Plant fibers definition

Definition Natural polysaccharide derived from plant fibers... 

Synonyms a-Amylose a-Cellulose Cellulose crystalline Cellulose powder Cellulose, powdered Cellulose pulp Cotton fiber Crystalline cellulose Hydroxycellu-lose Powdered cellulose Pyrocellulose Wood pulp, bleached Definition Natural polysaccharide derived from plant fibers Properties Colorless to wh, solid, odorless si, sol. in sodium hydroxide sol n. insol. 

Each plant or laboratory should adopt definite rules and procedures for electrical iastahations and work. All iastahations should be ia accordance with the National Electrical Code (NEC) for the type of ha2ard, eg. Class I flammable gas or vapor Class II organic, metallic, or conductive dusts and Class III combustible fibers and the degree of process containment, eg. Division 1 open and Division 2 closed (67). Regardless of the flammabiUty of the materials ia the iastaHed operations, changes ia procedure involving use of such materials often occur, sometimes without concurrent alteration of the electrical iastaHation. 

Historically, dietary fiber referred to iasoluble plant cell wall material, primarily polysaccharides, not digested by the endogenous enzymes of the human digestive tract. This definition has been extended to iaclude other nondigestible polysaccharides, from plants and other sources, that are iacorporated iato processed foods. Cellulose [9004-34-6] (qv) is fibrous however, lignin [9005-53-2] (qv) and many other polysaccharides ia food do not have fiberlike stmctures (see also Carbohydrates). 

We have defined the properties faced by developers of new growing media. Based on these definitions, it is clear that reticulated foam would not be useful for such applications. Even at the finest pore size, virtually no water is retained during this test. If, however, we were to graft hydrophilic polyurethane onto a reticulated foam, the grafted polyurethane increases the amount of water retained in the moisture tension test. If an organic fiber such as peat moss is included in the hydrophilic polyurethane, the effect is even more pronounced. Applications in both hydroponic and soil planting are anticipated from this technology. 

Wood-plastic composite (WPC) deck boards are extruded or molded products of a specified shape and, by definition, represent plastic filled with cellulose fiber and other ingredients. In this context wood is a proxy for fibrous materials of plant origin. These materials will be considered in the next chapter. This chapter deals with a plastic component of composite deck boards, with an understanding that the plastic is thermoplastic. 

The remainder of carbohydrates in SB and SBM not accounted for in the nonstructural carbohydrates belongs to the structural carbohydrates. The structural carbohydrates are, by definition, polysaccharides because of their function in the plant and include those fractions that can be quantified by common fiber analysis assays. Con-... 

The widely accepted definition of dietary fiber as proposed by Trowell (1) refers to "plant polysaccharides and lignin which are resistant to hydrolysis by digestive enzymes of man" as the sole constituents of dietary fiber. Being limited to the plant polymers only, this definition does not include undigestible polysaccharides from other sources such... 

Dietary fiber (DF) has taken on a larger meaning than its original definition of plant cell wall material resistant to the digestive process (IJ in animals or man. 

Definition Soft white cellulosic substance composed of fibers surrounding the seeds of various plants (Genus Gossypium) It. powder of ground cotton fibers Properties Sp.gr. 1.6... 

There has been much debate of the definition of dietary fiber and in particular whether it should include carbohydrates other than nonstarch polysaccharides. Recently, the American Association of Cereal Chemists (AACC) proposed a new definition of dietary fiber, which would include both oligosaccharides and resistant starch as well as associated plant substances. This new definition would also require complete or partial fermentation and demonstration of physiological effects such as laxation, and reduction in blood glucose or blood cholesterol. A similar approach to include beneficial physiological effects is also proposed by the Food and Nutrition Board of the US Institute of Medicine. 

---