One‐step process for desizing and bleaching of cotton fabrics using the combination of amylase and glucose oxidase enzymes

Saravanan, D.; Sivasaravanan, S.; Prabhu, M. Sudharshan; Vasanthi, N. S.; Raja, K.; Das, Arunava; Ramachandran, Tholkappiyan

doi:10.1002/app.34838

Cited by 26 publications

(12 citation statements)

References 11 publications

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“…The sizing agent has to be removed before dyeing and finishing by the process called desizing. For this desizing purpose, generally α‐amylase enzyme has been used preferably over the chemical‐desizing agents , and there are only a few reports that have dealt with the desizing application of α‐amylase . The present investigation intensively explores the application of amylase enzyme in desizing the cotton fabrics and differs from other reports by comparatively analyzing the enzymes obtained through synthetic and economical media.…”

Section: Introductionmentioning

confidence: 99%

Amylase enzyme from Bacillus subtilis S8‐18: A potential desizing agent from the marine environment

Kalpana

Sindhulakshmi

Pandian

2013

Biotech and App Biochem

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The present study is aimed at developing an economical medium for the production of α-amylase from Bacillus subtilis S8-18, a marine sediment isolate from Palk Bay, with various agricultural by-products that are cheap and rich in starch. These products include wheat bran, wheat husk, rice bran, rice husk, and potato peel and are used to replace soluble starch present in the Luria Bertani (LB) broth (synthetic medium). The rice husk was found to be the best to influence enzyme production significantly (61,186 IU mL⁻¹) when compared with the yield of 30,026 IU mL⁻¹ obtained by commercial starch. Hence, LB broth containing rice husk was considered an economical medium. In addition, the effect of various nutritional and physiological factors on enzyme production was also investigated. Furthermore, the desizing efficiency of α-amylases produced by synthetic and economical media was evaluated through various assays like reducing sugar estimation, weight loss assay, drop absorbency assay, scanning electron microscopy, and Fourier transform infrared analyses. In addition, a commercial α-amylase from B. subtilis was also used in desizing analyses for comparative purposes. It revealed that the α-amylase from the economical medium was as effective in desizing the cotton fabrics as that of the commercial enzyme and much superior to the enzyme produced through the synthetic medium.

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Section: Introductionmentioning

confidence: 99%

Amylase enzyme from Bacillus subtilis S8‐18: A potential desizing agent from the marine environment

Kalpana

Sindhulakshmi

Pandian

2013

Biotech and App Biochem

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“…to adopt cost effective practices to reduce the use of scarce resources like water and energy. Hence, the logical approach to combine desizing, scouring and bleaching operations to save energy and water was put forward by many researchers [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A facile energy and water-conserving process for cotton dyeing

Harane

Mehra

Tayade

et al. 2014

Int J Energy Environ Eng

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Nowadays, all research efforts in the field of wet processing of textiles are directed towards shortening and simplification of the processing sequence. To minimise water and energy consumption, it has become necessary to combine several textile processing stages to reduce the number of operations or shorten the process time. An attempt was made to combine the pre-treatment and dyeing processes with optimal quantities of textile auxiliaries in single bath. In this process, individual stages of pre-treatment like desizing, scouring and bleaching followed by dyeing using direct dyes were carried out in a single bath without the usual intermediate washings. This process was carried out without replacing the liquor bath until the end of dyeing. An attempt was also made to dye a woven fabric at different stages, viz., grey, desizing and scouring. These efforts were made to conserve water and energy required for that particular pre-treatment process. The depth of dyeing and the colour fastness properties of all these dyed fabrics were then compared with a bleached fabric which was dyed with conventional method. The properties were at par with the conventional method. Moreover, the combined process saved 83.1 % water, 88.6 % energy (thermal) and 79.3 % time than the conventional processes. Thus, the process has been shown to be ecological, economical and energy conserving.

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“…Complete removal of the size coating after weaving is important to ensure optimum results in the subsequent processes, in which the fabrics is generally scoured, bleached, and dyed (Dong & Lu, 2008). Enzymatic desizing has been employed using α-amylase to hydrolyze the starch size (Saravanan et al, 2012). This method produced little wastewater and is friendly to the environment.…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

“…α-amylases are widely distributed in plants, animals, and microorganisms and shows varying action patterns depending on the resource (Hagenimana, Vezina, & Simard, 1992;Swamy & Seenayya, 1996). The enzyme has several important industrial applications such as production of ethanol and high fructose corn syrup, detergents, desizing of textiles, and modified starches (Saravanan et al, 2012;Vihinen & Mantsiila, 1989).…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Effect of additives on mesophilic α-amylase and its application in the desizing of cotton fabrics

Wang

et al. 2015

The Journal of The Textile Institute

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An investigation was carried out on thermal stability of α-amylase. The influence of various additives (calcium acetate, sodium lactate, L-histidine, and water-soluble chitosan) on the stability of α-amylase was studied. Results showed the inactivation behavior of α-amylase with or without additives all followed the first-order kinetics. All additives (Ca2+, sodium lactate, L-histidine, and water-soluble chitosan) displayed good stabilizing effect on α-amylase lower than 80°C, and only water-soluble chitosan had an efficient stabilizing effect on α-amylase when the treatment temperature exceeds 80°C. All additives improved the catalytic activity of α-amylase at 70-90°C, and the appearance of water-soluble chitosan increased the catalytic activity of α-amylase at 90°C sharply. A desizing ratio of 68.42% was obtained by treating the cotton fabrics in the buffer solution at 100°C without α-amylase. To obtain a desizing ratio exceed 95% when fabrics were treated at 100°C for 10 min, the addition of water-soluble chitosan saves 2/3 α-amylase dosage. Moreover, water-soluble chitosan showed a further improvement in desizing effect than the additive of calcium acetate.

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One‐step process for desizing and bleaching of cotton fabrics using the combination of amylase and glucose oxidase enzymes

Cited by 26 publications

References 11 publications

Amylase enzyme from Bacillus subtilis S8‐18: A potential desizing agent from the marine environment

Amylase enzyme from Bacillus subtilis S8‐18: A potential desizing agent from the marine environment

A facile energy and water-conserving process for cotton dyeing

Effect of additives on mesophilic α-amylase and its application in the desizing of cotton fabrics

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