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Use of sweeteners in soft drinks and their effect on the sensory quality
ČIHÁKOVÁ, Tereza
The subject of this thesis was to evaluate the use of sweeteners in a selected group of soft drinks in terms of influencing sensory quality. Using selected methods of sensory analysis were five kinds of non-alcoholic drinks evaluated - four orange lemonades and one mandarin, which contained different composition of sweeteners. Three out of five samples were suitable for diabetics, because they only contained synthetic alternative sweeteners, one sample contained fructose-glucose syrup and the last sample contained sucrose. Individual samples were assessed by evaluators divided into three groups according to age. First group were evaluators at the age of 11-14, pupils from primary school Kosova Hora, second group - students of University of South Bohemia and the last group were evaluators above 40. The aim of this thesis was to lead to different results in different groups, depending on the attitudes and habits. There were big differences recorded among studied samples. It is interesting that neither group had failed to identify the best sample E, which is only sucrose. The top rated samples were sample A containing aspartame and acesulfame K, and the sample D with fructose-glucose syrup. The worst samples were clearly identified samples B and C, containing three and four kinds of synthetic sweeteners. Last but not least the paper includes a questionnaire for consumers, whose aim was to find out what influences the respondents while buying soft drinks and what is their attitude towards subsitute sweeteners.
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