A rapid process of ramie bio-degumming by <i>Pectobacterium</i> sp. CXJZU-120

Liu, Zhengchu; Duan, Shengwen; Sun, Qingxiang; Peng, Yu; Feng, Xiaoli; Zheng, Ke; Hu, Zhenxiu; Zhang, Yunxiong

doi:10.1177/0040517512444338

Cited by 31 publications

(21 citation statements)

References 9 publications

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“…B. cereus achieved the same results as the ramie degumming technology currently used in the industry (such as CXJZ-120). The results were close to the effects of applying that bacterial strain for the degumming of kenaf (Chiliveri et al, 2016;Liu et al, 2012). Compared with other degumming bacterial strains (Basu et al, 2009;Zheng et al, 2001), B. cereus has a shorter degumming cycle (10 h) and ideal gum removal capabilities (residual gum rate is less than 6 %) and produces fiber of good quality (breaking strength is more than 850 cN dtex −1…”

Section: Discussionsupporting

confidence: 65%

“…The reducing sugar content then decreased rapidly at 2-6 h, thereby suggesting that the growth and reproduction of bacterial strains consumed a large amount of reducing sugars in the ferby hn1-1 was the largest, reaching 2.4 (Table 1); therefore, hn1-1 was selected as the best pectinase producer. The hn1-1 colony was tested for extracellular pectinase production in selective culture medium without addition of agar, and it revealed pectinase activity 143.53 IU mL ) measured under the same conditions, hn1-1 secreted high-yield of pectin-degrading enzyme, indicating a good ability of bast fibers bio-degumming (Liu et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

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Screening a bacterium and its effect on the biological degumming of ramie and kenaf

Cheng

Wang

Feng

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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ABSTRACT:Biological degumming is an eco-friendly, efficient, high-quality and low-cost method that has become the leading bast fiber degumming technology. However, bacterial strains with short degumming cycles, high gum removal rates and small fiber damage are few. To screen high quality microbial resources with bast-fiber biological degumming function, soil samples were collected from a continuously cultivated banana plantation and then used to be enriched by ramie and kenaf materials in turn. A selective pectin-degrading medium was used to screen for excellent bacteria. A dominant bacterial strain was identified by phenotypic and genotypic characteristics, and its biological degumming effects on ramie and kenaf were verified by a comprehensive evaluation system. Results showed that seven bacterial strains secreting pectinase were obtained and the largest hydrolysis circle with a diameter ratio H/C of 2.4 was produced by the bacterial strain hn1-1, which was preliminarily identified as the Bacillus cereus by colony morphological characteristics and 16S rDNA sequence (GenBank accession number: KX013542) cluster analysis. The fiber production of ramie and kenaf degummed by B. cereus hn1-1 for 10 h were 72 % and 76 %, the residual gum rates were 4 % and 5 %, respectively. These values satisfied the textile industry requirement of < 6 % residual gum rate. Therefore, an effective biological degumming bacterium, B. cereus, was identified using a pectin-hydrolysis selective medium through a simple, economical, and time-saving method. Furthermore, the biological degumming technology by B. cereus for ramie and kenaf had a short cycle, ideal removal gum rate, and high-quality and productive fiber output.

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Section: Discussionsupporting

confidence: 65%

Section: Resultsmentioning

confidence: 99%

Screening a bacterium and its effect on the biological degumming of ramie and kenaf

Cheng

Wang

Feng

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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“…A study [54] revealed that over 90 % of the gum in raw ramie could be removed only with Pectobacterium sp. CXJZU-120 in 6 h. The rapid process was not only suitable for the extraction of ramie fibers from different grades of raw material and retaining the inherent morphological structures and textile properties, but also could reduce production cost up to 20.5 %, raise resource utilization by more than 50 %, and reduce pollution charge by more than 80 % compared with traditional chemical degumming.…”

Section: Degumming Of Ramiementioning

confidence: 99%

Sustainable Textile Wet Processing: Applications of Enzymes

Choudhury

2014

Textile Science and Clothing Technology

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Enzymes are a sustainable alternative to the harsh toxic chemicals in the textile industry. As enzymes operate in moderate conditions of temperature and pH, energy consumption is reduced, thereby reducing greenhouse gas emissions. Both water consumption and waste generation during textile manufacturing are also minimized by enzyme use. As the enzymes are very specific in their actions, minimum by-products are generated. The risks to humans, wildlife, and the environment are minimized. Enzymes can be utilized in several steps of textile processing namely desizing, scouring, bleaching, and biopolishing of cotton, degumming of silk, bleaching and shrinkproofing of wool, biostoning (of denim), and for treatment of textile effluents.

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“…Hemp fiber mainly consists of cellulose, hemicellulose and lignin, of which cellulose and hemicellulose are polysaccharides, while lignin is composed of complex polymers containing aromatic groups. 1 The extraction or the degumming process of hemp fiber from its raw bast lies at the basis of its further applications, thus, the chemical, 2 mechanical 3 and bio-enzymatic 4 routes have already been widely employed in hemp fiber extraction. Among these methods, waterbath heating is commonly applied to enhance the degumming reaction.…”

Section: Introductionmentioning

confidence: 99%

Influence of Non-Thermal Microwave Effects on Hemp Fiber Obtaned by Microwave Assisted Degumming

Tian¹,

Qu²,

Zhu³

et al. 2019

Cellulose Chem. Technol.

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Microwave-assisted heating degumming was successfully employed in hemp fiber extraction. This route was selected owing to the fact that it is a fast, green, high-efficiency and low-cost method. The mechanism of action was investigated and the results were compared with those obtained by the traditional water-heating method. The fibers treated by the two procedures were examined by X-ray photoelectron spectroscopy (XPS). Specifically, their C 1s spectra and the corresponding carbon and oxygen atomic concentration ratios (O/C) were analyzed. The results indicated that the O/C ratio gradually increases from 0.35 for untreated hemp to 0.49 for the microwave treated fiber, indicating that the lignin, which is mainly composed of the carbon component, was to a great extent removed from the fiber surface. It was concluded that the non-thermal effects of microwave radiation could accelerate the degumming process and its efficiency, as well as modify the surface composition and the structure of hemp fiber, compared with the conventional waterbath heating method.

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A rapid process of ramie bio-degumming by Pectobacterium sp. CXJZU-120

Cited by 31 publications

References 9 publications

Screening a bacterium and its effect on the biological degumming of ramie and kenaf

Screening a bacterium and its effect on the biological degumming of ramie and kenaf

Sustainable Textile Wet Processing: Applications of Enzymes

Influence of Non-Thermal Microwave Effects on Hemp Fiber Obtaned by Microwave Assisted Degumming

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