Recent Advances in Research on Lacquer Allergy

Ma, Xiaoming; Lü, Rong; Miyakoshi, Tetsuo

doi:10.2332/allergolint.11-ra-0324

Cited by 38 publications

(23 citation statements)

References 42 publications

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“…; Ma et al . ). The molecular structure of phenolic lipids usually shows interspecific variations in Anacardiaceae specially in the length (15 or 17 carbon atoms) and degree of saturation of the side‐chain joint to the aromatic moiety.…”

Section: Discussionmentioning

confidence: 97%

“…Toxicodendron succedaneum and Toxicodendron vernicifluum), American poisonous weeds (i.e. Toxicodendron radicans and Toxicodendron pubescens) and species including Semecarpus, Lithrea and Metopium genera (Rivero Cruz et al 1997;Mohan et al 2006;Zhao et al 2009;Urzua et al 2011;Ma et al 2012). The molecular structure of phenolic lipids usually shows interspecific variations in Anacardiaceae specially in the length (15 or 17 carbon atoms) and degree of saturation of the side-chain joint to the aromatic moiety.…”

Section: Discussionmentioning

confidence: 99%

“…; Ma et al . ). Retention index of each identified compound was calculated in relation to n‐alkanes (Kovats ).…”

Section: Methodsmentioning

confidence: 97%

“…Helium was used as mobile phase at a flow of 1 ml min À1 ; split: 80 : 1; interface temperature 280°C; ion source temperature: 230°C; temperature of the mass detector (quadrupole): 150°C; injector temperature: 250°C; injection volume: 1 ll; temperature program: 170°C (0 min), 170-320°C (ramp 5°C min À1 ), 320°C (10 min). The constituents of each fraction were identified by matching of their mass spectra fragmentation patterns with those stored in the Wiley/NIST database and also with published data (Zhao et al 2009;Ma et al 2012). Retention index of each identified compound was calculated in relation to n-alkanes (Kovats 1965).…”

Section: Separation Of the Antifungal Compounds From The Methanolic Fmentioning

confidence: 99%

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Antifungal and antimycotoxigenic metabolites in Anacardiaceae species from northwest Argentina: isolation, identification and potential for control of Fusarium species

et al. 2014

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Aims: The purpose of this research was to identify antifungal compounds from leaves of Schinus and Schinopsis species useful for the control of toxigenic Fusarium species responsible of ear rot diseases. Methods and Results: Leaves of Schinopsis (S. lorentzii and S. haenkeana) and Schinus (S. areira, S. gracilipes and S. fasciculatus) were sequentially extracted with dichloromethane, ethyl acetate and methanol. The antifungal activity of the fraction soluble in methanol of these extracts (fCH 2 Cl 2 , fAcEt and fMeOH, respectively) was determined by the broth microdilution method and the discdiffusion method. The minimum inhibitory dose (MID), the diameter of growth inhibition (DGI) and the minimum concentration for 50% inhibition of fungal growth (MIC 50 ) were calculated. The fCH 2 Cl 2 and fAcEt of the Schinopsis species had the lowest MID and MIC 50 values and the highest DGI. The antifungal compounds were identified as lupeol and a mix of phenolic lipids. The last one had the highest antifungal activity with MIC 50 31-28 lg g À1 and 165-150 lg g À1 on Fusarium graminearum and Fusarium verticillioides, respectively. The identified metabolites completely inhibited fumonisin and deoxynivalenol production at lower concentrations than ferulic acid, a natural antimycotoxigenic compound. Conclusions: It was proven that lupeol and phenolic lipids were inhibitors of both fungal growth and mycotoxin production of toxigenic Fusarium species. This fact is specially interesting in the control of the toxigenic Fusarium species because several commercial antifungals showed to stimulate mycotoxin biosynthesis at sublethal concentrations. Significance and Impact of the Study: Control of toxigenic Fusarium species requires compounds able to inhibit both fungal growth and mycotoxin production. Our results suggest that the use of lupeol as food preservative and the phenolic lipids as fungal growth inhibitors of F. verticillioides and F. graminearum did not imply an increase in mycotoxin accumulation.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

“…; Ma et al . ). Retention index of each identified compound was calculated in relation to n‐alkanes (Kovats ).…”

Section: Methodsmentioning

confidence: 97%

Section: Separation Of the Antifungal Compounds From The Methanolic Fmentioning

confidence: 99%

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Antifungal and antimycotoxigenic metabolites in Anacardiaceae species from northwest Argentina: isolation, identification and potential for control of Fusarium species

et al. 2014

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“…However, the urushiols have the fatal defect of inducing strong allergic reactions such as skin redness, swelling, inflammation, and irritation on contact. 12,13) In the previous study, we chemically synthesized catechol (CTUD, 1-6)-type urushiol derivatives possessing different carbon atomic length in the alkyl side chain. 14) Some of the synthesized urushiol derivatives did not induce contact hypersensitivity, whereas 3-decylcatechol (4) and 3-pentyldecylcatechol (6) consisting of -C 10 H 21 and -C 15 H 31 in the alkyl side chains ( Fig.…”

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confidence: 99%

Antimicrobial activity of the synthesized non-allergenic urushiol derivatives

Cho

Park

Kim

et al. 2015

Bioscience, Biotechnology, and Biochemistry

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Synthesized urushiol derivatives possessing different carbon atomic length in the alkyl side chain inhibited the growth of food spoilage and pathogenic microorganisms. Particularly, non-allergenic 3-pentylcatechol showed a broad antimicrobial spectrum on an agar plate. Most food spoilage and pathogenic microorganisms were sensitive to urushiol derivatives in the liquid culture. The morphologies of the microorganisms were changed after treatment of 3-pentylcatechol.

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Research Progress on Modification and Application of Raw Lacquer

Fang

2022

ChemistrySelect

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Raw lacquer is a kind of natural polymer coating with excellent performance. The lacquer film formed after drying of pure natural raw lacquer has the advantages of hard quality, heat resistance and corrosion resistance. However, natural raw lacquer also has some disadvantages. For example, it must be dried at a specific temperature and humidity to form a film, difficult to spray, dark color, poor alkali resistance, easy to cause human skin allergy and so on. Due to urushiol is the main film‐forming material in raw lacquer, its performance and drying film‐forming process will directly affect the properties of the lacquer film. Taking advantage of the particularity of its structure, urushiol can be modified in its drying film‐forming process, so as to speed up its drying film‐forming process or obtain a modified lacquer film with excellent performance. Thus, the research on raw lacquer and its modification mainly focuses on the modification of urushiol, the main film‐forming substance of the raw lacquer. This paper reviews the modification and combined methods of the natural urushiol by researchers in recent years, mainly including urushiol polymerization catalyzed by proton acid, urushiol polymerization initiated by UV irradiation, copolymerized with other polymer materials, reacted with metal compounds to form urushiol metal polymers, and formed composite coatings with multi‐wall carbon nanotubes, graphene oxide, nano‐TiO2 and so on. The modified lacquer has shown excellent performance in some aspects, such as the gloss and hardness of the lacquer film have been significantly improved, the heat resistance, acid and alkali resistance have been enhanced, the ageing resistance and solvent resistance have been improved, the impact strength and toughness have been enhanced, the curing time of the lacquer film has been greatly shortened and so on. Then the application fields and development trends of the modified raw lacquer are discussed, hoping to provide a theoretical basis for the further development and utilization of raw lacquer.

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Recent Advances in Research on Lacquer Allergy

Cited by 38 publications

References 42 publications

Antifungal and antimycotoxigenic metabolites in Anacardiaceae species from northwest Argentina: isolation, identification and potential for control of Fusarium species

Antifungal and antimycotoxigenic metabolites in Anacardiaceae species from northwest Argentina: isolation, identification and potential for control of Fusarium species

Antimicrobial activity of the synthesized non-allergenic urushiol derivatives

Research Progress on Modification and Application of Raw Lacquer

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