe, and efficient preservative properties. This study focused on investigating the effects of different concentrations (25 μL/L, 50 μL/L, and 100 μL/L) of TTEO on the quality and microbiological safety of lightly processed lily. The results showed that compared with the control, appropriate concentrations of TTEO treatment could delay weight loss, improve appearance, firmness, and sensory quality, and maintain microbiological safety with the best effect observed at 50 μL/L. Meanwhile, TTEO treatment induced phenylalanine ammonia-lyase activity, thereby increasing the total phenolic content. Furthermore, TTEO enhanced the superoxide dismutase (SOD) and ascorbate peroxidase (APX) activity, which reduced O2-· production rate and H2O2content. TTEO inhibited lipoxygenase (LOX) activity, reducing the relative conductivity and malondialdehyde content, thereby delaying lipid peroxidation and quality deterioration. This indicates that TTEO could enhance antioxidant capacity by regulating reactive oxygen species (ROS) metabolism and delay the quality deterioration of lightly processed lily by inhibiting lipid peroxidation.
研究领域:
食品科学
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植物生理学
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微生物学
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产品关联
DOI
PubMed
高影响因子
Sustainability
·
2023
·Vol. 15
·期 18
·13770
·
IF 3.9
Haiwei Ren,Siqi Li,Ming Gao,Xueye Xing,Yaqin Tian,Zhe Ling,Weixia Yang,Lichao Pan,Wenguang Fan,Yi Zheng
Green biodegradable bio-based films have gained interest in replacing petroleum-derived plastic packaging materials as a new preservation strategy for fruits and vegetables to alleviate environmental pressures. In this study, we aimed to develop novel biodegradable composite films based on microcrystalline cellulose (MCC) reinforced polylactic acid (PLA). Our results demonstrated that the addition of 3% MCC to PLA could improve its tensile strength. Scanning electron microscopy analysis revealed that MCC dispersed well in PLA at lower content while agglomerated at higher content. It was discovered that all four types of MCC/PLA biocomposite films could retard the color change of Lanzhou lily bulbs, accompanied by maintaining favorable total soluble solid, total sugar, total polyphenols, and flavonoid content, inhibiting the activities of phenylalanine ammonia-lyase and the content of malondialdehyde during storage. Moreover, the preservation effect of MCC/PLA biocomposite films on Lanzhou lily bulbs was evaluated using a membership function, and the SSS MCC/PLA biocomposite film demonstrated a favorable fresh-keeping effect. In conclusion, four types of MCC from different biomass materials added to PLA-based products can be beneficial in improving the attractive properties of biocomposite films. These films are expected to replace petroleum-derived plastics as a new packaging material for preserving Lanzhou lily bulbs.Keywords:Lanzhou lily bulbs;preservation;polylactic acid;microcrystalline cellulose;biocomposite films;packaging material
研究领域:
食品科学
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材料科学
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植物学
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2024
·Vol. 171
·期 8
·087521
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IF 3.1
Qiaoning Dang,Bolu Sun,Hongxia Shi,Quhuan Ma,Yuhong Liu,Haoye Zou,Xinlan Wang,Xuanxiu Da,Miao Zhou,Ying Lv,Lin Yang,Xiaofeng Shi
Fusarium acid (FSA) serves as a highly sensitive biomarker for the early warning of bulb rot in Lanzhou lily caused by Fusarium oxysporum infection. Realizing its highly sensitive, accurate, and rapid detection is crucial for the early warning and control of lily bulb rot. Herein, an enzyme biosensor based on the enzyme inhibition principle was developed for the rapid detection of FSA. Firstly, chitosan-functionalized carboxylated multi-walled carbon nanotubes (CS@cMWCNTS) and gold nanoparticles (AuNPs) were modified on a bare electrode by drop coating and electrochemical deposition methods, respectively. Subsequently, dopamine β-hydroxylase (DBH) was firmly immobilized on the electrode surface through the gold-sulfur bond. Because the activity of DBH can be inhibited by FSA, which leads to a noticeable change in the signal response during the conversion of dopamine (DA) to norepinephrine (NA). Under optimized experimental conditions, the sensor exhibits an excellent linear relationship in the concentration range of 1.00 × 10−5 μg ml−1 ∼ 1.00 × 103 μg ml−1 with the correlation coefficient of 0.9856 and the detection limit is 4.60pg ml−1. Additionally, the sensor showed good stability, repeatability (RSD 1.85%), and selectivity. The method was applied to analyze FSA in the extraction from Lanzhou lily with a recovery higher than 97.59% and RSD less than 1.383%. This method enables the highly sensitive and rapid detection of FSA in real samples, and provides scientific basis and technical support for early warning of diseases and accurate implementation of prevention and control strategies in crop planting and production.
研究领域:
植物病理学
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传感器技术
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农业科学
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产品关联
DOI
高影响因子
SCIENTIA HORTICULTURAE
·
2023
·
IF 4.3
Cuiping Hua,Zhanjun Zhang,Zhihong Guo,Hailian Wei,Yajun Wang,Ruoyu Wang,Yubao Zhang,Yang Qiu,Zhongkui Xie
Phenolics from the rhizosphere soil are a key factor that leads to obstacles in the continuous cropping system. While we tested the phenolics in the rhizosphere soil of Lanzhou lily ( Lilium davidii var . unicolor ), a high relative content 4-Vinyl Guaiacol (4-VG) was firstly detected. Therefore, we attempted to explore the role of 4-VG stress in Lanzhou lily physiology and disease, and the potential enhanced effects of pathogenicity in Fusarium oxysporum B4 ( F. oxysporum B4). The effects of different concentrations of 4-VG (0, 0.01, 0.05, 0.1, 0.2, 0.5, 1 mM) on the growth of F. oxysporum B4 and the production of fusaric acid were examined. The result indicated that 4-VG inhibited the growth of F. oxysporum B4 hypha, promoted spore germination, and increased fusaric acid content. Furthermore, transcriptome sequencing of F. oxysporum B4 hypha after stress mediated by 0.5 mM 4-VG was performed to help characterize the response mechanism to 4-VG. Compared with the control group, differentially expressed genes (DEGs) were mainly related to the growth and fusaric acid synthesis of F. oxysporum B4. Except that, the increase of infection area formed after F. oxysporum B4 infected the squama of Lanzhou lily under the high concentration of 4-VG was measured and indicated that 4-VG played a role in the F. oxysporum B4 infection. The exogenous addition of 4-VG significantly inhibited the growth and health of Lanzhou lily. Under the dual stress of F. oxysporum B4 and different concentrations of 4-VG, it significantly enhanced the incidence and disease index of Lanzhou lily. These results suggest the key role of 4-VG from rhizosphere soil in the occurrence of Lanzhou lily Fusarium wilt.
研究领域:
植物病理学
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分子生物学
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农业科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）