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Advisor(s)
Abstract(s)
The zero-waste economy has many challenges, of which the most important is the need for attractive
technologies for the effective recycling of by-products. One of challenges in dairy industry is to
effectively use large quantities of dairy by-products, e.g., the milk permeate (MP). MP is a dairy industry
by-product obtained during milk protein concentrate production. The aim of this study was to develop
nutraceutical in chewing form (NC) preparations. The main ingredients used for the preparation of
added-value nutraceuticals were MP (containing GOS), extruded and fermented wheat bran (containing
log10 colony-forming unit CFU/g viable antimicrobial property showing the LAB strains), psyllium
husk (PH) (source of desirable hydrocolloids), and apple by-products (AP) (source of phenolic
compounds). Also, for the preparation of NC, gelatin and agar were tested. In the NC formulations,
citric acid (CA) was replaced to ascorbic acid (AA) to obtain a desirable hard texture of samples with
agar. The optimal quantities of bioactive ingredients were selected by performing an overall acceptability
(OA) test and evaluating emotions induced by consumers. Moreover, viable LAB count during storage,
colour, texture, and antioxidant characteristics were evaluated. The highest OA (score 8.5) was shown
for samples consisting of MP, PH, AP, CA, and xylitol (XY), a very strong correlation was found
gelatin, MP, PH, AP, and CA showed a LAB count higher than 6.0 log10 CFU/g, but higher antioxidant
activity were found for the NC prepared with agar. Finally, it can be acknowledged that fermented MP,
PH, and AP can be used for preparation of added-value NC in a sustainable manner.
Description
Keywords
nutraceuticals overall acceptability apple by-products psyllium husk emotions induced in consumers milk permeate
Citation
Zokaityte E, Siriakovaite K, Starkute V, Zavistanaviciute P, Lele V, Mozuriene E, Klupsaite D, Viskelis P, Ruibys R, Guiné RPF, Bartkiene E. (2022) Application of valorized dairy industry by-products for nutraceutical formulas development, in Abstract Book of 16th International Scientific Conference THE VITAL NATURE SIGN, Kaunas, Lithuania, p. 20.