Influence of temperature modes of processing chia seed meal gel on its rheological and functional-technological properties
The object of research. One of the alternatives of naturally occurring structuring agents with great potential in the food industry is the use of chia seeds. The meal obtained from the processing of chia seeds is the object of the above studies.
Investigated problem. The study of changes in the emulsifying and rheological properties of chia seed meal, depending on the temperature treatment regimes, will determine the manifestation of the cryoprotective properties of this additive. This will help to solve the problem of deterioration in the quality of frozen split ends as a result of uncontrolled formation of ice crystals in the structure of the meat product.
Main scientific results. Determination of the effect of heat treatment (heating to 70±2 C and freezing to -18 °C in the center) on the emulsifying properties of hydrated systems of chia seed meal showed that the emulsifying ability index increases by 7 % and 16 %, and the emulsion stability - by 8.7 % and 18.8 % according to the type of heat treatment. A decrease in emulsifying ability, emulsion stability, effective viscosity and shear stress was found in proportion to an increase in the degree of hydration.
An increase in the indicators of effective viscosity and tangential shear stress as a result of heat treatment of prototypes was noted – by 45.3 % and 46.5 %, respectively. Freezing the hydrated dispersion of chia seed meal led to an increase in the ultimate shear stress by an average of 18.45 % compared to the untreated sample, the effective viscosity of the experimental dispersion did not change.
The area of practical use of the research results. It can be used at food industry enterprises to improve the emulsifying and structural properties of products and their enrichment with dietary fiber.
The innovativeness of the proposed solution. The results obtained prove the prospects of using this additive as a stabilizer, emulsifier and cryoprotectant in the technology of frozen meat products.
The area of use of the innovative solution. This will ensure a consistently high quality of finished products and will improve the efficiency of production of a wide range of food products.
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