Effect of сoncentration of coconut oil with demineralised whey powder on the properties of bean pastes

Abstract

There is a lack of protein products in the human diet, so balancing the nutritional composition of products remains an urgent task. The purpose of the study is to develop and determine the structural and mechanical characteristics of finishing processed products made from bean paste, demineralised whey powder, and coconut oil for confectionery. The main areas of technological use of confectionery pastes are developed: for applying to the surface of products as a layer; for creating flowers and shaped model products, as a decorative element for flour confectionery products. The study used food-grade white beans of the Mavka variety, demineralised whey powder made from whey with a 90% degree of demineralisation in accordance with TS U 15.5-00413890-089:2014. Rheological properties (resilience, elasticity, plasticity) were determined by a plane-parallel elastoplastometer of Tolstoy modification. The surface characteristics of pastes were studied using a dynamometer connected to a MiG-1.3 measuring device. The adhesive strength was determined by separating the steel plate from the bean paste. Empirical regression equations are obtained by correlation and regression analysis using the MATHCAD-14 software suite. The chemical composition of bean pastes with demineralised whey powder, their organoleptic quality indicators and structural and mechanical properties were determined to optimise the recipe composition to improve the functional and technological properties of confectionery pastes. The positive effect of the mutual use of beans and demineralised whey powder on the structural and mechanical properties of new finishing processed products was established. The improvement of the moulding capacity indicators at the concentration of 10-30% demineralised whey powder and 8% coconut oil in the composition has been proven. The reduction of stickiness in the compositions of bean pastes for modelling shaped products, coating confectionery, and making flowers as decorative confectionery products at a concentration of coconut oil up to 10% was established. Accordingly, the total scores of the developed descriptors were: 2.92 for decorative confectionery, 2.98 for coating confectionery, and 2.95 for modelling shaped products. A change in the colour intensity of bean paste compositions in the case of an increase in the concentration of demineralised whey powder is established, which allows expanding the technological methods of manufacturing shaped products. The developed technology and recipe composition allow obtaining high-quality, high-biological value, and low-calorie finishing processed products for confectionery