Моделювання рецептур сироватково-полуничних напоїв профілактичного призначення

Expediency of the development of formulae and innovative technologies for production of prophylactic application drinks possessing antioxidant, probiotic and hepatoprotective properties with the use of the secondary dairy product – whey, as well as the domestic vegetable raw materials having a high content of bioactive substances has been substantiated. Formulation composition of the prophylactic drinks based on cheese whey, extract of Tagetes patula flowers and the berry filler “Strawberry” with the use of the response surface method has been developed. Bioactivity of the drinks and the complex quality indicator which accounts for the total influence of the bioactivity, organoleptic assessment and weight coefficients of the specified unit indicators were taken as the optimization criteria; as the independent factors that were varied in the course of the experiment, the mass fractions of the marigold flowers extract and the strawberries filler were selected. It is recommended that the mass fractions of the berry filler “Strawberry” and the extract of Tagetes patula flowers in the prophylactic drinks are set as 7 and 20 % of the finished product, accordingly. The practical mass fraction of the citric acid of 0.2 % was determined as it ensures high organoleptic characteristics of the finished drinks. Recommendations are given concerning development of innovative technologies of unfermented and fermented strawberry whey drinks of prophylactic application enriched with the extract of Tagetes patula flowers.Обґрунтовано доцільність розроблення рецептур та інноваційних технологій напоїв профілактичного призначення з антиоксидантними, пробіотичними та гепатопротекторними властивостями з використанням вторинної молочної сировини – сироватки, а також вітчизняної сировини рослинного походження з високим вмістом біологічно активних речовин. Розроблено рецептурний склад напоїв профілактичного призначення на основі сирної сироватки, екстракту квітів Tagetes patula і ягідного наповнювача «Полуниця» з використанням методології поверхні відгуку. У якості критеріїв оптимізації обрано біологічну активність напоїв і комплексний показник якості, який враховує сукупний вплив біологічної активності, органолептичної оцінки і коефіцієнтів вагомості зазначених одиничних показників; незалежними факторами, які варіювалися, в експерименті – масові частки екстракту квітів чорнобривців і полуничного наповнювача. Рекомендовано масову частку ягідного наповнювача «Полуниця» та екстракту квітів Tagetes patula в напоях профілактичного призначення встановити 7 і 20 % від маси готового продукту відповідно. Визначено раціональну масову частку лимонної кислоти – 0,2 %, яка забезпечує високі органолептичні характеристики готових напоїв. Наведено рекомендації з розробки інноваційних технологій неферментованих і ферментованих сироватково-полуничних напоїв профілактичного призначення, збагачених екстрактом квітів Tagetes patula

Dislocation-Mediated Melting in Superfluid Vortex Lattices

We describe thermal melting of the two-dimensional vortex lattice in a rotating superfluid by generalizing the Halperin and Nelson theory of dislocation-mediated melting. and derive a melting temperature proportional to the renormalized shear modulus of the vortex lattice. The rigid-body rotation of the superfluid attenuates the effects of lattice compression on the energy of dislocations and hence the melting temperature, while not affecting the shearing. Finally, we discuss dislocations and thermal melting in inhomogeneous rapidly rotating Bose-Einstein condensates; we delineate a phase diagram in the temperature -- rotation rate plane, and infer that the thermal melting temperature should lie below the Bose-Einstein transition temperature.Comment: 9 pages, 2 figure

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Results of the study of temperature-frequency relationships of dielectric permittivity and dielectric loss tangent, electric strength and permolecular structure of polyvinylidene fluoride, modified nano-powder of nickel are presented in this paper. It was shown that load nano-particles of nickel in polyvinylidene fluoride lead to change of structure and electrophysical characteristics one

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The series of equilibrium states reached by disordered packings of rigid, frictionless discs in two dimensions, under gradually varying stress, are studied by numerical simulations. Statistical properties of trajectories in configuration space are found to be independent of specific assumptions ruling granular dynamics, and determined by geometry only. A monotonic increase in some macroscopic loading parameter causes a discrete sequence of rearrangements. For a biaxial compression, we show that, due to the statistical importance of such events of large magnitudes, the dependence of the resulting strain on stress direction is a Levy flight in the thermodynamic limit.Comment: REVTeX, 4 pages, 5 included PostScript figures. New version altered throughout text, very close to published pape