Nature preserves

Irrespective of the development of media, many of the traditional media are successfully defending their position. This is due to their hydrophilic nature, preserving biological function of the separated molecules, but also the fact that columns may be prepared easily and, finally, some of the classical media, e.g., Sephadex, have a selectivity that is so far unsurpassed and therefore very fit for use. Intersting enough, Sephadex is still the premiere gel filtration medium for desalting due to the optimal pore size and particle size of this medium (see Section II,C). 

One of the natural forms of preservation of dead remains is mummification a mummy is simply the body of a dead animal whose tissues have been diage-netically altered but whose morphology and structure have been preserved. Although the term mummification is generally used in relation to the purposeful preservation of dead humans and animals, it actually has a wider meaning - it also refers to the natural preservation of dead corpses (see Fig. 81). 

Orlov O. Radiation situation and its dynamics in forest ecosystems of Polissya natural preserve in the period of quasi-equilibrium of the radionuclides in soil-plant layer covering (1991-1999 pp.) //30 anniversary of PoUsya preserve. - Iss.l. - Zh)dormyr, 1999.-Pp. 116-129. 

Some compounded preparations are naturally preserved, as in the case of certain syrups and elixirs others require the addition of a preservative. Preservatives are commonly added to products to minimize microbial growth, as in the case of oral liquids, topicals, and multi-dose parenterals. A preservative is selected based upon its characteristics, including concentration, pH, taste, odor, and solubility. 

Mittermeier, R.A., Plotkin, M.J., Werner, T.B., Malone, S.A., Baal, F., MacKnight, J., Mohadin, K., and Werkhooven, M., Conservation Action Plan for Suriname. Report prepared by Conservation International, Suriname Forest Service, World Wildlife Fund, Foundation for Nature Preservation in Suriname, and the University of Suriname, 1990. 

For example, the natural sugars (sucrose, fructose, etc.) arc best known for their contribution of sweetness to food products. The sugars, however, also perform other useful functions, including their natural preservative qualities and, in many foods such as baked goods, contribute considerable bulk to the finished product. As described under Sweeteners, a number of artificial, non-carbohydrate compounds serve as excellent sweeteners, but they lack the ability to achieve the desired bulk,... 

Propionic acid might be also produced by fermentation of Propionibac-terium acidipropionici, thus providing an attractive alternative that can also meet consumer s demand for natural preservatives used in the food industry. However, conventional batch propionic acid fermentation suffers from low... 

Because cadavers comprise 60%-80% water their breakdown has been described as a competition between desiccation and decomposition (Auf-derheide 1981). The relationship between these processes is important because rapid desiccation can inhibit decomposition and result in the natural preservation of a cadaver for thousands of years, such as the natural mummies observed in Egypt (Ruffer 1921) and Peru (Allison 1979). Sledzik and Micozzi (1997) distinguished three types of mummification natural, intentional, and artificial. Dryness, heat, or absence of air may cause natural mummification. Intentional mummification is the result of exploitation or enhancement of natural mummification processes. Artificial mummification may be the result of evisceration, fire, or smoke curing and the application of embalming substances. 

The Turkish coast of the Black Sea, extending for approximately 1500 km, is so far beyond the interest of mass tourism, and is still a kind of a nature preserve. There are no high-tech hotels here so far, everything is done for calm rest. This is a domestic sluggish resort coastal zone, the greenest region in Turkey. 

Our range of unfragranced cosmetic base products use wholly naturally derived ingredients, except where non-natural preservatives/stabilisers are crucial for the integrity and effectiveness of the product overtime,... 

Fossils are the remains or traces of plants or animals that have been naturally preserved in the Earth s crust. Most fossils are found in mechanical sediments, although they do occur in other types of rocks. 

Fossil the remains or traces of organisms that have been naturally preserved in the Earth s crust. 

Usage Wide range of uses in food processing, because of its properties as antioxidant (though not technically listed as natural preservative) and its capacity to suppress warmed over flavour (WOF) ]248]. 

Lemay, M.J., Choquette, J., Delaquis, P.J., Claude, G., Rodrigue, N., and Saucier, L. 2002. Antimicrobial effect of natural preservatives in a cooked and acidified chicken meat model. International Journal of Food Microbiology 78 217-226. 

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