Comparison of acid degumming and enzymatic degumming process forSilybum marianumseed oil

2013 ◽  
Vol 93 (11) ◽  
pp. 2822-2828 ◽  
Author(s):  
Lin Mei ◽  
Liang Wang ◽  
Qianqian Li ◽  
Jiangnan Yu ◽  
Ximing Xu
2021 ◽  
Author(s):  
Per Nielsen ◽  
Jakob Larsen ◽  
Soeren Engelsen ◽  
Klavs Sorensen

2006 ◽  
Vol 83 (7) ◽  
pp. 653-658 ◽  
Author(s):  
Bo Yang ◽  
Yong-Hua Wang ◽  
Ji-Guo Yang

2008 ◽  
Vol 85 (5) ◽  
pp. 421-425 ◽  
Author(s):  
Bo Yang ◽  
Rong Zhou ◽  
Ji-Guo Yang ◽  
Yong-Hua Wang ◽  
Wei-Fei Wang

2021 ◽  
Vol 15 (3) ◽  
pp. 3
Author(s):  
DEWI NANDYAWATI ◽  
DEA INDRIANI ASTUTI ◽  
NIKNIK NURHAYATI ◽  
ASEP RISWOKO ◽  
IS HELIANTI

Ramie fiber is a potential raw material to substitute imported raw materials such as cotton. Due to its higher hemicellulose content, ramie fiber required hydrolysis in a process called degumming. Enzymatic degumming is environmentally friendly compared to traditional process which using chemicals. Alkalithermophilic xylanase have high ability in hemicellulose hydrolysis. The production of xylanase was conducted by submerged fermentation of Bacillus halodurans CM1 in 20L bioreactor using Mamo and corncob medium with optimum conditions at 50°C, pH 9, 150 RPM and 1 vvm. The optimum specific activity of xylanase measured by Bailey method at 70°C and pH 9 is 475.41 U/mg. Xylanase was stable at 50°C, pH 9 and relatively stable to K+, Na2+, Co2+ and Ca2+ metal ions and Triton-X, Saba dan Tween-80 surfactants. Degumming process was carried out by immersing ramie fibers in formulated degumming solution with vlot 1:20 at 50°C, 150 RPM and 180 minutes. The enzymatic degumming process may substitute or reduce the use of chemicals due to its significant effect on ramie fiber quality. Enzymatic and chemical degumming process reduce the weight of Ramie Fiber to 7.23 %, and 7.72 %, slightly higher than enzymatic degumming 7.15%. Enzymatic degumming maintains tensile strength at 27.51 %. Whiteness index enhanced to 2.99% enzymatically and 3.49% chemically. Keywords: Bacillus halodurans CM1, enzymatic degumming, ramie fiber, textile industry, thermoalkaliphilic xylanase


2014 ◽  
Vol 21 (1) ◽  
pp. 142-148 ◽  
Author(s):  
Xiaofei Jiang ◽  
Ming Chang ◽  
Xiaosan Wang ◽  
Qingzhe Jin ◽  
Xingguo Wang

LWT ◽  
2014 ◽  
Vol 58 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Daniela L. Lamas ◽  
Guillermo H. Crapiste ◽  
Diana T. Constenla

LWT ◽  
2008 ◽  
Vol 41 (10) ◽  
pp. 1892-1898 ◽  
Author(s):  
Mehran Jahani ◽  
M. Alizadeh ◽  
M. Pirozifard ◽  
A. Qudsevali

TAPPI Journal ◽  
2010 ◽  
Vol 9 (2) ◽  
pp. 23-29 ◽  
Author(s):  
Wei-ming Wang ◽  
Zai-sheng Cai ◽  
Jian-yong Yu

Degumming of pre-chlorite treated jute fiber was studied in this paper. The effects of sodium hydroxide concentration, treatment time, temperature, sodium silicate concentration, fiber-to-liquor ratio, penetrating agent TF-107B concentration, and degumming agent TF-125A concentration were the process conditions examined. With respect to gum decomposition, fineness and mechanical properties, sodium hydroxide concentration, sodium silicate concentration, and treatment time were found to be the most important parameters. An orthogonal L9(34) experiment designed to optimize the conditions for degumming resulted in the selection of the following procedure: sodium hydroxide of 12g/L, sodium silicate of 3g/L, TF-107B of 2g/L, TF-125A of 2g/L, treatment time of 105 min, temperature of 100°C and fiber to liquor ratio of 1:20. The effect of the above degumming process on the removal of impurities was also examined and the results showed that degumming was an effective method for removing impurities, especially hemicellulose.


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