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In this study, polystyrene nanofibrous (PSNF) mats containing the bromothymol blue (BTB) indicator were obtained by SBS for the pH sensing of wine sample. The incorporation of the indicator did not promote changes in fiber diameter but led to the appearance of beads, allowing for the encapsulation of BTB. The halochromic property of BTB was retained in the PSNF material, and the migration tests showed that the indicator mats presented values below the maximum acceptable limit (10 mg dm\u22122) established by EU Commission Regulation No. 10\/2011 for foods with an alcohol content up to 20%. The present study opens the possibility of applying nanostructured materials to innovative food packaging which, through nanosensory zones, change color as a function of the food pH.<\/jats:p>","DOI":"10.3390\/s20020417","type":"journal-article","created":{"date-parts":[[2020,1,13]],"date-time":"2020-01-13T04:05:51Z","timestamp":1578888351000},"page":"417","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Halochromic Polystyrene Nanofibers Obtained by Solution Blow Spinning for Wine pH Sensing"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5932-4996","authenticated-orcid":false,"given":"Kelvi W.E.","family":"Miranda","sequence":"first","affiliation":[{"name":"Graduate Program in Biomaterials Engineering, Federal University of Lavras, Lavras 37200-000, Brazil"},{"name":"Nanotechnology National Laboratory for Agriculture, Embrapa Instrumenta\u00e7\u00e3o, S\u00e3o Carlos 13560-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caio V. 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