Enzymatic treatments cellulase

Table XI. Change in Pore Volume of Linters Powder Samples by Enzymatic Treatment (Cellulase G, 68 hr/40°C, 1%)...

Antony and Chandra (1999) estimated the mineral content of a white (CO 9) and a brown (CO 13) variety of . coracana grain. The total content in mg/100 g of Ca was 365 and 383, P was 210 and 240, Zn was 2.2 and 2.23, Mn was 7.44 and 5.84, respectively. Ragi flour was either fermented or treated with a combination of hemicellulase and cellulase prior to fermentation. The amount of acid extractable minerals especially calcium increased in the brown variety after a combination of autofermentation and enzymatic treatment. 

The effects of cellulase enzymes on cotton substrates that were dyed with various classes of dyes have been reported. It was found that vat dyes do not inhibit cellulase activity on cotton, and hydrolysis of the substrate with subsequent color removal transpires. In contrast, cellulase activity on cotton was inhibited by the presence of some direct and reactive dyes. There is the probability that a dye-enzyme complex is formed with less activity than that of the free enzyme. The increased weight loss from enzymatic treatment on untreated cellulose is associated with a slight reduction in dye sorption, and this may be because of a reduction of amorphous regions in cellulose where dye molecules are usually sorbed. Cellulase activity is more prominent on mercerized cotton than on unmercerized cotton. This is because mercerization is associated with a decrease in the crystallinity of the cellulosic structure [540]. One major negative aspect of cellulase treatment of cotton fabric is the strength loss associated with the approximately 3-5% weight reduction under normal treating conditions. Of course, this is to be expected after cellulose is hydrolyzed. Future research efforts may lead to processes in which enzymes... 

The outer layer is composed mainly of hemicellulose and pectic substance and the inner layer is rich in cellulose, so that the outer layer can be easily eliminated with CSE, and both layers with the mixture of CSE and cellulase. In the course of enzymatic treatment, soluble matter... 

Csiszar, E., Szakacs., G., and Rusznak, I. (1998). Combining traditional cotton scouring with cellulase enzymatic treatment, 68(3),... 

Corn husk Alkalization Enzymatic treatment Bleaching Pidpzyme Cellulase Spectrophotometry 12... 

Corn husk Alkalization Enzymatic treatment Sulfonation Sodium sulfite Ethylenediamine Pulpzyme Cellulase Tensile strength, color, light and heat resistance 20... 

Cellulases. Alkaline enzymes are also important in the textile industry. For biopolishing denims, alkaline cellulases are preferred since they control back-staining and 3deld good denim finishing properties. When acidic and neutral cellulases (from H. insolens and T. reesei, respectively) were used for the enzymatic treatment, back-staining of the white yam of denim fabric was observed (24). 

Li et al., [20] studied the enzymatic treatment for aqueous extraction of the total phenolic contents of five eitrus peels (Yen Ben lemon, Meyer lemon, grapefinit, mandarin and orange). The highest reeovery using Celluzyme MX (cellulase) in the enzyme-assisted extraction process was up to 65.5% (about 87.9% of the solvent extraction). 

Marigold petals are rich sources of xanthophyUs, mainly lutein esters. To increase the coloring power, chemical extraction of the colorant from flower meal is performed or a new enzymatic procedure is applied. It was shown that treatment with cellulases or mixed saprophyte microorganisms or solid state fermentation improved the xanthophyll extraction yield. ... 

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