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Hydrophilic pigments

The purpose of this chapter is to provide an overview of our present knowledge about the health benehts of pigments, particularly their effects on chronic diseases. We examine the effects of lipophilic (carotenoids, chlorophylls) and hydrophilic pigments (anthocyanins and flavones-flavonols), and curcumin. Descriptive and mechanistic studies are reviewed in regard to common chronic diseases. [Pg.128]

Betacyanins and anthocyanins are the major hydrophilic pigments in onr diet, and most of the literature focusing on health essentially concerns anthocyanins — the largest group of water-soluble pigments in the plant kingdom. They belong to the... [Pg.135]

Because most food matrices are water soluble, many efforts were directed to the formulation of lipophilic pigments (mainly carotenoids) into water-soluble formulations (powders or gels). For hydrophilic pigments like flavonoids, polar dried microcapsules are the most popular ways to stabilize their functionality. Extracts rich in P-carotene were encapsulated using three different encapsulation techniques (spray drying, drum drying, and freeze drying)." ... [Pg.320]

For a successful incorporation of a pigment into the latex particles, both type and amount of surfactant systems have to be adjusted to yield monomer particles, which have the appropriate size and chemistry to incorporate the pigment by its lateral dimension and surface chemistry. For the preparation of the miniemulsions, two steps have to be controlled (see Fig. 14). First, the already hydrophobic or hydrophobized particulate pigment with a size up to 100 nm has to be dispersed in the monomer phase. Hydrophilic pigments require a hydro-phobic surface to be dispersed into the hydrophobic monomer phase, which is usually promoted by a surfactant system 1 with low HLB value. Then, this common mixture is miniemulsified in the water phase employing a surfactant system 2 with high HLB, which has a higher tendency to stabilize the monomer (polymer)/water interface. [Pg.105]

Features Helps prevent interfacial fens, befween the hydrophilic pigments/ extenders and the binder reduced disp. time and pigment sedimentation reduced tendency to orange peel... [Pg.314]

Uses Pigment dispersant for paints and aq. coatings based on polymeric binders (paper coatings, adhesives, carpet backings, plasters) Features Low foaming effective with hydrophilic pigments and extenders... [Pg.586]

One example of the variation of the zeta potential with both pH and salt concentration is shown in Figure 10.13 for the titanium oxide particles, a well-known hydrophilic pigment, often used in paints (organic pigments are hydrophobic). The lEP where the potential is zero is around 7 in this case. The particles will aggregate close to this pH as the electrostatic repulsion will be very weak. We have positively charged surfaces at pH < lEP and negative ones at pH > lEP. [Pg.224]


See other pages where Hydrophilic pigments is mentioned: [Pg.471]    [Pg.353]    [Pg.127]    [Pg.135]    [Pg.321]    [Pg.321]    [Pg.97]    [Pg.471]    [Pg.17]    [Pg.827]    [Pg.313]    [Pg.314]    [Pg.586]    [Pg.1445]    [Pg.1445]    [Pg.1445]    [Pg.1445]    [Pg.49]    [Pg.8880]    [Pg.342]    [Pg.13]    [Pg.392]    [Pg.812]    [Pg.812]   
See also in sourсe #XX -- [ Pg.135 , Pg.136 , Pg.137 ]




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