Exploitation of bacterial pectinolytic strains for improvement of hemp water retting

Tamburini, Elena; León, Alicia Gordillo; Perito, Brunella; Candilo, M. Di; Mastromei, Giorgio

doi:10.1007/s10681-004-4754-y

Cited by 33 publications

(16 citation statements)

References 26 publications

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“…showed cellusolytic activities. These results were in confirmation with the finding of Tamburini et al, (2004) who reported the presence of cellusolytic activities in the Pectinolytic strains that are Bacillus subtilis. Zhang et al, (2000) also found low cellulolytic activities (0.04-0.17 U/cm 3 ) of some strains used in degumming of ramie fibres.…”

Section: Identifi Cation Of Selected Retting Microbessupporting

confidence: 91%

Biochemical characterization and Biolog based identification of efficient Jute retting bacterial isolates from retting water

Ray

Das²,

Ali³

et al. 2015

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Jute is considered as one of the cheapest natural fibers after cotton in terms of its production and uses. Retting is the most important post-harvest operation to yield high-quality jute fiber and is solely carried out by various types of retting microorganisms. The present study was undertaken to screen and characterize the efficient retting microbes isolated from retting water based on their enzymatic activity followed by biolog based identification of those efficient microbes. These isolates were characterized on the basis of qualitative and quantitative estimation of Pectinolytic, Xylanase, and Cellulase activity. Out of 40 isolated strains only 3 were finally identified as efficient jute retting microorganism having high Pectinolytic and Xylanase activity coupled with less Cellulase activity. These identified three microorganisms may provide a suitable means to develop a new retting technique, especially under water stress condition.

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Section: Identifi Cation Of Selected Retting Microbessupporting

confidence: 91%

Biochemical characterization and Biolog based identification of efficient Jute retting bacterial isolates from retting water

Ray

Das²,

Ali³

et al. 2015

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“…This feature is important for strain selection because a prolonged treatment of hemp stems with cellulosolytic bacteria could otherwise result in loss of fibre strength, because of a direct attack to cellulosic fibres. On the contrary, all the pectinolytic anaerobic strains characterized so far showed a cellulosolytic activity (Tamburini et al. 2004).…”

Section: Resultsmentioning

confidence: 99%

Effects of selected pectinolytic bacterial strains on water-retting of hemp and fibre properties

Candilo

Bonatti

Guidetti

et al. 2010

Journal of Applied Microbiology

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Aims: To study the effect of selected bacterial strains on hemp water-retting and properties of retted fibre. Methods and Results: The trials were performed in laboratory tanks. The traditional water-retting process, without inoculum addition, was compared to a process modified by inoculating water tanks with two selected pectinolytic bacteria: the anaerobic strain Clostridium sp. L1/6 and the aerobic strain Bacillus sp. ROO40B. Six different incubation times were compared. Half the fibre obtained from each tank was combed. Micromorphological analyses were performed by scanning electron microscopy on uncombed and combed fibres. Moreover, organoleptic and chemical analyses of uncombed fibres were performed. Conclusions: The inoculum, besides speeding up the process, significantly improved the fibre quality. The fibre was not damaged by mechanical hackling, thanks to the good retting level obtained by the addition of selected strains, differently to what happened with the traditionally retted fibre. The best fibre quality was obtained after 3-4 days of retting with the addition of the bacterial inoculum. Significance and Impact of the Study: Retting is the major limitation to an efficient production of high-quality hemp fibres. The water-retting process and fibre quality were substantially improved by simultaneously inoculating water tanks with two selected pectinolytic strains

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“…An advisable feature of retting strains is the absence of cellulosolytic activity. An aerobic strain with no cellulosolytic activity was identified Tamburini et al (2004). El-Borhamy (2003) found that retting with water change every 48 hours gave the tallest fiber while, retting in streaming water gave the highest values of fiber fineness, fiber strength, fiber yield per fed.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF HARVESTING DATES AND RETTING METHODS ON THE YIELD AND QUALITY OF THREE FLAX GENOTYPES(Linum usitatissimum l.)

Borhamy¹,

Eldaiem²,

Ahmed³

2015

Journal of Plant Production

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Two field experiments were conducted at the Experimental Farm, Sakha Agric. Res. Station , Sakha, kafrelsheikh, Egypt during the two successive winter seasons of 2012/2013 and 2013/2014 to study the effect of four harvesting dates i.e 120,130,140 and 150 days after sowing and retting methods (Retting in water change every 24 hours and Still water retting) on yield and its quality yield components of three flax Genotypes (Sakha 3, Ilona and S. 541 /D/10) The experimental design was split plot with four replicates where in field experiment, the three genotypes were distributed in the main plots and harvesting dates were allocated in the sub plots, while after harvesting the twelve combinations between the genotypes and harvesting were distributed in the main plot while the two retting treatments were allocated in the sub plots. The results revealed high significant differences among the flax genotypes in straw yield and its components. Sakha 3 cultivar registered the greatest values of technical length, straw yield/plant and straw yield/fed., sakha 3 and Ilona cultivars gave the highest values in fiber strength, fiber fineness, fiber percent, fiber yield /plant and fiber yield /fed. while S. 541 /D/10 genotype was the highest in stem diameter, fruiting zone length, number of capsules/plant, number of seeds /plant, 1000-seed weight, seed yield / fed. and seed oil content. The results revealed that the harvesting flax plants at 140 DAS gave significantly increases in technical length and fruiting zone length in both seasons. While, the same effect was in seed yield /plant& straw yield /fed. in the second season and in both seed yield /fed. and straw yield/ plant in first season, on the other hand the traits of fiber length, fiber strength, fiber fineness, fiber percent, fiber yield /plant and fiber yield /fed. recorded the highest significantly values at harvesting date 140 DAS in both seasons and did not significantly differed with harvesting date 150 DAS in fiber length in both seasons and in fiber yield /fed. in the second seasons. However, delayed harvesting date to 150 DAS showed the highest values in number of capsules/plant, number of seed /plant, 1000-seed weight (g), seed yield /plant, seed yield /fed. straw yeild/fed. seed oil content in both seasons and straw yield/plant in the second season. While, The harvest date at 130 DAS recorded the highest values in stem diameter in both seasons compared with other harvesting dates. The interaction between the genotypes and harvesting dates had a significant effect in technical length, fiber strength, fiber fineness, fiber percent, fiber yield /plant, fiber yield /fed. fruiting zone length, stem diameter, number of capsules/plant, number of seed /plant, 1000-seed weight, seed yield /plant , seed yield /fed., straw yield/plant straw yield/fed. and seed oil content in both seasons. The twelve combinations between genotypes of flax and harvesting dates recorded significant differences in fiber fineness, fiber length, fiber strength, fiber percent, fiber yield /plant a...

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Exploitation of bacterial pectinolytic strains for improvement of hemp water retting

Cited by 33 publications

References 26 publications

Biochemical characterization and Biolog based identification of efficient Jute retting bacterial isolates from retting water

Biochemical characterization and Biolog based identification of efficient Jute retting bacterial isolates from retting water

Effects of selected pectinolytic bacterial strains on water-retting of hemp and fibre properties

EFFECT OF HARVESTING DATES AND RETTING METHODS ON THE YIELD AND QUALITY OF THREE FLAX GENOTYPES(Linum usitatissimum l.)

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