Potato pulp starches

An experimental process has been described for extracting cellulose microfibrils from waste potato pulp and using these to manufacture starch-cellulose composites (Duifesne et al., 2000). 

The particulate fraction, called potato pulp, besides the fruit liquid and water in intact cells, contains starch, cellulose, hemicelluloses, pectin, and proteins. On a dry matter basis, the pulp contains 74% of protein in comparison to the content in potato tuber (Kempf, 1980). Components of conventional wet potato pulp are listed in Table 16.1. 

In countries where a strong environmental regulation for industrial wastewater exists, purification of waste streams from potato factories regarding both the fruit water and the pulp is required. Several attempts have been made to dehydrate the by-products and to utilize them for different purposes. Its high moisture content (80%) requires an expensive drying due to the problem of spoilage, if left untreated. The starch industry tries to sell as much pulp as possible as wet or partially dried cattle feed. However, the need for potato pulp by farmers is limited. Potato pulp is being used as cattle feed as well as a solid-state fermentation media for the production of different biomolecules. Conventional applications of potato pulp are listed in Table 16.2. 

Trojanowski, J., Mayer, F., Hutterman, A. (1995). Utilization of potato pulp and potato liquor for the production of laeease by selected basidiomycetes. Starch/Starke, 47, 116-118. 

A PLACE POTATO PULP ON DOUBLE LAYER OF CHEESE CLOTH. FOLD UP AND TIE. DIP BAG IN POT OF WATER. SQUEEZE. DIP AND SQUEEZE UNTIL MOST STARCH IS OUT. 

Tuber roots, their products and by-products Sugarbeet pulp, dried beet, potato, sweet potato as tuber, manioc as roots, potato pulp (byproduct of the extraction of potato starch), potato starch, potato protein and tapioca... 

Surprisingly, the association between TPS and cellulose fibres (polysaccharide-based composites) has been little analysed. In the literature, cellulose fillers used in association with a plasticized starch matrix are commercial paper fibres,10 potato pulp microfibrils,11 12 tunicin whiskers and paper bleached pulp.13-14 The literature reports that these cellulose fillers improve the tensile strength. Besides, the composite water sorption seems to be decreased. This behaviour is related to the well known lower water uptake of cellulose compared to starch.10-14... 

When a feed material contained more than 10% starch, the level of FOM was reduced to take into account the starch fraction that escapes rumen digestion. The multiplication coefficient used for FOM was 0.6 for maize, sorghum and rice, and 0.8 for peas, faba beans, potato pulp, whole potatoes, full fat and extracted rice bran, maize germ meals, maize bran and cassava. A value of 0.95 was used for all the other feed materials containing more than 10% starch. 

The manufacture of potato starch is a simple and easy process based on thorough comminution of potato tubers, separation of starch from potato pulp, its purification and dehydration. All the processing steps before drying have been described in detail by Lisinska and Leszczynski [9] and Treadway [10]. 

One of the important parts in potato starch technology is utilization of secondary products such as extracted potato pulp (pomace) and the soluble constituents of the... 

About 10% of the potato input for starch processing results in potato pulp. In addition to starch, this pulp contains cellulose, hemicellulose, pectin, and protein. 

Potato pulp extract. See Potato (Solanum tuberosum) extract Potato (Solanum tuberosum) extract CAS 90083-08-2 EINECS/ELINCS 290-202-7 Synonyms Potato extract Potato pulp extract Solanum tuberosum Definition Extract of the pulp of the potato, Solanum tuberosum Uses Smoothing agent in cosmetics Potato (Solanum tuberosum) starch CAS 9005-25-8 169105-05-9 977000-07-9 EINECS/ELINCS 232-679-6 Synonyms Solanum tuberosum Definition Natural substance obtained from potatoes, Solanum tuberosum, contg. amylose and amylopectin Empirical (CeHio05)n... 

Rotary lobe slurry pumps are used with certain soft slurries with mild abrasion characteristics such as wastewater and sewage disposal, flotation slimes, digested scum, lime slurry in waste treatment plants. They are also used in food processing to move potato and starch pulp, mash, food paste, tomato paste, food wastes, and dairy waste and whey in milk processing. They are used in the paper industry to pump lime slurry and adhesives. They are used in the plastic recycling industry to pump plastic and Styrofoam cups. They are also used in the construction indnstiy for pumping bentonite siurries. clay slurries, and mud. 

One of the important parts in potato starch technology is utilization of secondary products such as extracted potato pulp (pomace) and the soluble constituents of the protein water (fruit water). Potato pulp, after dewatered mechanically to a dry matter content of about 25%, is dried in drum or flash dryer using combustion gases at 500-600°C. The dry product of relatively high-feeding value contains about 13% of water. Also fruit water after various processes with centrifuging at the end can be dried by one of the above-mentioned methods or by sonic or TorusDisc drying [11]. 

The low-in starch content wet pulp may be shipped as such for fodder or worked up for - potato pulp feed. 

Polymers from Fats and Oils Polymere aus Fetten und Olen Polyploidy Polyploidie Polysaccharides Polysaccharide Pommade Pommade Poppy Mohn, Schlafmohn Potato Kartoffel Potato Protein Karoffelprotein Potato Pulp Feed KartoffelpUipe Potato Starch Production Kartoffelstarke-gewinnung... 

Kakao Cocoa Kakaobutter Cocoa Butter Kampfer Camphor Kanamycine Kanamycines Karaya Gummi Karaya Gum Karnaubapalme Carnauba Karnaubawachs Carnauba Wax Karoffelprotein Potato Protein Kartoffel Potato Kartoffelpiilpe Potato Pulp Feed Kartoffelstarkegewinnung Potato Starch Production... 

Kovacova (1990) describes a method for the batch drying of fruit and vegetable pulp in a fluidized bed in which carrier particles (variously crystalline and caster sugar, dried skim milk, potato and wheat starch, apple powder, semolina or oat flakes), pre-moistened to a solids content of between 55% and 76%, are fed to a preheated fluidized bed and sprayed with the pulp to be dried. A product with a narrow particle size distribution and a uniform pulp content is claimed. Specific foods for which fluidized bed granulation has been used include potato puree (Zelenskaya and Filipenko, 1989) and granulated dried apple (Haida et al, 1994). 

The bulk of potato tubers is made up of parenchyma cells that have thin, non-lignified, primary cell walls (Reeve et al., 1971 Bush et al, 1999, 2001 Parker et al., 2001). Unless stated to the contrary, potato cell walls refers to parenchyma cell walls. These walls and their component polysaccharides are important for a number of reasons they form part of the total intake of dietary fiber, influence the texture of cooked potato tubers and form much of the waste pulp that is produced in large amounts by the potato starch industry when starch is isolated. The pulp is usually used as cattle feed, but potentially could be processed in a variety of ways to increase its value (Mayer, 1998). For example, the whole cell-wall residues could be used as afood ingredient to alter food texture and to increase its dietary-fiber content, or cell-wall polysaccharides could be extracted and used in a similar way or for various industrial applications (Turquois et al., 1999 Dufresne et al, 2000 Harris and Smith, 2006 Kaack et al., 2006). 

The detailed procedure of starch isolation from potato tubers is as follows. Potato tubers (10 kg) are washed, peeled, sliced into 2-3 cm cubes, and soaked in distilled water containing 20 mM sodium bisulfite and 10 mM citric acid for 2 hours to prevent darkening. The cubes are then disintegrated using a centrifugal juice extractor, the pulp is suspended in 6 L of distilled water and passed through the extractor again, and starch milk is collected. The milk is allowed to sediment for 30 minutes the supernatant and the suspended solids are removed by decantation, and the... 

J.P. Perdrizet, FrP 1132039 (1957) CA 53, 18487 (1959) claims highly brisant, small-diameter, low-cost, shock-resistant LOX cartridges are made with fuels obtained from pulp residue from the extraction of starch from potatoes, and sugar from beets... 

Cationic starches are widely used as wet-end additives in the pulp and paper industry to enhance starch and filler retention during papermaking. Use of cationic starches increases paper strength and decreases biological oxygen demand (BOD) of paper mill effluent. Presently only cationic corn and potato starches are used by Canadian paper mills. The degree of substitution (DS) of normal, waxy, high-amylose barley... 

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