[{"_id":"12975","type":"scientific_journal_article","status":"public","page":"281-289","intvolume":"        80","department":[{"_id":"DEP4010"}],"user_id":"83781","place":"Amsterdam","issue":"10","title":"A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry","citation":{"ieee":"S. Ulrich, P. Beindorf, B. Biermaier, K. Schwaiger, M. Gareis, and C. Gottschalk, “A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry,” <i>Food Control</i>, vol. 80, no. 10, pp. 281–289, 2017, doi: <a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">10.1016/j.foodcont.2017.05.005</a>.","apa":"Ulrich, S., Beindorf, P., Biermaier, B., Schwaiger, K., Gareis, M., &#38; Gottschalk, C. (2017). A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry. <i>Food Control</i>, <i>80</i>(10), 281–289. <a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">https://doi.org/10.1016/j.foodcont.2017.05.005</a>","bjps":"<b>Ulrich S <i>et al.</i></b> (2017) A Novel Approach for the Determination of Freshness and Identity of Trouts by MALDI-TOF Mass Spectrometry. <i>Food Control</i> <b>80</b>, 281–289.","ama":"Ulrich S, Beindorf P, Biermaier B, Schwaiger K, Gareis M, Gottschalk C. A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry. <i>Food Control</i>. 2017;80(10):281-289. doi:<a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">10.1016/j.foodcont.2017.05.005</a>","chicago-de":"Ulrich, Sebastian, Philipp–Michael Beindorf, Barbara Biermaier, Karin Schwaiger, Manfred Gareis und Christoph Gottschalk. 2017. A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry. <i>Food Control</i> 80, Nr. 10: 281–289. doi:<a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">10.1016/j.foodcont.2017.05.005</a>, .","chicago":"Ulrich, Sebastian, Philipp–Michael Beindorf, Barbara Biermaier, Karin Schwaiger, Manfred Gareis, and Christoph Gottschalk. “A Novel Approach for the Determination of Freshness and Identity of Trouts by MALDI-TOF Mass Spectrometry.” <i>Food Control</i> 80, no. 10 (2017): 281–89. <a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">https://doi.org/10.1016/j.foodcont.2017.05.005</a>.","ufg":"<b>Ulrich, Sebastian u. a.</b>: A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry, in: <i>Food Control</i> 80 (2017), H. 10,  S. 281–289.","havard":"S. Ulrich, P. Beindorf, B. Biermaier, K. Schwaiger, M. Gareis, C. Gottschalk, A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry, Food Control. 80 (2017) 281–289.","van":"Ulrich S, Beindorf P, Biermaier B, Schwaiger K, Gareis M, Gottschalk C. A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry. Food Control. 2017;80(10):281–9.","short":"S. Ulrich, P. Beindorf, B. Biermaier, K. Schwaiger, M. Gareis, C. Gottschalk, Food Control 80 (2017) 281–289.","din1505-2-1":"<span style=\"font-variant:small-caps;\">Ulrich, Sebastian</span> ; <span style=\"font-variant:small-caps;\">Beindorf, Philipp–Michael</span> ; <span style=\"font-variant:small-caps;\">Biermaier, Barbara</span> ; <span style=\"font-variant:small-caps;\">Schwaiger, Karin</span> ; <span style=\"font-variant:small-caps;\">Gareis, Manfred</span> ; <span style=\"font-variant:small-caps;\">Gottschalk, Christoph</span>: A novel approach for the determination of freshness and identity of trouts by MALDI-TOF mass spectrometry. In: <i>Food Control</i> Bd. 80. Amsterdam, Elsevier  (2017), Nr. 10, S. 281–289","mla":"Ulrich, Sebastian, et al. “A Novel Approach for the Determination of Freshness and Identity of Trouts by MALDI-TOF Mass Spectrometry.” <i>Food Control</i>, vol. 80, no. 10, 2017, pp. 281–89, <a href=\"https://doi.org/10.1016/j.foodcont.2017.05.005\">https://doi.org/10.1016/j.foodcont.2017.05.005</a>."},"doi":"10.1016/j.foodcont.2017.05.005","extern":"1","publication_identifier":{"issn":["0956-7135"]},"abstract":[{"lang":"eng","text":"Properly handled fish is usually marketed as “fresh fish” until day 10 after fishing. About 40% of the total fishery that is used for direct human consumption is marketed in fresh form stored at temperatures up to +2 °C. Currently, there are no validated methods available for controlling the recommended period of storage. Apart from being a potential source for food fraud, spoiled fish represents a major source of foodborne illnesses and intoxications.\r\nIn this study, a rapid MALDI-TOF mass spectrometry based screening method was developed using the vitreous fluid of fish eyes as specimen for the examination of different days of storage. The vitreous fluid was collected from n = 100 freshly fished brown trouts at day 0, 3, 7, 9, and 11 post mortem (n = 20 brown trouts each day of examination). The samples were immediately measured by MALDI-TOF mass spectrometry in linear positive mode (mass range m/z 2000–20,000 Da). For quality assurance the experiment was repeated with a set of brown trouts (n = 100) originating from the same fish farm and with brown trouts (n = 100) originating from a different fish farm. For specificity testing rainbow trouts (n = 10) were examined accordingly. All obtained mass spectra were processed by means of MALDI Biotyper OC 3.1 and ClinProTools 3.0 software.\r\nThe MALDI Biotyper approach showed limited applicability for the identification of the time of storage. However, it was suitable to reliably discriminate between the closely related species brown and rainbow trout. Processing by ClinProTools revealed four crucial mass peaks (m/z 2594 Da, m/z 4857 Da, m/z 4879 Da, m/z 4899 Da) which enabled a reliable differentiation between day 0 and 3, 7, 9, 11 (rate of correct identification > 90%) as well as the differentiation between day 3 and 7, 9, 11 (rate of correct identification > 72%). However, this approach showed limited applicability within the end of the tested period of storage when comparing between day 7, 9, or 11."}],"publisher":"Elsevier ","publication":"Food Control","date_updated":"2025-06-18T12:06:11Z","year":"2017","quality_controlled":"1","language":[{"iso":"eng"}],"date_created":"2025-06-15T10:29:56Z","author":[{"first_name":"Sebastian","orcid":"0000-0002-4511-9537","full_name":"Ulrich, Sebastian","id":"85847","last_name":"Ulrich"},{"full_name":"Beindorf, Philipp–Michael","first_name":"Philipp–Michael","last_name":"Beindorf"},{"full_name":"Biermaier, Barbara","first_name":"Barbara","last_name":"Biermaier"},{"last_name":"Schwaiger","full_name":"Schwaiger, Karin","first_name":"Karin"},{"last_name":"Gareis","full_name":"Gareis, Manfred","first_name":"Manfred"},{"full_name":"Gottschalk, Christoph","first_name":"Christoph","last_name":"Gottschalk"}],"keyword":["MALDI-TOF","Mass spectrometry","Freshness","Fish","Quality control","Authenticity"],"publication_status":"published","volume":80},{"abstract":[{"text":"The consumption of edible insects (entomophagy) will gain greater significance facing the increasing global population, which is suggested to reach 9 billion people in 2050 (FAO., 2009). Due to their high amount of proteins, fatty acids, vitamins, and minerals insects represent a valuable source of essential nutrients.\r\nWhile the consumption of insects is very common in many countries of Africa and Asia, there is a far smaller acceptance for entomophagy in Western cultures. Though, products such as noodles or burger paddies made from insect meal have a better compliance and can already be purchased in some countries of the European Union. This processing step however involves the risk of adulteration, because there is no more possibility to authenticate the insects once they are ground.\r\nThe aim of this study was to investigate whether edible insects could be measured and distinguished by MALDI-TOF MS (matrix-assisted laser desorption ionization-time of flight mass spectrometry). Therefore, different kinds of edible insects (buffalo worms, mealworms, crickets and grasshoppers) were purchased via online shops and ground subsequently. The insect powder was extracted by vigorously shaking in diluted formic acid and measured by MALDI-TOF MS. The measurement provided reproducible as well as specific mass spectra and enabled a precise differentiation of the different species.","lang":"eng"}],"publication_identifier":{"issn":["0956-7135"]},"extern":"1","date_updated":"2025-06-18T12:08:47Z","publication":"Food Control","publisher":"Elsevier","language":[{"iso":"eng"}],"quality_controlled":"1","year":"2017","volume":76,"keyword":["MALDI-TOF MS","Mass spectrometry","Edible insects","Authenticity","Food quality"],"publication_status":"published","date_created":"2025-06-15T10:31:37Z","author":[{"last_name":"Ulrich","full_name":"Ulrich, Sebastian","orcid":"0000-0002-4511-9537","id":"85847","first_name":"Sebastian"},{"full_name":"Kühn, Ulrike","first_name":"Ulrike","last_name":"Kühn"},{"last_name":"Biermaier","first_name":"Barbara","full_name":"Biermaier, Barbara"},{"first_name":"Nicolo","full_name":"Piacenza, Nicolo","last_name":"Piacenza"},{"first_name":"Karin","full_name":"Schwaiger, Karin","last_name":"Schwaiger"},{"full_name":"Gottschalk, Christoph","first_name":"Christoph","last_name":"Gottschalk"},{"full_name":"Gareis, Manfred","first_name":"Manfred","last_name":"Gareis"}],"type":"scientific_journal_article","_id":"12976","place":"Amsterdam","user_id":"83781","department":[{"_id":"DEP4010"}],"intvolume":"        76","page":"96-101","status":"public","doi":"10.1016/j.foodcont.2017.01.010","citation":{"din1505-2-1":"<span style=\"font-variant:small-caps;\">Ulrich, Sebastian</span> ; <span style=\"font-variant:small-caps;\">Kühn, Ulrike</span> ; <span style=\"font-variant:small-caps;\">Biermaier, Barbara</span> ; <span style=\"font-variant:small-caps;\">Piacenza, Nicolo</span> ; <span style=\"font-variant:small-caps;\">Schwaiger, Karin</span> ; <span style=\"font-variant:small-caps;\">Gottschalk, Christoph</span> ; <span style=\"font-variant:small-caps;\">Gareis, Manfred</span>: Direct identification of edible insects by MALDI-TOF mass spectrometry. In: <i>Food Control</i> Bd. 76. Amsterdam, Elsevier (2017), Nr. 6, S. 96–101","van":"Ulrich S, Kühn U, Biermaier B, Piacenza N, Schwaiger K, Gottschalk C, et al. Direct identification of edible insects by MALDI-TOF mass spectrometry. Food Control. 2017;76(6):96–101.","havard":"S. Ulrich, U. Kühn, B. Biermaier, N. Piacenza, K. Schwaiger, C. Gottschalk, M. Gareis, Direct identification of edible insects by MALDI-TOF mass spectrometry, Food Control. 76 (2017) 96–101.","chicago":"Ulrich, Sebastian, Ulrike Kühn, Barbara Biermaier, Nicolo Piacenza, Karin Schwaiger, Christoph Gottschalk, and Manfred Gareis. “Direct Identification of Edible Insects by MALDI-TOF Mass Spectrometry.” <i>Food Control</i> 76, no. 6 (2017): 96–101. <a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">https://doi.org/10.1016/j.foodcont.2017.01.010</a>.","chicago-de":"Ulrich, Sebastian, Ulrike Kühn, Barbara Biermaier, Nicolo Piacenza, Karin Schwaiger, Christoph Gottschalk und Manfred Gareis. 2017. Direct identification of edible insects by MALDI-TOF mass spectrometry. <i>Food Control</i> 76, Nr. 6: 96–101. doi:<a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">10.1016/j.foodcont.2017.01.010</a>, .","bjps":"<b>Ulrich S <i>et al.</i></b> (2017) Direct Identification of Edible Insects by MALDI-TOF Mass Spectrometry. <i>Food Control</i> <b>76</b>, 96–101.","mla":"Ulrich, Sebastian, et al. “Direct Identification of Edible Insects by MALDI-TOF Mass Spectrometry.” <i>Food Control</i>, vol. 76, no. 6, 2017, pp. 96–101, <a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">https://doi.org/10.1016/j.foodcont.2017.01.010</a>.","ufg":"<b>Ulrich, Sebastian u. a.</b>: Direct identification of edible insects by MALDI-TOF mass spectrometry, in: <i>Food Control</i> 76 (2017), H. 6,  S. 96–101.","short":"S. Ulrich, U. Kühn, B. Biermaier, N. Piacenza, K. Schwaiger, C. Gottschalk, M. Gareis, Food Control 76 (2017) 96–101.","ama":"Ulrich S, Kühn U, Biermaier B, et al. Direct identification of edible insects by MALDI-TOF mass spectrometry. <i>Food Control</i>. 2017;76(6):96-101. doi:<a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">10.1016/j.foodcont.2017.01.010</a>","apa":"Ulrich, S., Kühn, U., Biermaier, B., Piacenza, N., Schwaiger, K., Gottschalk, C., &#38; Gareis, M. (2017). Direct identification of edible insects by MALDI-TOF mass spectrometry. <i>Food Control</i>, <i>76</i>(6), 96–101. <a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">https://doi.org/10.1016/j.foodcont.2017.01.010</a>","ieee":"S. Ulrich <i>et al.</i>, “Direct identification of edible insects by MALDI-TOF mass spectrometry,” <i>Food Control</i>, vol. 76, no. 6, pp. 96–101, 2017, doi: <a href=\"https://doi.org/10.1016/j.foodcont.2017.01.010\">10.1016/j.foodcont.2017.01.010</a>."},"title":"Direct identification of edible insects by MALDI-TOF mass spectrometry","issue":"6"}]