M.N. Handayani, D. Cakrawati, S. Handayani
The aim of the study were to know characteristics of yam modified flour; to know the effect of modified yam flour on some physicochemical and sensory properties of synbiotic yoghurt and to determine the concentration level of modified yam flour to produce symbiotic yoghurt preferred by panelists. The reasearch was conducted using one factor complete randomized design. Modified yam flour was added to yoghurt at concentration of 2%, 4%, 6%. The effect of physical modification were investigated. Proximate analysis showed modified yam flour consist of 7.66% moisture content, 1.42% ash content, 10.16%, dietary fiber, 7.49% inulin, and 71.78% total starch content. Result obtained that modified yam flour has yield of 10.54%, the modified yam flour showed solubility and water absopsion of 77,63% and 136,65 respectively. The addition of modified yam flour on yoghurt resulted significantly difference effect on texture, but did not have significantly difference on colour, flavour and aroma. Modified yam flour added yoghurt thickness because it was gelatinized when added to yoghurt at 40°C. Sensory analysis conducted with hedonic test showed synbiotic yoghurt added with 2% of modified yam flour most preferred by panellists. Synbiotic yoghurt with 2% of modified yam flour has pH number of 4, 8 and total acid tirated of 1, 7%. © Published under licence by IOP Publishing Ltd.
Agro-industrial Technology Education Program, Faculty of Technology and Vocational Education, Universitas Pendidikan Indonesia, Indonesia
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