Food Hygiene and Safety Science最新文献

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[Prevalence and Antimicrobial Resistance of Campylobacter jejuni/coli and Analysis of Macrolide Resistance Isolates from Retail Meat in Tokyo, Japan (2010-2019)]. [日本东京市(2010-2019年)空肠弯曲杆菌/大肠杆菌的流行率和耐药性以及零售肉类中大环内酯类耐药性分离株的分析]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.185
Yukari Nishino, Yukako Shimojima, Rie Fukui, Sumiyo Kuroda, Kaeko Yamazaki, Kaoru Hatakeyama, Keiko Yokoyama, Kenji Sadamasu
{"title":"[Prevalence and Antimicrobial Resistance of Campylobacter jejuni/coli and Analysis of Macrolide Resistance Isolates from Retail Meat in Tokyo, Japan (2010-2019)].","authors":"Yukari Nishino,&nbsp;Yukako Shimojima,&nbsp;Rie Fukui,&nbsp;Sumiyo Kuroda,&nbsp;Kaeko Yamazaki,&nbsp;Kaoru Hatakeyama,&nbsp;Keiko Yokoyama,&nbsp;Kenji Sadamasu","doi":"10.3358/shokueishi.64.185","DOIUrl":"10.3358/shokueishi.64.185","url":null,"abstract":"<p><p>This study aimed to investigate the prevalence and antimicrobial sensitivity of Campylobacter jejuni and Campylobacter coli in retail meat (chicken, beef, pork, venison, wild boar, horse, lamb and mutton) in Tokyo (Japan) from 2010 to 2019. Furthermore, the resistance mechanism of erythromycin (EM)-resistant strains was analysed. C. jejuni had a highly positive rate in domestic chicken meat (53.4%, 334/626 samples), domestic chicken offal (49.3%, 34/69 samples), and domestic beef offal (28.3%, 47/166 samples), while C. coli had a high positivity rate in domestic pork offal (31.7%, 44/139 samples). The positive rate of C. jejuni was significantly higher in offal than that in meat in domestic beef, while the positive rate of C. coli was significantly higher in offal than that in meat in domestic beef and domestic pork (p<0.05). In the isolates, 1.0% (6/631 strains) of C. jejuni and 36.2% (55/152 strains) of C. coli were EM resistant, with 41.5% (262/631 strains) of C. jejuni and 65.1% (99/152 strains) of C. coli being ciprofloxacin resistant. A2075G mutation of the 23S rRNA gene was confirmed in all EM-resistant strains.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 5","pages":"185-190"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50163710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Analysis of Maximum Growth Rate and Construction of Predictive Growth Model for Bacillus cereusin Mashed Potato by Calorimetric Method]. [热量测定法分析蜡样芽孢杆菌马铃薯泥的最大生长率并构建预测生长模型]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.200
Rie Togawa, Satomi Kanagawa, Saya Fukumoto, Fia Noviyanti, Yukie Hosotani, Daisuke Koizumi, Keishi Iohara, Jun Shimodaira, Susumu Kawasaki
{"title":"[Analysis of Maximum Growth Rate and Construction of Predictive Growth Model for Bacillus cereusin Mashed Potato by Calorimetric Method].","authors":"Rie Togawa, Satomi Kanagawa, Saya Fukumoto, Fia Noviyanti, Yukie Hosotani, Daisuke Koizumi, Keishi Iohara, Jun Shimodaira, Susumu Kawasaki","doi":"10.3358/shokueishi.64.200","DOIUrl":"10.3358/shokueishi.64.200","url":null,"abstract":"<p><p>The maximum growth rate (μ<sub>max</sub>) of Bacillus cereus was estimated using a non-destructive isothermal calorimetric method, and a growth prediction model was constructed based on the measurement results. SCD medium and mashed potato were inoculated with serial-diluted inoculum of B. cereus. Heat generation curves were determined using an isothermal calorimeter at 35, 25, and 15℃. The μ<sub>max</sub> was determined from the relationship between the increase in B. cereus cell number and incubation time, which was detected through the heat generation of the B. cereus biological process. Moreover, the growth prediction model was constructed using Ratkowsky's square-root model. The results of the growth prediction model based on the data of the calorimetric and conventional culture methods for SCD were expressed as √μ<sup>Cal</sup><sub>max</sub>=0.0354 (T-4.9)[R<sup>2</sup>=0.99] and √μ<sup>CCM</sup><sub>max</sub>=0.0335 (T-5.0)[R<sup>2</sup>=0.99]; a similar equation was provided by both methods. Conversely, the results of the growth prediction model based on the calorimetric method data for mashed potato were given as √μ<sup>Cal</sup><sub>max</sub>=0.0390 (T-8.5)[R<sup>2</sup>=0.99]; the maximum growth rates at 30 and 20℃ were predicted as 0.70 and 0.20 (1/hr), respectively. The maximum growth rates obtained using the conventional culture method were 0.63 and 0.29 (1/hr), respectively, similar to the calorimetric method results. The predictive microbiological analysis using the calorimetric method enabled the rapid provision of a growth prediction equation, and the number of samples could be substantially reduced compared with that for the conventional culture method.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 6","pages":"200-205"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139089372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Development for the Simultaneous Analytical Method of Furan and Alkyl Furans in Processed Foods]. 加工食品中呋喃和烷基呋喃同时分析方法的研究进展
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.29
Motoki Ogiso, Chihiro Hashimoto, Eisuke Toriumi, Kanako Nishimura, Seiichiro Iizuka, Kazuhiro Sakamoto, Yushi Yamamoto, Yukiko Yamada
{"title":"[Development for the Simultaneous Analytical Method of Furan and Alkyl Furans in Processed Foods].","authors":"Motoki Ogiso,&nbsp;Chihiro Hashimoto,&nbsp;Eisuke Toriumi,&nbsp;Kanako Nishimura,&nbsp;Seiichiro Iizuka,&nbsp;Kazuhiro Sakamoto,&nbsp;Yushi Yamamoto,&nbsp;Yukiko Yamada","doi":"10.3358/shokueishi.64.29","DOIUrl":"https://doi.org/10.3358/shokueishi.64.29","url":null,"abstract":"<p><p>A simultaneous analytical method was developed for the determination of alkyl furans (Furan, 2-methylfuran, 3-methylfuran and 2,5-dimethylfuran) in processed foods by headspace-GC-MS. Single-laboratory validation data of furan, 2-methylfuran, 3-methylfuran and 2,5-dimethylfuran showed good precision and accuracy. The mean recoveries ranged from 92 to 116%, the intermediate precision (RSDi) ranged from 0.9 to 12.9%. The level of LOQ ranged from 0.5 to 1.2 μg/kg (coffee), from 3.5 to 4.1 μg/kg (soy sauce), from 0.4 to 1.3 μg/kg (other foods: clear apple juice, infant formula and baby food), respectively. This method has the sensitivity to detect low levels of furan and alkyl furans contaminated in various foods and is thus applicable to surveillance for risk management in food safety.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 1","pages":"29-33"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10823512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Proposal for Guidelines on the Notation and Investigation of Scientific Names for the Source of Natural Food Additives in Japanese Standards]. [关于日本标准中天然食品添加剂来源的科学名称标注和调查指南的建议]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.78
Naoko Masumoto, Naoki Sugimoto, Kyoko Sato
{"title":"[Proposal for Guidelines on the Notation and Investigation of Scientific Names for the Source of Natural Food Additives in Japanese Standards].","authors":"Naoko Masumoto,&nbsp;Naoki Sugimoto,&nbsp;Kyoko Sato","doi":"10.3358/shokueishi.64.78","DOIUrl":"https://doi.org/10.3358/shokueishi.64.78","url":null,"abstract":"<p><p>The official specifications for food additives from natural sources list the species according to their scientific and Japanese names, thereby providing a unique identifier for the species. This helps to prevent the use of nonprescribed species, which might cause unexpected or unintended health hazards. However, there are cases in which the names of the source species listed in the official specifications differ from the accepted scientific names based on the latest taxonomic research. In this paper, we argue that it is more important to define scientific and Japanese names with an emphasis on traceability in order to control the range of food additive ingredients in a rational and sustainable manner. Therefore, we proposed a method for ensuring traceability as well as a specific notation procedure for scientific and Japanese names. Using this method, we examined the source species for three food additives. In some cases, the range of sources species expanded with the change in scientific names. Ensuring traceability is extremely important, but it is also necessary to confirm whether unexpected species are included when names are changed.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 2","pages":"78-88"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9503176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Study on Migrants Found in Migration Solutions from Commercially Available Polyethylene Products]. [对市售聚乙烯产品迁移溶液中发现的迁移物的研究]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.101
Keiko Iwakoshi, Katsushi Iwakoshi, Megumi Hasebe, Asa Osuga, Hiroyuki Miyakawa, Motoh Mutsuga, Chigusa Kobayashi
{"title":"[Study on Migrants Found in Migration Solutions from Commercially Available Polyethylene Products].","authors":"Keiko Iwakoshi,&nbsp;Katsushi Iwakoshi,&nbsp;Megumi Hasebe,&nbsp;Asa Osuga,&nbsp;Hiroyuki Miyakawa,&nbsp;Motoh Mutsuga,&nbsp;Chigusa Kobayashi","doi":"10.3358/shokueishi.64.101","DOIUrl":"https://doi.org/10.3358/shokueishi.64.101","url":null,"abstract":"<p><p>Migrants found in migration solutions obtained from commercially available polyethylene products that may contain food were studied and analysed via liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (LC-QTOF) for non-target screening and LC-MS/MS for quantifying 14 substances in migration solutions. Furthermore, an analytical approach based on the retention gap was developed for accurate separation techniques using LC-MS/MS. Irganox 1076 was detected at a maximum of 1.5 mg/kg, which was 1/4 of the Specific Migration Limit in the EU, in nine commercially available plastic bags tested. This is in accordance with European Regulation No 10/2011/EU. Furthermore, migration of Erucamide and Irgafos 168-oxide was confirmed.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 3","pages":"101-107"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9751698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Investigation of Genetically Modified Maize Imported into Japan in 2021/2022 and the Applicability of Japanese Official Methods]. [2021/2022 年日本进口转基因玉米的调查和日本官方方法的适用性]。
IF 0.2 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.218
Keisuke Soga, Chie Taguchi, Miyu Sugino, Tomohiro Egi, Jumpei Narushima, Satoko Yoshiba, Reona Takabatake, Kazunari Kondo, Norihito Shibata
{"title":"[Investigation of Genetically Modified Maize Imported into Japan in 2021/2022 and the Applicability of Japanese Official Methods].","authors":"Keisuke Soga, Chie Taguchi, Miyu Sugino, Tomohiro Egi, Jumpei Narushima, Satoko Yoshiba, Reona Takabatake, Kazunari Kondo, Norihito Shibata","doi":"10.3358/shokueishi.64.218","DOIUrl":"10.3358/shokueishi.64.218","url":null,"abstract":"<p><p>Given that the number of genetically modified (GM) maize events that have been announced as having undergone safety assessment procedures in Japan is increasing yearly, more information is needed about their actual recent domestic distribution in Japan. In this study, we investigated whether current Japanese official qualitative and quantitative methods (the current official methods) for GM maize can comprehensively target events in domestically distributed maize. For samples with the identity-preserved (IP) handling system and non-IP samples from the United States (US) and non-IP samples from Brazil, we performed event-specific real-time PCR targeting 25 authorized single GM maize events in addition to the current official methods. According to our results, 15 events targeted by the current official methods were detected, but insect-resistance (IR) Event5307 and herbicide-tolerant (HT) DAS40278, not targeted by the current official methods, were detected in the US (one out of 5 lots) and Brazilian (four out of 5 lots) non-IP samples, respectively. Nevertheless, a survey of recent GM maize acreage in recent years has revealed that more than 95% of the acreage in US maize is occupied by HT or IR/HT stacked events, and that more than 95% of the acreage in Brazilian maize is occupied by IR or IR/HT stacked events. Because the current official methods can target all stacked events related to Event5307 and DAS40278, the only undetectable events are the single Event5307 and DAS40278, whose production is estimated to be less than 5% of the total production in the producing country. Therefore, we conclude that the current official methods for the labelling of GM maize should be maintained in view of practicability.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 6","pages":"218-225"},"PeriodicalIF":0.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139089375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Simultaneous Determination of Pesticide Residues in Brown Rice Using GC-MS/MS and LC-MS/MS]. [利用 GC-MS/MS 和 LC-MS/MS 同时测定糙米中的农药残留量]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.246
Yoshie Kokaji, Sanae Tomizawa, Kyoko Kamijo, Takayuki Nakajima, Kazuoki Yamamoto, Yuri Saito, Tomomi Takada, Hiroko Shiradoh, Yoshihiro Ohsawa, Ayane Oyama, Maiko Noguchi, Tomoko Yokoyama, Takeo Sasamoto
{"title":"[Simultaneous Determination of Pesticide Residues in Brown Rice Using GC-MS/MS and LC-MS/MS].","authors":"Yoshie Kokaji, Sanae Tomizawa, Kyoko Kamijo, Takayuki Nakajima, Kazuoki Yamamoto, Yuri Saito, Tomomi Takada, Hiroko Shiradoh, Yoshihiro Ohsawa, Ayane Oyama, Maiko Noguchi, Tomoko Yokoyama, Takeo Sasamoto","doi":"10.3358/shokueishi.64.246","DOIUrl":"10.3358/shokueishi.64.246","url":null,"abstract":"<p><p>This study developed a method that simultaneously detected 283 pesticide residues in brown rice using GC-MS/MS and LC-MS/MS. In this method, we examined the desirable amount of sodium chloride required for salting out and the SPE cartridge required for clean-up. Pesticide residues from the sample were extracted with acetonitrile using a homogenizer and mixed with salts including anhydrous magnesium, two types of citrate, and sodium chloride. The sample solution of the acetonitrile layer was cleaned up using the GCB/NH<sub>2</sub> (200 mg/200 mg, 6 mL) SPE cartridge. The determination method was validated using two concentrations (0.01 and 0.1 μg/g) of 283 pesticides based on the validation guideline of the Ministry of Health, Labor and Welfare in Japan. Of the 283 pesticides, 250 were detected satisfactorily. In addition, 59 brown rice samples sold in Tokyo were surveyed using the same method. Out of 44 samples, 12 pesticide residues below MRLs were detected. Therefore, this developed method is useful for the simultaneous determination of pesticide residues in brown rice.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 6","pages":"246-252"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139089378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Prevalence and Characteristics of Campylobacter and Salmonella in Meat Derived from Spent Hens]. [鸡废肉中弯曲杆菌和沙门氏菌的流行及特征]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.117
Yoshimasa Sasaki, Kenzo Yonemitsu, Yoshika Momose, Masashi Uema
{"title":"[Prevalence and Characteristics of Campylobacter and Salmonella in Meat Derived from Spent Hens].","authors":"Yoshimasa Sasaki,&nbsp;Kenzo Yonemitsu,&nbsp;Yoshika Momose,&nbsp;Masashi Uema","doi":"10.3358/shokueishi.64.117","DOIUrl":"https://doi.org/10.3358/shokueishi.64.117","url":null,"abstract":"<p><p>Meat derived from spent hens as well as broilers is destined for human consumption. There are many reports on the prevalence and antimicrobial resistance of Campylobacter and Salmonella in broiler meat, but few in spent hen meat. Therefore, we investigated the prevalence and antimicrobial resistance of these genera in spent hen meat collected at chicken processing plants. Campylobacter and Salmonella were isolated from 47 (92.2%) and 18 (35.5%), respectively, of breast meat derived from 51 spent hen flocks. Campylobacter jejuni accounted for 87.5% of Campylobacter isolates. The highest resistant rate in C. jejuni isolates was found for ampicillin (45.3%), followed by tetracycline (14.3%) and ciprofloxacin (14.3%). There was no Campylobacter isolate resistant to erythromycin, which is recommended as a first-choice antimicrobial for humans when Campylobacter enteritis is strongly suspected. Of Salmonella isolates, the first and second most frequent serovars were Salmonella Corvallis (30.4%) and S. Braenderup (21.7%), respectively. Of Salmonella isolates, 30.4% were resistant to streptomycin. There was no Salmonella isolate resistant to ciprofloxacin, which is one of the recommended antimicrobials for humans against Salmonella enteritis. This study shows that one third of spent hen meat is contaminated with Campylobacter or Salmonella, and administration of erythromycin or cefotaxime is an effective option for patients with Campylobacter- or Salmonella- enteritis, respectively, caused by consumption of spent hen meat.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 4","pages":"117-122"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10180843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Inter-laboratory Study on the Modified Methods for Analyzing Bisphenol A Content for Migration Tests from Polycarbonate Food Apparatuses, Containers, and Packaging]. [聚碳酸酯食品器具、容器和包装迁移试验中双酚A含量分析改进方法的实验室间研究]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.154
Yohei Kataoka, Motoh Mutsug, Tomoyuki Abe, Yutaka Abe, Atsuko Ushiyama, Yosuke Uchiyama, Hiroyuki Ohno, Kimiyasu Ohashi, Takamitsu Kazama, Arisa Kimura, Yasushi Kobayashi, Midori Kondo, Tamaki Sato, Shunsuke Zama, Yoshiyuki Takahashi, Arisa Takezawa, Aoi Tanaka, Yoshimitsu Terui, Shinichiro Nagai, Chie Nomura, Kotaro Hanazawa, Masato Hayakawa, Naoyuki Hirabayashi, Tomoharu Fujiyoshi, Saki Hotta, Hiroyuki Miyakawa, Yuko Murayama, Michiyo Yotsuyanagi, Kazunari Watanabe, Kyoko Sato
{"title":"[Inter-laboratory Study on the Modified Methods for Analyzing Bisphenol A Content for Migration Tests from Polycarbonate Food Apparatuses, Containers, and Packaging].","authors":"Yohei Kataoka,&nbsp;Motoh Mutsug,&nbsp;Tomoyuki Abe,&nbsp;Yutaka Abe,&nbsp;Atsuko Ushiyama,&nbsp;Yosuke Uchiyama,&nbsp;Hiroyuki Ohno,&nbsp;Kimiyasu Ohashi,&nbsp;Takamitsu Kazama,&nbsp;Arisa Kimura,&nbsp;Yasushi Kobayashi,&nbsp;Midori Kondo,&nbsp;Tamaki Sato,&nbsp;Shunsuke Zama,&nbsp;Yoshiyuki Takahashi,&nbsp;Arisa Takezawa,&nbsp;Aoi Tanaka,&nbsp;Yoshimitsu Terui,&nbsp;Shinichiro Nagai,&nbsp;Chie Nomura,&nbsp;Kotaro Hanazawa,&nbsp;Masato Hayakawa,&nbsp;Naoyuki Hirabayashi,&nbsp;Tomoharu Fujiyoshi,&nbsp;Saki Hotta,&nbsp;Hiroyuki Miyakawa,&nbsp;Yuko Murayama,&nbsp;Michiyo Yotsuyanagi,&nbsp;Kazunari Watanabe,&nbsp;Kyoko Sato","doi":"10.3358/shokueishi.64.154","DOIUrl":"https://doi.org/10.3358/shokueishi.64.154","url":null,"abstract":"<p><p>An inter-laboratory study involving 24 laboratories was conducted to validate the modified analytical method for the migration solution of heptane for the determination of bisphenol A migrating from polycarbonate food processing materials. In this study, two concentrations of samples were blindly coded. Each laboratory determined the analyte (bisphenol A, phenol and p-tert-butylphenol) concentration in each sample according to the established protocol. The obtained values were analyzed statistically using internationally accepted guidelines. Horwitz ratios were calculated based on the reproducibility relative standard deviation (RSD<sub>R</sub>), which was estimated from the inter-laboratory study, and predicted RSD<sub>R</sub>, which was calculated using the Horwitz/Thompson equation. Horwitz ratios of the two samples ranged from 0.15 to 0.37 for the three compounds, meeting the performance criteria of less than 2 set by the Codex Alimentarius for analytical method approval. These results showed that this modified analytical method shows good performance as an analytical method for the migration solution of heptane.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 4","pages":"154-160"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10180851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Method Improvement for Quantitative Analysis of Chlorophyll Degradation Compounds, Including Pheophorbide, in Chlorella Products]. [小球藻产品中叶绿素降解化合物(包括 Pheophorbide)定量分析方法的改进]。
IF 0.3 4区 农林科学
Food Hygiene and Safety Science Pub Date : 2023-01-01 DOI: 10.3358/shokueishi.64.191
Shizuka Saito-Shida, Maki Saito, Tomoaki Tsutsumi
{"title":"[Method Improvement for Quantitative Analysis of Chlorophyll Degradation Compounds, Including Pheophorbide, in Chlorella Products].","authors":"Shizuka Saito-Shida, Maki Saito, Tomoaki Tsutsumi","doi":"10.3358/shokueishi.64.191","DOIUrl":"10.3358/shokueishi.64.191","url":null,"abstract":"<p><p>An official analytical method for chlorophyll degradation compounds, including pheophorbide, in chlorella products, is described in notification Kanshoku No. 99 (May 8, 1981). However, this method has several operational issues, such as the formation of emulsion during liquid-liquid partitioning. Additionally, impurities present in the reagents (sodium sulfate decahydrate or anhydrous sodium sulfate) used to prepare saturated sodium sulfate solution can degrade pheophorbide and other related compounds, resulting in a significant decrease in analytical values. In this study, we thoroughly examined each step of the official method to enhance the operability and develop an alternative method that eliminates the need for saturated sodium sulfate solution. The developed method was evaluated for pheophorbide a and pyropheophorbide a at 100 mg%. Satisfactory analytical performance was achieved with trueness of 100% for pheophorbide a and 90% for pyropheophorbide a, and relative standard deviations of intra- and inter-day precision below 5% for both compounds. The proposed method is considered suitable for regulatory analysis of chlorophyll degradation compounds and would be useful for quality control of chlorella products.</p>","PeriodicalId":54373,"journal":{"name":"Food Hygiene and Safety Science","volume":"64 6","pages":"191-199"},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139089376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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