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Biosoftening of coir fiber using selected microorganisms

机译：使用选定的微生物对椰壳纤维进行生物软化

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Coir fiber belongs to the group of hard structural fibers obtained from coconut husk. As lignin is the main constituent of coir responsible for its stiffness, microbes that selectively remove lignin without loss of appreciable amounts of cellulose are extremely attractive in biosoftening. Five isolated strains were compared with known strains of bacteria and fungi. The raw fiber treated with Pseudomonas putida and Phanerocheate chrysosporium produced better softened fiber at 30 ± 2℃ and neutral pH. FeSO_4 and humic acid were found to be the best inducers for P. chrysosporium and P. putida, respectively, while sucrose and dextrose were the best C-sources for both. Biosoftening of unretted coir fibers was more advantageous than the retted fibers. Unlike the weak chemically softened fiber, microbial treatment produced soft, whiter fibers having better tensile strength and elongation (44.6-44.8%) properties. Scanning electron microscopy photos showed the mycelia penetrating the pores of the fiber, removing the tylose plug and degrading lignin.
机译：椰壳纤维属于从椰子壳获得的硬质结构纤维。由于木质素是导致其刚度的椰壳纤维的主要成分，因此选择性去除木质素而不损失大量纤维素的微生物在生物软化方面极具吸引力。将五个分离的菌株与已知的细菌和真菌菌株进行了比较。用恶臭假单胞菌和Phanerocheate chrysosporium处理过的原纤维在30±2℃和中性pH下产生了更好的软化纤维。发现FeSO_4和腐殖酸分别是金孢假单胞菌和恶臭假单胞菌的最佳诱导剂，而蔗糖和右旋糖是两者的最佳C源。未退缩的椰壳纤维的生物软化比退缩的纤维更有利。与弱化学软化纤维不同，微生物处理产生的软白纤维具有更好的拉伸强度和伸长率（44.6-44.8％）。扫描电子显微镜照片显示菌丝体穿透了纤维的孔，去除了丝状糖堵塞物并降解了木质素。

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