{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T07:22:17Z","timestamp":1787728937763,"version":"build-2784847793"},"reference-count":44,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,7,2]],"date-time":"2024-07-02T00:00:00Z","timestamp":1719878400000},"content-version":"vor","delay-in-days":183,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","award":["O.T. PNE 011\/2014"],"award-info":[{"award-number":["O.T. PNE 011\/2014"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006181","name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado da Bahia","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006181","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Food Science"],"published-print":{"date-parts":[[2024,1]]},"abstract":"<jats:p>Guarana seeds are typically processed using one of three drying methods: traditional sun exposure, greenhouse drying, or the <jats:italic>alguidar<\/jats:italic> oven technique. In our research, we evaluated the contents of methylxanthines and flavan\u20103\u2010ols in sun\u2010 and <jats:italic>alguidar<\/jats:italic>\u2010dried guarana seeds from Bahia State\u2019s Low Sul Identity Territory. Caffeine, theobromine, catechin, and epicatechin were determined by high\u2010performance liquid chromatography with UV\u2010visible detection (HPLC\/UV\u2010vis). Statistical tools, including analysis of variance (ANOVA), Tukey\u2019s test, and exploratory analysis, were employed to analyze the obtained data. Our findings indicated that the flavan\u20103\u2010ols content in sun\u2010dried guarana samples was lower compared to those dried using the <jats:italic>alguidar<\/jats:italic> oven, possibly due to exposure to ultraviolet radiation from solar energy. Conversely, we observed no significant differences (<jats:italic>p<\/jats:italic> &gt; 0.05) in the average contents of methylxanthines between the two drying methods. Our supplementary experiments involving UV\u2010A and UV\u2010C radiation lamps revealed a decreasing trend in methylxanthines and flavan\u20103\u2010ols contents with increasing duration of UV radiation exposure.<\/jats:p>","DOI":"10.1155\/2024\/7310510","type":"journal-article","created":{"date-parts":[[2024,7,2]],"date-time":"2024-07-02T15:38:26Z","timestamp":1719934706000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Methylxanthine and Flavonoid Contents from Guarana Seeds (<i>Paullinia cupana<\/i>): Comparison of Different Drying Techniques and Effects of UV Radiation"],"prefix":"10.1155","volume":"2024","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8508-7007","authenticated-orcid":false,"given":"Andr\u00e9 Luiz Sampaio","family":"da Silva Junior","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4405-6519","authenticated-orcid":false,"given":"Madson Moreira","family":"Nascimento","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3760-007X","authenticated-orcid":false,"given":"Herick Macedo","family":"Santos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8435-417X","authenticated-orcid":false,"given":"Ivon Pinheiro","family":"L\u00f4bo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6700-9710","authenticated-orcid":false,"given":"Rosilene Aparecida","family":"de Oliveira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6366-948X","authenticated-orcid":false,"given":"Raildo Mota","family":"de Jesus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,7,2]]},"reference":[{"key":"e_1_2_8_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.bjp.2018.08.007"},{"key":"e_1_2_8_2_2","volume-title":"Empresa Brasileira de Pesquisa Agropecu\u00e1ria","author":"EMBRAPA","year":"2005"},{"key":"e_1_2_8_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodres.2017.09.055"},{"key":"e_1_2_8_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jff.2018.05.048"},{"key":"e_1_2_8_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2017.12.074"},{"key":"e_1_2_8_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jep.2013.08.023"},{"key":"e_1_2_8_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2012.04.148"},{"key":"e_1_2_8_8_2","doi-asserted-by":"publisher","DOI":"10.2174\/1874065001206010001"},{"key":"e_1_2_8_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/ptr.5173"},{"key":"e_1_2_8_10_2","doi-asserted-by":"publisher","DOI":"10.1155\/2019\/8204129"},{"key":"e_1_2_8_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jff.2019.103733"},{"key":"e_1_2_8_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.fct.2005.11.010"},{"key":"e_1_2_8_13_2","doi-asserted-by":"publisher","DOI":"10.3390\/nu15020434"},{"key":"e_1_2_8_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jff.2023.105944"},{"key":"e_1_2_8_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.foodchem.2013.05.122"},{"key":"e_1_2_8_16_2","doi-asserted-by":"publisher","DOI":"10.1111\/1541-4337.12862"},{"key":"e_1_2_8_17_2","unstructured":"MAPA Minist\u00e9rio da Agricultura Pecu\u00e1ria e abastecimento. 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