Masakazu Osakada
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Explore the profile of Masakazu Osakada including associated specialties, affiliations and a list of published articles.
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22
Citations
88
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Recent Articles
1.
Yoshimitsu M, Uchida K, Osakada M, Matsui H, Ueno R, Fujiwara T, et al.
Shokuhin Eiseigaku Zasshi
. 2022 Mar;
63(1):43-46.
PMID: 35264521
As an analytical method for aflatoxins in foods, the analytical method based on the notification by the director of the Food Safety Department, Pharmaceutical and Food Safety Bureau, Ministry of...
2.
Yoshimitsu M, Ueno R, Matsui H, Osakada M, Uchida K, Fukui N, et al.
Shokuhin Eiseigaku Zasshi
. 2020 Oct;
61(4):143-147.
PMID: 33012769
In this study, we developed an LC-MS/MS-based rapid and simple analytical method for six fungicides; imazalil, o-phenylphenol, thiabendazole, fludioxonil, azoxystrobin and pyrimethanil, the latter three were newly approved for use...
3.
Yoshimitsu M, Akutsu K, Kitagawa Y, Takatori S, Fukui N, Osakada M, et al.
Shokuhin Eiseigaku Zasshi
. 2018 Jul;
59(3):146-150.
PMID: 30033992
We carried out a collaborative study in six laboratories to confirm the universality of the enhancing effect of co-existing reference pesticides on the GC-MS peak response to a target pesticide...
4.
Akutsu K, Kitagawa Y, Yoshimitsu M, Takatori S, Fukui N, Osakada M, et al.
Anal Bioanal Chem
. 2018 Mar;
410(13):3145-3160.
PMID: 29556739
Polyethylene glycol 300 is commonly used as a base material for "analyte protection" in multiresidue pesticide analysis via gas chromatography-mass spectrometry. However, the disadvantage of the co-injection method using polyethylene...
5.
Akutsu K, Yoshimitsu M, Kitagawa Y, Takatori S, Fukui N, Osakada M, et al.
J Sep Sci
. 2017 Jan;
40(6):1293-1300.
PMID: 28106327
In multiresidue pesticide analysis using gas chromatography, it has long been recognized that an increase in the number of pesticides present in a standard solution can result in an enhancement...
6.
Fukui N, Takatori S, Yamaguchi S, Kitagawa Y, Yoshimitsu M, Osakada M, et al.
Shokuhin Eiseigaku Zasshi
. 2015 Sep;
56(4):178-84.
PMID: 26346863
Quantitative methods using the matrix-matched standard solutions approach are widely used for multi-residue pesticide determination by GC-MS/MS to deal with the issue of matrix effects. However, preparing matrix-matched standard solutions...
7.
Takatori S, Yamamoto H, Fukui N, Yamaguchi S, Kitagawa Y, Kakimoto Y, et al.
Shokuhin Eiseigaku Zasshi
. 2013 Jul;
54(3):237-49.
PMID: 23863370
A validation study was conducted on a rapid multiresidue method for determination of pesticide residues in vegetables and fruits by LC-MS/MS. Pesticide residues in the vegetables or fruits were extracted...
8.
Fukui N, Takatori S, Kitagawa Y, Okihashi M, Osakada M, Nakatsuji N, et al.
Shokuhin Eiseigaku Zasshi
. 2012 Nov;
53(4):183-93.
PMID: 23132358
A rapid and simple multi-residue method for determination of pesticides has been applied to drinking water and beverages. To a disposable polypropylene tube containing 10.0 g sample, 20 mL acetonitrile...
9.
Okihashi M, Osakada M, Uchida K, Nagayoshi H, Yamaguchi T, Kakimoto K, et al.
Shokuhin Eiseigaku Zasshi
. 2010 Nov;
51(5):253-7.
PMID: 21071910
To conduct proficiency testing for the analysis of pesticide residues in processed foods, fortified samples of retort curry and pancake were examined. In the case of retort curry, heating and...
10.
Fujita M, Kakimoto K, Nagayoshi H, Konishi Y, Uchida K, Osakada M, et al.
Shokuhin Eiseigaku Zasshi
. 2009 Jul;
50(3):131-4.
PMID: 19602860
A method using liquid chromatograph coupled with tandem mass spectrometer (LC/MS/MS) was developed for the determination of melamine in processed food. After extraction with 50% acetonitrile and clean-up with PSA...