Meat from pasture-fed cattle can have high contents of α-tocopherol and other anti-oxidants originating from naturally occurring compounds present in grasses. However, meat from pasture-fed cattle may have an increased demand for endogenous anti-oxidants because of its high content of polyunsaturated fatty acids, which in turn, may affect its colour and lipid stability. In the work described, w...

AIMS Present study aimed at evaluating the colour stability and flexural strength of flexible denture base materials (Valplast) and Polymethyl methacrylate (PMMA) denture base material (Meliodent) processed by two different methods (Injection moulding and compression moulding) after immersing them in three different denture cleansers with acidic, basic and neutral PH. METHODS AND MATERIALS To...

hamoon is a new bread wheat cultivar derived from progenies of a cross made between falat and roshan. it is of spring habit and early maturity, 90-100 cm plant height, white spikes and thousand kernel weight of 40-45 gram. it is tolerant to lodging and environmental stresses(drought and salinity) as will as yellow rust. hamoon has hard grains of amber colour with averae protein content of 10.5%...

Background: The introduction of Bulk-Fill (BF) composite materials, among other new preparations, was one the most recent innovations in operative dentistry. All bulk composites' colour stability is a source concern. There has been lot research on effects different drinking solutions consistency conventional resin-based composites, but little written about changes BF resins, which have develope...

The effects of rosemary extract, chitosan and carnosine, added individually or in combination, on colour, lipid stability and sensory attributes of beef patties were investigated. All samples were stored for up to 15 days at 4 ± 1 oC. Surface colour (Hunter L*, a* and b* values), and lipid oxidation (2-thiobarbituric acid reactive substances) were measured on days 0, 1, 3, 6, 9, 12 and 15 of st...

By determining the locations of boundaries between colour categories, we measured changes in the colour appearance of test-reflectances as a function of the simulated illumination. Test-reflectances were displayed against a variegated background of reflectance samples. Under prolonged adaptation to each illuminant, observers demonstrated a high degree of appearance-based colour constancy. By us...

Karamucki T., Gardzielewska J., Rybarczyk A., Jakubowska M., Natalczyk-Szymkowska W. (2011): Usefulness of selected methods of colour change measurement for pork quality assessment. Czech J. Food Sci., 29: 212–218. A few selected methods of the meat colour change determination were compared with regard to their usefulness in the assessment of the quality of minced pork. The study was carried ou...

A method for the determination of total cholesterol in serum is described. Optimum conditions are found for the isolation of the steroid free from extraneous chromogens, and a new sensitive colour reagent is introduced. The procedure is convenient for routine application, the final colour being light-stable and reasonably time-stable at room temperature. Comparisons are made with one other meth...

Photonic crystals with tunability in the visible region are of great interest for controlling light diffraction. Mechanochromic photonic materials are periodically structured soft materials designed with a photonic stop-band that can be tuned by mechanical forces to reflect specific colours. Soft photonic materials with broad colour tunability and fast colour switching are invaluable for applic...