{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,9]],"date-time":"2026-06-09T09:38:26Z","timestamp":1780997906348,"version":"3.54.1"},"reference-count":58,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,10,27]],"date-time":"2022-10-27T00:00:00Z","timestamp":1666828800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ohio State University Comprehensive Cancer Center","award":["1\/1\/2021-06\/30\/2021"],"award-info":[{"award-number":["1\/1\/2021-06\/30\/2021"]}]},{"name":"Ohio State University Comprehensive Cancer Center","award":["R21CA249757"],"award-info":[{"award-number":["R21CA249757"]}]},{"name":"Ohio State University Comprehensive Cancer Center","award":["9\/16\/2021-8\/30\/2023"],"award-info":[{"award-number":["9\/16\/2021-8\/30\/2023"]}]},{"name":"Ohio State University Comprehensive Cancer Center","award":["6\/1\/2022-5\/31\/2024"],"award-info":[{"award-number":["6\/1\/2022-5\/31\/2024"]}]},{"DOI":"10.13039\/100000054","name":"National Cancer Institute","doi-asserted-by":"publisher","award":["1\/1\/2021-06\/30\/2021"],"award-info":[{"award-number":["1\/1\/2021-06\/30\/2021"]}],"id":[{"id":"10.13039\/100000054","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000054","name":"National Cancer Institute","doi-asserted-by":"publisher","award":["R21CA249757"],"award-info":[{"award-number":["R21CA249757"]}],"id":[{"id":"10.13039\/100000054","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000054","name":"National Cancer Institute","doi-asserted-by":"publisher","award":["9\/16\/2021-8\/30\/2023"],"award-info":[{"award-number":["9\/16\/2021-8\/30\/2023"]}],"id":[{"id":"10.13039\/100000054","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000054","name":"National Cancer Institute","doi-asserted-by":"publisher","award":["6\/1\/2022-5\/31\/2024"],"award-info":[{"award-number":["6\/1\/2022-5\/31\/2024"]}],"id":[{"id":"10.13039\/100000054","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Ohio State University","award":["1\/1\/2021-06\/30\/2021"],"award-info":[{"award-number":["1\/1\/2021-06\/30\/2021"]}]},{"name":"Ohio State University","award":["R21CA249757"],"award-info":[{"award-number":["R21CA249757"]}]},{"name":"Ohio State University","award":["9\/16\/2021-8\/30\/2023"],"award-info":[{"award-number":["9\/16\/2021-8\/30\/2023"]}]},{"name":"Ohio State University","award":["6\/1\/2022-5\/31\/2024"],"award-info":[{"award-number":["6\/1\/2022-5\/31\/2024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Introduction: Electronic cigarettes are the most popular tobacco product among U.S. youth, and over 80% of current youth users of e-cigarettes use flavored e-cigarettes, with fruit, mint\/menthol, and candy\/sweets being the most popular flavors. A number of new e-liquid flavors are currently emerging in the online e-cigarette market. Menthol and other flavored e-cigarettes could incentivize combustible tobacco smokers to transition to e-cigarette use. Methods: From February to May 2021, we scraped data of over 14,000 e-liquid products, including detailed descriptions of their flavors, from five national online vape shops. Building upon the existing e-liquid flavor wheel, we expanded the semantic databases (i.e., key terms) to identify flavors using WordNet\u2014a major database for keyword matching and group discussion. Using the enriched databases, we classified 14,000+ e-liquid products into the following 11 main flavor categories: \u201cfruit\u201d, \u201cdessert\/candy\/sweets\u201d, \u201ccoffee\/tea\u201d, \u201calcohol\u201d, \u201cother beverages\u201d, \u201ctobacco\u201d, \u201cmint\/menthol\u201d, \u201cnuts\u201d, \u201cspices\/pepper\u201d, \u201cother flavors\u201d, and \u201cunspecified flavor\u201d. Results: We find that the most prominent flavor sold in the five online vape shop in 2021 was fruit flavored products, followed by dessert\/candy\/other sweets. Online vendors often label a product with several flavor profiles, such as fruit and menthol. Conclusions: Given that online stores market products with multiple flavor profiles and most of their products contain fruit flavor, the FDA may have issued marketing denial orders to some of these products. It is important to further examine how online stores respond to the FDA flavor restrictions (e.g., compliance or non-compliance).<\/jats:p>","DOI":"10.3390\/ijerph192113953","type":"journal-article","created":{"date-parts":[[2022,10,27]],"date-time":"2022-10-27T20:37:58Z","timestamp":1666903078000},"page":"13953","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":31,"title":["Expanding the E-Liquid Flavor Wheel: Classification of Emerging E-Liquid Flavors in Online Vape Shops"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6086-0622","authenticated-orcid":false,"given":"Shaoying","family":"Ma","sequence":"first","affiliation":[{"name":"Center for Tobacco Research, The Ohio State University Wexner Medical Center, Columbus, OH 43214, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zefeng","family":"Qiu","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, The Ohio State University, Columbus, OH 43210, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Yang","sequence":"additional","affiliation":[{"name":"Center for Tobacco Research, The Ohio State University Wexner Medical Center, Columbus, OH 43214, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John F. P.","family":"Bridges","sequence":"additional","affiliation":[{"name":"Department of Biomedical Informatics, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, The Ohio State University, Columbus, OH 43210, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8838-4250","authenticated-orcid":false,"given":"Ce","family":"Shang","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1387","DOI":"10.15585\/mmwr.mm7039a4","article-title":"Notes from the Field: E-Cigarette Use Among Middle and High School Students\u2014National Youth Tobacco Survey, United States, 2021","volume":"70","author":"Ren","year":"2021","journal-title":"Morb. 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