M. Ditrych, W. Filipowska, Agata Soszka, J. Buyse, Saskia Hofmann, Sidsel Jensen, B. Jaskula‐Goiris, G. De Rouck, G. Aerts, M. Andersen, L. De Cooman
{"title":"基于风味不稳定性参数的啤酒感官陈酿模型","authors":"M. Ditrych, W. Filipowska, Agata Soszka, J. Buyse, Saskia Hofmann, Sidsel Jensen, B. Jaskula‐Goiris, G. De Rouck, G. Aerts, M. Andersen, L. De Cooman","doi":"10.58430/jib.v130i1.45","DOIUrl":null,"url":null,"abstract":"Why was the work done: The deterioration of the flavour of fresh beer is challenging for the brewing industry. Despite extensive research on flavour instability, the focus has centred on a limited set of parameters, rather than taking a broader approach. \nHow was the work done: in this study, the intent was to produce a flavour stable beer. Using a low kilning temperature, malt of low staling potential was used in combination with best brewing practice to produce three batches of unpasteurised top fermented pale beers at a pilot scale. Forty-three markers were analysed in the fresh and aged beers (30°C for 15, 30, 60 and 90 days). Staleness was evaluated by a trained sensory panel and multivariate data analysis was used to explore how the markers contribute to staleness. \nWhat are the main findings: Repeatability was achieved between replicate brews and, subsequently, staling. Polyphenols, haze, total reactive antioxidant potential (TRAP), iso-α-acids, colour, furfural, 2-methylpropanal and 2-methylbutanal showed a strong correlation with staleness. Staleness doubled after 60 days of storage at 30°C, despite volatile aldehydes remaining below their sensory thresholds, implying a synergistic effect of carbonyls contributing to staleness. A Partial Least Square (PLS) model was established, modelling the sensory staleness from 2-methylpropanal, furfural, TRAP and the trans-/cis-iso-α-acids ratio. \nWhy is the work important: The staling phenomena could be reproduced in beers from parallel brewing trials with only minor variations. The four parameters in PLS modelling indicate that beer staling involves a combination of oxidative and non-oxidative pathways.","PeriodicalId":17279,"journal":{"name":"Journal of The Institute of Brewing","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modelling of beer sensory staleness based on flavour instability parameters\",\"authors\":\"M. Ditrych, W. Filipowska, Agata Soszka, J. Buyse, Saskia Hofmann, Sidsel Jensen, B. Jaskula‐Goiris, G. De Rouck, G. Aerts, M. Andersen, L. De Cooman\",\"doi\":\"10.58430/jib.v130i1.45\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Why was the work done: The deterioration of the flavour of fresh beer is challenging for the brewing industry. Despite extensive research on flavour instability, the focus has centred on a limited set of parameters, rather than taking a broader approach. \\nHow was the work done: in this study, the intent was to produce a flavour stable beer. Using a low kilning temperature, malt of low staling potential was used in combination with best brewing practice to produce three batches of unpasteurised top fermented pale beers at a pilot scale. Forty-three markers were analysed in the fresh and aged beers (30°C for 15, 30, 60 and 90 days). Staleness was evaluated by a trained sensory panel and multivariate data analysis was used to explore how the markers contribute to staleness. \\nWhat are the main findings: Repeatability was achieved between replicate brews and, subsequently, staling. Polyphenols, haze, total reactive antioxidant potential (TRAP), iso-α-acids, colour, furfural, 2-methylpropanal and 2-methylbutanal showed a strong correlation with staleness. Staleness doubled after 60 days of storage at 30°C, despite volatile aldehydes remaining below their sensory thresholds, implying a synergistic effect of carbonyls contributing to staleness. A Partial Least Square (PLS) model was established, modelling the sensory staleness from 2-methylpropanal, furfural, TRAP and the trans-/cis-iso-α-acids ratio. \\nWhy is the work important: The staling phenomena could be reproduced in beers from parallel brewing trials with only minor variations. 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Modelling of beer sensory staleness based on flavour instability parameters
Why was the work done: The deterioration of the flavour of fresh beer is challenging for the brewing industry. Despite extensive research on flavour instability, the focus has centred on a limited set of parameters, rather than taking a broader approach.
How was the work done: in this study, the intent was to produce a flavour stable beer. Using a low kilning temperature, malt of low staling potential was used in combination with best brewing practice to produce three batches of unpasteurised top fermented pale beers at a pilot scale. Forty-three markers were analysed in the fresh and aged beers (30°C for 15, 30, 60 and 90 days). Staleness was evaluated by a trained sensory panel and multivariate data analysis was used to explore how the markers contribute to staleness.
What are the main findings: Repeatability was achieved between replicate brews and, subsequently, staling. Polyphenols, haze, total reactive antioxidant potential (TRAP), iso-α-acids, colour, furfural, 2-methylpropanal and 2-methylbutanal showed a strong correlation with staleness. Staleness doubled after 60 days of storage at 30°C, despite volatile aldehydes remaining below their sensory thresholds, implying a synergistic effect of carbonyls contributing to staleness. A Partial Least Square (PLS) model was established, modelling the sensory staleness from 2-methylpropanal, furfural, TRAP and the trans-/cis-iso-α-acids ratio.
Why is the work important: The staling phenomena could be reproduced in beers from parallel brewing trials with only minor variations. The four parameters in PLS modelling indicate that beer staling involves a combination of oxidative and non-oxidative pathways.
期刊介绍:
The Journal has been publishing original research for over 125 years relating to brewing, fermentation, distilling, raw materials and by-products. Research ranges from the fundamental to applied and is from universities, research institutes and industry laboratories worldwide.
The scope of the Journal is cereal based beers, wines and spirits. Manuscripts on cider may also be submitted as they have been since 1911.
Manuscripts on fruit based wines and spirits are not within the scope of the Journal of the Institute of Brewing.