INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
·
IF 7.7
Xueying Song,Xingyan Wei,Liu Liu,Yongfeng Liu
In this study, linalool-nanoparticles (L-NPs) were prepared (encapsulation efficiency was 68.54 %) and introduced pH-indicator film based on cranberry-extract (CEF) to develop multifunctional smart films. XRD analysis and FTIR spectroscopy indicated that cranberry-extract (CE) and L-NPs were uniformly distributed in the gelatin/agar matrix and could change the intermolecular structure of the film. Color change of smart films showed that CE endowed the film with pH-sensitive property. As CE and L-NPs were added to the film, the water contact angle (WCA) was increased from 57.03° to 117.73°, the elongation at break (EAB) was increased from 12.30 % to 34.60 %. Additionally, the introduction of L-NPs enhanced the antioxidant activity (DPPH free radical scavenging rate increased from 26.80 % to 36.35 %) and antibacterial activity (against S. aureus and E. coli ) of the smart film, which were verified by its retarding effect on pork spoilage.
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INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
·
2024
·
IF 5
Xueying Song,Jiamu Kang,Xingyan Wei,Liu Liu,Yongfeng Liu,Feng Wang
Shigella flexneri has the ability to contaminate pork and cause foodborne diseases. This study aimed to examine the effectiveness of linalool (a natural preservative) against S. flexneri and explore its potential application in contaminated pork. The results showed that linalool was capable of damaging the cell membrane and binding to the DNA of S. flexneri , and inhibiting biofilm formation and disrupting mature biofilms. The antibacterial effectiveness of linalool on the surface of pork was further demonstrated by analyzing the physicochemical properties of the pork ( i.e. , weight loss rate, pH value, color index, and TVB-N value) and its protein profiles. Linalool did not completely kill S. flexneri in pork at minimum bactericidal concentration (MBC) concentration and its antibacterial effect of linalool was stronger during the initial stage of storage. During storage, linalool influenced the abundance of specific proteins in the pork, particularly those involved in pathways related to fat metabolism. These findings offer novel insights into the antibacterial efficacy of linalool and its underlying mechanism in pork.
研究领域:
食品科学
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微生物学
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分子生物学
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高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Yangyang Xiao,Haibo Tan,Haitao Huang,Jizhong Yu,Lanting Zeng,Yinyin Liao,Ping Wu,Ziyin Yang
Linalool , which is one of the most representative aroma substances in tea, is transformed into other aroma-related compounds, including linalool 3,6-oxides and linalool 3,7-oxides. The objective of this study was to elucidate the linalool oxide synthesis pathway and its response to stress in tea. By feeding experiment, chemical synthesis, and compound analysis, it was found that linalool can be transformed to linalool oxides via 6,7-epoxylinalool. The conversion rate from 6,7-epoxylinalool to linalool oxides was relatively high under acidic conditions. Four linalool oxide glucosides obtained from tea were structurally characterized. Additionally, tea green leafhopper infestation was observed to activate the whole metabolic flow from linalool into linalool oxides and their glucosides ( p < 0.01). Moreover, light treatments further increased the accumulation of linalool oxides and their glucosides ( p < 0.05). These results will be useful for elucidating the mechanism mediating linalool oxides content changes in response to stress in tea.
研究领域:
植物科学
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农业化学
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生物化学
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2022
·Vol. 24
·期 1
·458
·
IF 6.208
Xiuming Li,Qifang Wang,Haosen Li,Xiaoyun Wang,Ruimin Zhang,Xiaoyu Yang,Qiwei Jiang,Qinghua Shi
Fusarium oxysporum f.sp.radicis-lycopersici(Forl) is a destructive soil-borne phytopathogenic fungus that causes Fusarium crown and root rot (FCRR) of tomato, leading to considerable field yield losses. In this study, we explored the antifungal capability of linalool, a natural plant volatile organic component, againstForland its role in controlling FCRR symptoms in tomatoes. Our results showed thatForlmycelial growth was inhibited by the linalool treatment and that the linalool treatment damaged cell membrane integrity, enhanced reactive oxygen species levels, depleted glutathione, and reduced the activities of many antioxidant enzymes inForl. Transcriptomic and proteomic analyses demonstrated that linalool also downregulated metabolic biosynthetic pathways at the transcript and protein levels, including redox, transporter activity, and carbohydrate metabolism inForl. Moreover, linalool significantly decreased the expression of manyForlpathogenic genes, such as cell wall degrading enzymes (CWDEs) and G proteins, which is likely how aForlinfection was prevented. Importantly, exogenously applied linalool activated the salicylic acid (SA) and jasmonic acid (JA) defensive pathways to improve disease resistance and relieved the negative effects ofForlon plant growth. Taken together, we report that linalool is an effective fungicide againstForland will be a promising green chemical agent for controlling FCRR.Keywords:volatile compounds;antifungal mechanism;Fusarium oxysporum f.sp.radicis-lycopersici;Fusarium crown and root rot;transcriptomic and proteomic
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
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植物化学
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JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMINANTS AND AGRICULTURAL WASTES
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2022
·
IF 2.506
Jun-yu Liang,Yue An,Zhi-bo Hou,Xu-dong Wang,Feng Zhou,Ji Zhang,Jun-long Wang
In order to find and develop new botanical pesticides against storage pests, components of the essential oil (EO) from Zanthoxylum bungeanum were identified by GC-MS and their insecticidal activity against the stored product pests were studied. The EO was obtained by steam distillation. Results showed that EO was rich in limonene (23.67), linalool (21.76) and linalyl anthranilate (10.87). In contact assays, linalool exhibited strongest toxicity to red flour beetle adult (LD50 = 17.06 μg/adult) and larvae (LD50 = 16.42 μg/larvae), and linalool was the most active one against the Lasioderma serricorne (LD50 = 15.36 μg/larvae). Then limonene and linalool showed different levels of fumigant activities against the two insect species. Synergism effect existed in the proportion of contact assays against Tribolium castaneum adults, and additive was observed in the proportion of 7:1 against T. castaneum larvae. This work provides important information for the development and utilization of Z. bungeanum and suggests that the EO of Z. bungeanum has the potential to serve as bio-insecticides for controlling pest damage in stored products.
研究领域:
植物学
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昆虫学
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农药科学
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Suqi Liu,Xiaowei Wu,Shihao Chen,Cong Liu,Wanqi Zhang,Mingyi Yang,Jiyu Cheng,Guoquan Lu,Zhenhe Wang,Wei Chen,Yuge Guan,Linjiang Pang,Xinghua Lu
Linalool, a terpenoid alcohol with bacteriostatic properties, was detected in sweetpotato suffering from black spot disease. In this research, a composite material based on HKUST-1/MWCNT-gel@MIP was employed to detect the linalool content in these infected sweetpotatoes. The micro-morphology and crystal structure of the composite were characterized using scanning electron microscopy (SEM), fourier transform infrared (FTIR), and x-ray diffraction (XRD). Experimental results demonstrated that the quartz crystal microbalance (QCM) gas sensor of HKUST-1/MWCNT-gel@MIP composite exhibited high sensitivity (0.873 Hz/ppm), a low detection limit (0.237 ppm), a small standard deviation (0.83 %), good reproducibility, and outstanding selectivity. The QCM gas sensor data from actual samples showed a strong correlation with gas chromatography-mass spectrometry (GC–MS) results (r = −0.976, p < 0.01), demonstrating its exceptional ability to identify linalool. Thus, it can be used for early detection of sweetpotato black spot disease.
研究领域:
植物病理学
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分析化学
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INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Chengshun Liu,Jianlong Li,Miao Wang,Guotai Jian,Chen Zhu,Hanxiang Li,Yongxia Jia,Jinchi Tang,Lanting Zeng
Camellia sinensis var. assamica is a major variety used to produce black tea. However, the core compounds influencing its aroma quality are unknown. In this study, Yinghong No. 9 black tea (YJBT), a distinctive black tea in South China, was analyzed. We detected 44 aroma compounds and identified seven key contributors, namely linalool, geraniol, trans -linalool oxide (furanoid), hexanal, methyl jasmonate, phenylacetaldehyde, and β-ionone. Linalool, which was generally more abundant in spring tea than in summer tea, contributed significantly to sweet and floral aromas. ( R )-Linalool was the primary linalool form in Yinghong No. 9, wherein it was highly abundant in high-quality tea leaves. The substantial expression of a linalool synthase gene and the relatively high catalytic efficiency of the encoded enzyme likely contributed to the accumulation of ( R )-linalool. This study identified the primary aroma compounds in YJBT, providing a foundation for advancing our knowledge of the aromatic quality of black tea.
研究领域:
植物学
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食品科学
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分子生物学
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FISH PHYSIOLOGY AND BIOCHEMISTRY
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2025
·Vol. 51
·期 3
·1-20
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IF 2.5
Cao Jie,Guo Meijie,Wang Jinfeng,Mei Jun,Xie Jing
Plant-based essential oils have been considered to be used as fish anesthetics and as suitable alternatives to synthetic anesthetics. In this study, we evaluated the effect of Cinnamomum camphora var. linaloofera Fujita essential oil (CFEO), MS-222 and linalool on anesthetic induction and recovery of spotted seabass, Lateolabrax maculatus , and verified their sedative effects during simulated transportation. A total of 198 live spotted seabass samples were subjected to various concentrations of MS-222, CFEO, and linalool: 10, 20, 30, 50, 100, 150, and 200 mg L −1 , individually, to evaluate the anesthetic induction time. MS-222, CFEO, and linalool all showed a deep sedation in spotted seabass at 20 mg L −1 . The minimum concentration required to achieve profound anesthesia in spotted seabass was found to be 50 mg L −1 MS-222, 100 mg L −1 CFEO, and 50 mg L −1 linalool, respectively. In addition, 120 healthy spotted seabass (400 g ± 3.5 g) were randomly divided into four groups, which were tranquilized by 20 mg L −1 CFEO, linalool, and MS-222, and the control fish were kept in clean seawater without anesthetics and essential oils. Then, the spotted seabass was simulated to be transported in a vibrating conveyor under 100 rpm at 12 °C for 24 h. The results showed that the fish transported with MS-222 and CFEO showed lower expressions in cytokine (tumor necrosis factor-α, interleukin-6, and interleukin-1 beta) compared to fish transported with linalool. Sedation with linalool reduced oxidative stress (higher superoxide dismutase, catalase, and glutathione peroxidase activities) in transport compared to the control but did not prevent changes in the activities of heat shock protein. In general, the efficacy of CFEO in anesthetizing and sedating spotted seabass and mitigating transport stress was as good as or better than that of MS-222, demonstrating it has the potential to be used as a new and natural sedation for spotted seabass during transport.
研究领域:
水产养殖学
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药理学
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环境生物学
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FOOD CHEMISTRY
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2022
·
IF 9.231
Linlin Li,Li Xia,Feng Xiao,Yewen Xiao,Lanhua Liu,Shaotong Jiang,Hualin Wang
Colorimetric active double-layer composites of [email protected] were developed via direct electrospinning functional nanofibers on colorimetric film. In the structure, oxidized sodium alginate cross-linked carboxymethyl chitosan (CO) was used as colorimetric film matrix to incorporate the anthocyanins extract from Oxalis triangularis ssp. papilionacea (OTA); while the blend of gelatin/zein (GZ) was used as fibrous matrix for linalool (L) encapsulation. Besides good barrier and water resistance, the outer-layer of CO-OTA showed colorimetric sensitivity towards pH-stimuli with reversible color changes. The inner-layer of GZ-L exhibited good antibacterial activities against Staphylococcus aureus and Escherichia coli . The volatile release of L from fibrous matrix was well controlled and mainly followed Fickian diffusion. Moreover, the antioxidant activity of the composites is source from the released linalool. The high reliability on milk freshness monitoring and double shelf-life extending at 25 °C suggest the potential of [email protected] in colorimetric active food packaging.
研究领域:
食品科学
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材料科学
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生物技术
·
化学
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2021
·
IF 4.952
Zefu Wang,Zhifei He,Dong Zhang,Xiaosi Chen,Hongjun Li
This study aimed to assess the protective effects of the main components of Zanthoxylum bungeanum Maxim. essential oil (ZBMEO) on the characteristics of rabbit meat myofibrillar protein (MP) under MDA (malondialdehyde) induced oxidation. The MP suspensions were mixed with various concentrations (5 mM, 25 mM and 50 mM) of linalool, limonene, sabinene under MDA-induced oxidation. The retained MDA contents were determined, and the thermal stability and structure of rabbit meat myofibrillar protein were analyzed. Linalool, limonene and sabinene can prevent MDA from binding to MP effectively. The addition of linalool, limonene and sabinene led to the increase in the sulfhydryl and free amine contents, and the decrease in the carbonyl content and surface hydrophobicity compared to control MP. Also, the addition had protective effects on maintaining the secondary structure and morphology of MP under MDA-induced oxidation. The Differential scanning calorimetry (DSC) and SDS-PAGE analysis indicated that linalool, limonene, sabinene had an obvious protective effect on MHC and actin. The above results suggest that linalool, limonene and sabinene could reduce the oxidative damage of MDA to MP, which might have the potential in protecting the structure and physicochemical properties of the protein in foods .
研究领域:
食品科学
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生物化学
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PLANT CELL AND ENVIRONMENT
·
2024
·Vol. 47
·期 3
·913-927
·
IF 6
Guanhua Liu,Qian Wang,Hui Chen,Yuxi Wang,Xiaogui Zhou,Demeng Bao,Nuo Wang,Juan Sun,Fuyin Huang,Mei Yang,Han Zhang,Peng Yan,Xin Li,Jiang Shi,Jianyu Fu
Insect-induced plant volatile organic compounds (VOCs) may function as either direct defence molecules to deter insects or indirect defence signals to attract the natural enemies of the invading insects. Tea ( Camellia sinensis L.), an important leaf-based beverage crop, is mainly infested by Ectropis obliqua which causes the most serious damage. Here, we report a mechanistic investigation of tea plant-derived VOCs in an indirect defence mechanism against E. obliqua . Parasitoid wasp Parapanteles hyposidrae , a natural enemy of E. obliqua , showed strong electrophysiological response and selection behaviour towards S -linalool and β-ocimene, two monoterpenes with elevated emission from E. obliqua -damaged tea plants. Larvae frass of E. obliqua , which also released S -linalool and β-ocimene, was found to attract both mated female or male Pa. hyposidrae according to gas chromatography-electroantennogram detection and Y-tube olfactometer assays. In a field setting, both S -linalool and β-ocimene were effective in recruiting both female and male Pa. hyposidrae wasps. To understand the molecular mechanism of monoterpenes-mediated indirect defence in tea plants, two novel monoterpene synthase genes, CsLIS and CsOCS-SCZ , involved in the biosynthesis of S -linalool or β-ocimene, respectively, were identified and biochemically characterised. When the expression of these two genes in tea plants was inhibited by antisense oligodeoxynucleotide, both volatile emission and attraction of wasps were reduced. Furthermore, gene expression analysis suggested that the expression of CsLIS and CsOCS-SCZ is regulated by the jasmonic acid signalling pathway in the tea plant.
研究领域:
植物学
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昆虫学
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分子生物学
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高影响因子
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