Title: The important role of sensory evaluation in the development of novel multifunctional ingredients
Authors : Sych, Janice Marie
Popp, Stephan
Bongartz, Annette
Mathias, Mathias
Grattepanche, Franck
Conference details: 5th European Conference on Sensory and Consumer Research, Bern, Switzerland, September 9–12, 2012
Issue Date: 9-Sep-2012
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subject (DDC) : 664: Food technology
Abstract: Sensory evaluation has a central role in the development of novel multifunctional ingredients (MFI) in a project funded by the Swiss government (CTI project number 10276.1 PFLS-LS; 2009-2012) involving ZHAW, the Laboratory of Food Biotechnology, ETHZ (Institute of Food, Nutrition and Health) and three Swiss Industry partners: Bakels AG, Coop, and Bioforce AG. The MF ingredients are naturally produced by fermentation technology2 using food-safe microorganisms (i.e. Lactobacillus, Propionic bacteria). MFI contain the vitamins folate and B12; organic acids, such as propionic and acetic acids; and also other functional substances . Clearly MFI have high potential for adding value and benefits to bakery applications and offering new sources of nutritional supplements. In the project, consensus profiling (DIN 10967-2) is being used to identify and characterize different flavours and aroma components in MFI-enriched breads compared with controls (without MFI). This allows to identify both desired and undesired attributes in MFI-breads, therefore allowing rapid adjustments to the fermentation technology and baking trials at pilot scale. Triangle tests are used to test for small differences between MFI-breads and controls. Hedonic tests by consumer panellists are planned for the final ingredients. The present study focused on an off-flavour detected in MFI-enriched breads which resembles that of propionic acid. With the aim of masking or attenuating the off-flavour, five different bread formulations,  i.e. whole-wheat-, walnut-, light sour-dough rye-, chia bread and white-bread, were enriched with MFI (2 g/kg dough) and studied for sensory attributes, compared with control bread. The off-flavour was best attenuated by formulations with whole-wheat and chia seeds, as evaluated by consensus profiling. Results were confirmed by a triangle test, showing no significant differences between both MFI-whole-wheat bread and MFI-chia bread (both at 0.2% MFI) compared with their respective control breads. The study shows how sensory is being used to guide the development of MFI ingredients, bringing them closer to commercialization.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Food and Beverage Innovation (ILGI)
Publication type: Conference Poster
URI: https://digitalcollection.zhaw.ch/handle/11475/4195
Published as part of the ZHAW project : Multifunctional bakery bioingredients
Appears in Collections:Publikationen Life Sciences und Facility Management

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