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Supplemental Material173SIP10 https://kids.britannica.com/students/article/foodprocessing/274375IP11 https://www.canr.msu.edu/fshn/research/food_processing_and_quality_enhancementIP12 https://www.eatright.org/homefoodsafety/safety-tips/foodpoisoning/safe-food-processingIP13 https://www.newfoodmagazine.com/article/125728/foodprocessing-industry/ IP14 https://www.technoserve.org/ourwork/entrepreneurship/food-processing/Annex C: Supplemental material Chapter 5C-a. Steps for answering RSQ1 (what visualisations about nanotechnology in food circulate on Twitter, with what textual tone, and as part of what storyline?)1. Constructing the Twitter datasetUsing Twitter API, we retrieved all the original tweets that were in English, were tweeted between 200749 and 2021,50 contained images, and contained – as text or as a hashtag – either nanofood or the combination of nano/nanotech/nanotechnology together with food.51 Because of its API, Twitter is an ideal platform for collecting visualisations used in a particular topical context, together with their accompanying text (which is the tweet’s text). Hence, we used the search string: ‘((#nanotech #food) OR (#nanotechnology #food) OR (#nano #food) OR (#nanotech #foodpackaging) OR (#nanotechnology #foodpackaging) OR (#nano #foodpackaging) OR #nanofood OR #foodnanotechnology OR (nanotech food) OR (nanotechnology food) OR (nano food) OR nanofood) -is:retweet lang:en has:images’, ‘start_time’: ‘2007-01-01T00:00:00Z’, ‘end_time’: ‘2021-07-01T00:00:00Z’.2. Analysing tweetsThe tweet list consisted of 4761 tweets. From this list, we selected the tweets that circulated the most frequently: tweets that were retweeted at least 10 times. 49 2007 is the earliest complete year for which historical tweets are available.50 The retrieval of tweets was conducted on 14 July 2021.51 These words were revealed in preliminary research as relevant. We included different variants of the same word (i.e., nano, nanotech, nanotechnology) as Twitter API returns results that match full words only.Efrat.indd 173 19-09-2023 09:47