Browsing by Subject "Sensory tests"

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  • Piuhola, Pauliina (Helsingin yliopisto, 2021)
    This thesis highlights consumer perceptions of brewer’s spent grain (BSG) in food products. BSG is a by-product of beer production that has good potential to be used in food products because of its high nutritional value. It is a readily available and sustainable ingredient, but it is underexploited in food production due to some challenges it faces, including poor technological quality, logistics and easy spoilage. The subject of this thesis aligns with the scope of United Nations Sustainable Development Goals: one of the targets is to halve food waste by 2030 and reduce food losses in production. Presently, 13.8% of food is lost in the production and supply chain, and therefore, some companies have started employing circular economy practices using the outputs of food production as inputs for new innovative products. These foods are often termed upcycled foods. This research is about new food product development using BSG as an ingredient and this study tests consumer acceptance of BSG fortified granolas. A multi-method survey was deployed, containing both quantitative and qualitative questions to obtain a comprehensive picture of how consumers perceive the use of BSG in food products. Due to the COVID-19 restrictions, the research was conducted in an uncontrolled environment at participants’ homes, using elements of both sensory tests and product concept tests. Participants (N=45) evaluated three BSG fortified granolas and one commercial granola used as a control product. All participants expressed interest in consuming BSG enriched food products. All four granola samples were rated on taste, sweetness, smell, structure, appearance and overall pleasantness. According to this study, the participants accepted this type of upcycled food and would be interested to purchase BSG fortified products. No statistically significant differences were observed between consumer groups when comparing genders, age groups, diet groups, beer enthusiasts and environmentally conscious consumers. For further research about consumer perceptions towards BSG, a larger sample size is recommended as well as conducting the research as a traditional sensory test in a controlled laboratory setting. Also, further product concept tests or these types of hybrid tests combining elements from both sensory and product concept tests can provide added value for new product development purposes. This master’s thesis is part of the Funbrew transnational project (Biotransformation of brewer’s spent grain: increased functionality for novel food applications) part of the ERA-Net SUSFOOD2 with funding provided by national sources (FORMAS, Sweden; MMM, Ministry of Agriculture and Forestry of Finland; MIUR, Ministero Italiano dell’Università e della Ricerca) and co-funding by the European Union’s Horizon 2020 Research and Innovation Programme.