{"title":"Loop-mediated isothermal amplification (LAMP) for rapid and easy identification of Omphalotus japonicus","authors":"Yohei Sugano , Kozue Sakata , Kosuke Nakamura , Aoi Hosokawa , Hirokazu Kouguchi , Tomohiro Suzuki , Kazunari Kondo","doi":"10.1016/j.fochms.2022.100115","DOIUrl":null,"url":null,"abstract":"<div><p><em>Omphalotus japonicus</em> is a major toxic mushroom in Japan. When food poisoning caused by <em>O. japonicus</em> occurs, quick and accurate identification using a method that does not rely on morphological discrimination is required. Because the loop-mediated isothermal amplification (LAMP) method meets these requirements, we developed a LAMP method for detecting <em>O. japonicus</em>. Amplification occurred within 60 min, and the presence or absence of <em>O. japonicus</em> was confirmed within 2 h, including the DNA extraction protocol. The LAMP method did not show cross-reactivity with 13 species of edible mushrooms, had high specificity toward <em>O. japonicus</em>, and had sufficient detection sensitivity even in a mixed mushroom sample containing 1% <em>O. japonicus</em>. Additionally, <em>O. japonicus</em> could be detected in simulated food poisoning samples of heated and digested mushrooms, and in actual food poisoning residual samples.</p></div>","PeriodicalId":34477,"journal":{"name":"Food Chemistry Molecular Sciences","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666566222000430/pdfft?md5=21bb3a97132cfc22a2b562f603b963b7&pid=1-s2.0-S2666566222000430-main.pdf","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Food Chemistry Molecular Sciences","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666566222000430","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"FOOD SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
Omphalotus japonicus is a major toxic mushroom in Japan. When food poisoning caused by O. japonicus occurs, quick and accurate identification using a method that does not rely on morphological discrimination is required. Because the loop-mediated isothermal amplification (LAMP) method meets these requirements, we developed a LAMP method for detecting O. japonicus. Amplification occurred within 60 min, and the presence or absence of O. japonicus was confirmed within 2 h, including the DNA extraction protocol. The LAMP method did not show cross-reactivity with 13 species of edible mushrooms, had high specificity toward O. japonicus, and had sufficient detection sensitivity even in a mixed mushroom sample containing 1% O. japonicus. Additionally, O. japonicus could be detected in simulated food poisoning samples of heated and digested mushrooms, and in actual food poisoning residual samples.