Silk degumming using microwave irradiation as an environmentally friendly surface modification method

Mahmoodi, Niyaz Mohammad; Moghimi, Fereshteh; Arami, Mokhtar; Mazaheri, Firoozmehr

doi:10.1007/s12221-010-0234-2

Cited by 111 publications

(66 citation statements)

References 18 publications

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“…Silk, also known as the 'queen of fabrics', is a composite material with two fibroin filaments surrounded by a cementing layer of sericin (Mahmoodi et al 2010;More et al 2013). Silk processing from cocoons to the final finished clothing and articles involves several steps which include reeling, weaving, degumming, dyeing or printing and finishing (Zahn 1993).…”

Section: Proteases For Silk Degummingmentioning

confidence: 99%

“…Proteases are used in pharmaceutical industry (Kumar et al 2015), food industry for peptide synthesis (Kumar and Bhalla 2005), leather industry for dehairing (Pillai et al 2011;Singh and Bajaj 2017), photographic industry for silver recovery (Joshi and Satyanarayana 2013), detergent industry as an additive for detergent formulation (Giri et al 2011) and in processing of keratin residues (Harde et al 2011). In addition, the proteases are also used for other applications such as contact lens cleaning (Pawar et al 2009), biofilm removal (Leslie 2011), isolation of nucleic acid (Motyan et al 2013), pest control (Joshi and Satyanarayana 2013), degumming of silk (Mahmoodi et al 2010) and selective delignification of hemp (Khan 2013).…”

Section: Introductionmentioning

confidence: 99%

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Potential application spectrum of microbial proteases for clean and green industrial production

Singh

Bajaj

2017

Energ. Ecol. Environ.

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Enzymes are the cornerstones of metabolism and constitute the fundamental basis for existence of life. However, recently enzymes are being implicated in diverse industrial processes because of their specific and fast action for efficient bioconversion of substrate to product, and their capability to save raw materials, energy and chemicals for various manufacturing processes. Enzymes are considered as environment-friendly (green) chemicals that may potentially help replacing completely or reducing the usage of hazardous chemicals for industrial processes, thus promising sustainable production and manufacturing. Among various industrial enzymes microbial proteases dominate the world enzyme market due to their multifaceted application potential in varied bioindustries like food, pharmaceutical, textile, photographic, leather and detergent. Promising applications of proteases in agricultural sector for instance may include biocontrol of pests, degumming of silk, selective delignification of hemp and wool processing. However, for successful industrial applications the proteases must be robust enough to suit the process conditions which are generally hostile. Proteases intended for industrial applications must have activity and stability over wide range of temperature and pH extremes for prolonged time periods and even in the presence of various potential enzyme inhibitors. Of various microbial proteases those from Bacillus spp. have got special significance because the latter are known for their ability to produce sturdy enzymes that might have suitability for industrial process conditions. The current article presents an interpretive summary of the recent developments on application potential of proteases for various industries.

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Section: Proteases For Silk Degummingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential application spectrum of microbial proteases for clean and green industrial production

Singh

Bajaj

2017

Energ. Ecol. Environ.

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“…Traditionally, degumming is carried out by soaking the silk fabric in a solution of 3-5 g/l Marseilles (olive oil soap) for 6 h at 40-50 °C and then boiled off for 2-6 h in a solution of 8-10 g/l soap at 90-95 °C [18]. It produces effluent and degumming by chemical-free microwave treatment, alkaline electrolyzed water, enzymes, organic acid, plasma treatment, and ultrasound have been investigated as an eco-friendly degumming process [19][20][21][22][23]. Electrolyzed water at pH 11.5 achieved 25 % removal of sericin, but caused tensile strength loss due degradation of fiber.…”

Section: Silk Processingmentioning

confidence: 99%

Sustainable Processing of Luxury Textiles

Hassan

2015

Handbook of Sustainable Luxury Textiles and Fashion

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Luxury textile industries are in a big dilemma. On one hand, they need to uplift their brand value, and on the other hand they need to support sustainability as the consumers of luxury textiles are rich and literate. They are particularly more concerned about the sustainability issues. Like those of other textile industries, the luxury textile industries are under intense consumer as well as stakeholder scrutiny. The demands of consumers are not only limited to the marketed products being safe, but also that they are processed sustainably under safe and humane conditions. The sustainability issues are based on four main pillars: environmental, social, ethical and economic. The recent recession showed that weakening of social and economic pillars affect the environmental and ethical pillars. When recession starts to have an effect, the environmental and ethical pillars become neglected. In this chapter, what type of fibers are used in luxury textiles, what is meant by 'sustainability' and why it is important in luxury textile industry, how it is measured and the future trends to make luxury textile processing sustainable are discussed.

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“…Proteases have been applied in various industrial processes such as degumming of silk, leather, pharmaceutical, food, detergent, processing of keratin residues, contact lens cleansing, biofilm removal, selective delignification of hemp, isolation of nucleic acid, photography and pest control (Kumar & Bhalla, 2005;Pawar, R., Zambare, V., Barve, S., & Paratkar, G., 2009;Mahmoodi, N.M,, Moghimi, F., Arami, M., & Mazaheri, F., 2010;Giri et al, 2011;Harde, S.M., Bajaj, I.B., & Singhal, R.S., 2011;Leslie, 2011;Joshi & Satyanarayana, 2013;Khan, 2013;Motyan, J.A., Toth, F., & Tozser, J., 2013;Kumar, D., & Bhalla, T.C., 2015;Singh & Bajaj, 2016;Suwannaphan, S., Fufeungsombut, E., Promboon, A., & Chim-Anage, P., 2017). More recently proteases have been applied to produce high quality food supplement from hydrolyzed protein (Moreno et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Identification of Protease-Producing Bacteria Isolated from Banyuwedang, Bali, and Characterization of its Protease

Zilda

Fawzya

Uria

2018

Squalen Bull. Marine Fisheries Postharvest Biotech.

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Proteases or peptidases is known as a largest group of hydrolytic enzymes and have been applied in various industries such as food, pharmacy, leather, detergent and waste treatment. Although they are also produced by plants and animals, microbes remain the main source of proteases in the world market which mostly derived from Bacillus sp. Aims of this research were to identify isolate BII-1 and study its protease. Analysis of 16Sr RNA sequencing showed the identity of BII-1 as Bacillus subtilis (99% similarity with the same species in GenBank). It was found that protease from BII-1 exhibited optimal temperature and pH of 50 o C and 8-9, respectively. It was activated by Li 2+ , Na 2+ , Mg 2+ and K + . The degenerated primer for protease gene was designed, and a partial protease gene was amplified from BII-1. The sequencing result showed that this amplified gene shared 100 and 99% similarity with those from Geobacillus thermophiles and Bacillus subtilis in the GenBank, respectively.

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Silk degumming using microwave irradiation as an environmentally friendly surface modification method

Cited by 111 publications

References 18 publications

Potential application spectrum of microbial proteases for clean and green industrial production

Potential application spectrum of microbial proteases for clean and green industrial production

Sustainable Processing of Luxury Textiles

Identification of Protease-Producing Bacteria Isolated from Banyuwedang, Bali, and Characterization of its Protease

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