Determination of Methyl Isothiocyanate in Wine by GC and GC/MS

Uchiyama, Sadao; Takeda, Hisashi; Kobayashi, Akihiko; Ito, Sumio; Sakurai, Haruaki; Tada, Yoshihiko; Aoki, Gaku; Hosogai, Takashi; Yamanaka, Takaaki; Maekawa, Yoshiaki; Yoshikawa, Reiji; Itô, Kazuo; Saitō, Yukio

doi:10.3358/shokueishi.33.603

Cited by 7 publications

(3 citation statements)

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“…The method to evaluate the release of the compounds from the MSNPs was adapted from Uchiyama et al [20]: ethyl acetate (EtOAc) was used as an organic solvent to extract AIT and CNAD from PBS solution and at each sampling time point, 550 ml MSNP suspension was transferred into a microfuge tube and centrifuged at 13 000 r.p.m. for 2 min.…”

Section: Gc-fid and Liquid Chromatographymentioning

confidence: 99%

Effective delivery of volatile biocides employing mesoporous silicates for treating biofilms

Chan

Cadena

Townley

et al. 2017

J. R. Soc. Interface.

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Nanoparticulate delivery of biocides has the potential to decrease levels of exposure to non-target organisms, and miminize long-term exposure that can promote the development of resistance. Silica nanoparticles are an ideal vehicle since they are inert, biocompatible, biodegradable, and thermally and chemically stable. Encapsulation of biocides within nanoparticulates can improve their stability and longevity and maximize the biocidal potential of hydrophobic volatile compounds. Herein, we have shown that the plant secondary metabolites allyl isothiocyanate and cinnamaldehyde demonstrated increased antimicrobial activity against Escherichia coli in planktonic form, when packaged into mesoporous silica nanoparticles. Furthermore, the biocide-loaded nanoparticles showed activity against Pseudomonas aeruginosa biofilms that have inherent resistance to antimicrobial agents. The delivery platform can also be expanded to traditional biocides and other non-conventional antimicrobial agents.

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Section: Gc-fid and Liquid Chromatographymentioning

confidence: 99%

Effective delivery of volatile biocides employing mesoporous silicates for treating biofilms

Chan

Cadena

Townley

et al. 2017

J. R. Soc. Interface.

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“…The concentrations, at which CP and MITC were tested, were significantly higher than the 0.1 ppm (8.5 g/85 mL in a petri dish) currently used in the industry. CP causes symptoms of poisoning (Kawai, 1973) and MITC is an irritant to the skin and mucous membranes (Uchiyama et al, 1992). Because equivalent results were obtained using lower levels of TLV, use of TLV as an alternative fumigant to CP and MITC should be considered.…”

Section: Discussionmentioning

confidence: 99%

Application of Tomato (Solanum lycopersicum) Leaf Volatiles as Antifungal Agents against Plant Pathogenic Fungi

Kobayashi

Ishida²,

Ikeura

et al. 2012

JAS

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The antifungal activity of tomato (Solanum lycopersicum) leaf volatiles (TLV), which are industrial residues, was investigated against three types of plant pathogenic fungi of Botryotinis fuckeliana, Glomerella cingulata and Fusarium oxysporum f. sp. melonis. The growth of B. fuckeliana and G. cingulata was completely inhibited by TLV extract volumes corresponding to 12 and 17 g of tomato leaves, respectively. The inhibition rate of a TLV extract volume corresponding to 17 g of tomato leaves against F. oxysporum f. sp. melonis was approximately 55%. The antifungal activity of TLV was thus shown to vary according to the type of plant pathogenic fungi. These results suggest the presence of a defense response against plant pathogenic fungi in tomato plants and that TLV are efficacious as a biological control agent.

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“…Uchiyama et al performed a method for determination of methyl isothiocyanate in wine by extraction with ethyl acetate and GC/MS analysis (Uchiyama et al, 1992). Recoveries from spiked samples ranged between 83% and 90% in white wine, and 75% and 82% in red wine, and 0.05 mg/L LOD was obtained.…”

Section: Grape and Wine Chemistrymentioning

confidence: 99%

Mass spectrometry in grape and wine chemistry. Part II: The consumer protection

Flamini

Panighel

2006

Mass Spectrometry Reviews

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Controls in food industry are fundamental to protect the consumer health. For products of high quality, warranty of origin and identity is required and analytical control is very important to prevent frauds. In this article, the “state of art” of mass spectrometry in enological chemistry as a consumer safety contribute is reported. Gas chromatography‐mass spectrometry (GC/MS) and liquid‐chromatography‐mass spectrometry (LC/MS) methods have been developed to determine pesticides, ethyl carbamate, and compounds from the yeast and bacterial metabolism in wine. The presence of pesticides in wine is mainly linked to the use of dicarboxyimide fungicides on vineyard shortly before the harvest to prevent the Botrytis cinerea attack of grape. Pesticide residues are regulated at maximum residue limits in grape of low ppm levels, but significantly lower levels in wine have to be detected, and mass spectrometry offers effective and sensitive methods. Moreover, mass spectrometry represent an advantageous alternative to the radioactive‐source‐containing electron capture detector commonly used in GC analysis of pesticides. Analysis of ochratoxin A (OTA) in wine by LC/MS and multiple mass spectrometry (MS/MS) permits to confirm the toxin presence without the use of expensive immunoaffinity columns, or time and solvent consuming sample derivatization procedures. Inductively coupled plasma‐mass spectrometry (ICP/MS) is used to control heavy metals contamination in wine, and to verify the wine origin and authenticity. Isotopic ratio‐mass spectrometry (IRMS) is applied to reveal wine watering and sugar additions, and to determine the product origin and traceability. © 2006 Wiley Periodicals, Inc.

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Determination of Methyl Isothiocyanate in Wine by GC and GC/MS

Cited by 7 publications

References 0 publications

Effective delivery of volatile biocides employing mesoporous silicates for treating biofilms

Effective delivery of volatile biocides employing mesoporous silicates for treating biofilms

Application of Tomato (Solanum lycopersicum) Leaf Volatiles as Antifungal Agents against Plant Pathogenic Fungi

Mass spectrometry in grape and wine chemistry. Part II: The consumer protection

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