Impact of conventional retting of jute (Corchorus spp.) on the environmental quality of water: a case study

Majumdar, B.; Chattopadhyay, Lipi; Barai, Shrestha; Saha, A. R.; Sarkar, S.; Mazumdar, S.P.; Saha, R.; Jha, S. K.

doi:10.1007/s10661-019-7589-7

Cited by 16 publications

(25 citation statements)

References 16 publications

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“…At initial stage of retting, a sharp decrease in the pH of retting water might have resulted from release of organic acids namely butyric acid, acetic and lactic acid during microbial metabolism of sugars, pectins and other gummy materials (Das et al, 2011;Majumdar et al, 2019). The stability in pH of retting water from day 10 to day 14 of retting was related to negligible release of organic acids due to lack of degradable substrates, which has helped in the stabilization of pH of retting liquor.…”

Section: Resultsmentioning

confidence: 99%

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An insight into the sequential changes in enzymatic activities during retting of jute (Corchorus spp. L.).

Majumdar¹,

Saha²,

Sarkar³

et al. 2021

JEB

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Aim: To study the dynamics of enzymes involved in biochemical process of jute (Corchorus spp.) retting with and without microbial retting consortium. Methodology: Two large scale retting trials were conducted with and without microbial retting consortium in triplicate. The retting water samples were collected every day at 24 hrs interval from both the trials. Polygalcturonase (PG), pectin lyase (PNL) and xylanase activities along with the pH were measured from the collected retting water samples following standard procedure. Fibre quality parameters were also studied from the resultant fibre obtained from both the retting trials. Results: There was a sharp decrease in pH of retting liquor by 1.35 units and that of pectin lyase activity by 97.9 Uml-1 within 24 hrs of inoculation of microbial retting consortium. Thereafter, higher pectin lyase (123.1 Uml-1), polygalacturonase (3.56 Iuml-1) and xylanase (0.818 IUml-1) activities were recorded during middle stage of retting. The enzyme activities were lower and non-significant at last stage of retting (11-14 days). The completion of retting without microbial consortium took longer time due to lower enzymatic activities as compared to microbial consortium mediated retting. Interpretation: The PG, PNL and xylanase enzymes released by the microbial consortium during retting of jute helped in faster biodegradation of pectin and xylan compared to control retting. Hence, the pre retting treatment of jute with microbial consortium is suggested for quick retting.

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Section: Resultsmentioning

confidence: 99%

“…Journal of Environmental Biology, May 2021B OD, COD and nutrients contents including cfu of pectin, cellulose, lignin and xylan degraders but with a reduction in pH were recorded in post-retting water in comparison to pre-retting water (Majumdar et al, 2019). Delignification by using lignin degrading bacteria of Bacillus spp.…”

Section: O N L I N E C O P ÿmentioning

confidence: 95%

An insight into the sequential changes in enzymatic activities during retting of jute (Corchorus spp. L.).

Majumdar¹,

Saha²,

Sarkar³

et al. 2021

JEB

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“…Electrical conductivity is a measure of total salt concentration in water. µScm -1 to 396 µScm -1 belongs to the recommended range (Majumdar et al, 2019) and can be utilized to allow a rough assessment of the total dissolved solids (mgL -1 ) and found TDS half of EC (µScm -1 ) (Stone and Thomforde, 2004). TDS in water primarily shows the presence of different minerals and improves the ionic trades in water (Huq and Alam, 2005).…”

Section: Parametermentioning

confidence: 99%

“…The conventional whole stem retting contaminated the water bodies as well as the environment by biomass decomposition which hampers the quality of jute fiber (Husain, 2011). In water-based jute retting, the quality of fiber and water depends on diverse parameters like the sum of TDS (lower content of salt, iron and calcium), pH value, temperature, hardness (soft water), EC, color, and odor of water (Roy and Hassan, 2016;Majumdar et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of conventional retting of jute on the quality of water and jute fiber

et al. 2022

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Jute is a natural fiber also known as golden fiber in Bangladesh. Jute fiber is commonly extracted from the plant after immersion in water bodies. The traditional jute retting process harms the quality of jute fiber as well as water where jute plants were immersed as it decomposes bio-mass and hampers different water quality indicating parameters. In this study water samples were collected from different ponds and ditches at Muktagacha Upazilla, Mymensingh, Bangladesh in July 2020. Samples were collected from jute pre- and post-retting water bodies. The study was conducted to monitor the effect of jute retting on various physicochemical and microbiological parameters like- pH, total dissolved solids (TDS), electrical conductivity (EC), and dissolved oxygen (DO). All parameters were measured at the central laboratory of Bangladesh Agricultural University using a Multiparameter waterproof meter with a probe. To examine water quality, water samples were collected three times from five particular water bodies of stagnant waters, and the freshwater of the canal and pond. Water quality parameters of pre and post-retting jute water were found as pH 6.42~7.02 and 6.10~5.59, TDS 18~81 mgL-1and 103~183 mgL-1, DO 2.3~2.4 mgL-1and 0.8~0.9 mgL-1, and EC 36~163 µScm-1and 222~396 µScm-1, respectively. A comparison was made with the standard values of water quality parameters and found notable differences with the Department of Environment standards of Bangladesh. Another observation was also made to determine whether the retting water can influence fiber quality or not. Observed results indicated that a low level of pH and DO in jute retted water in a pond may not be suitable for fish cultivation. On the other hand, higher content of TDS and EC in post jute retting water was found responsible for the poor quality of jute fiber. Progressive Agriculture 32 (2): 151-161, 2021

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“…The co-existence of cheaters and producers is highly organized but releases intermediate-level enzymes, which ultimately lingers the process and, consequently, over retting, under retting yields inconsistence low-quality fibers (Fernando et al, 2019). The selective microbial applications in the bio retting process arise because of these tumbling efficiencies; however, this process encompasses aquatic ecosystems pollution and in recent years faced severe water scarcity problems from open sources of water bodies (Majumdar et al, 2019;Zawani et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Isolation of Alkalophilic Pectinolytic Bacteria and their Bio Retting Effect on Kenaf Fiber Compositions

Hossain¹,

Siddiquee²,

Subbiah³

2021

alinteri

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Retting is the most limiting process of high-quality cellulosic kenaf bast fiber production which facilitating the separation of useable fiber from the plants' cell wall matrix. Existing traditional water retting approach confronts ineptitude and eutrophication related complications. Aiming to enhance the kenaf bio-retting process, sixty-seven alkalophilic bacterial colonies were isolated from paddy land soil sediments and kenaf retting water. These isolates were subsequently screened, of that two isolates were selected based on hyper qualitative and quantitative pectinolytic enzymatic measures. 16s rDNA gene sequence analysis revealed that both two strains were closely related to Bacillus pumilus species and designated as KRB56 and KRB22. These strains were applied in augmented non-sterile kenaf tank retting to investigate their kenaf retting efficiency and yielded fiber were analyzed for chemical compositions. Results revealed that, stains KRB56 and KRB22 significantly improve the retting process by degradation of 82.78% and 75.28% non-cellulosic gums, respectively comparing with uninoculated treatment niche (62.12%). Based on un retted raw kenaf fiber maximum fiber bundle weight was reported in MTW with 16.04% material losses, while the SW, and FW treatments showed 24.38%, and 21.03% material losses, respectively. These bacterial treated fiber samples showed thinner, smooth, and cleaner fibers surface morphology by SEM indicates sufficient non cellulosic gums (NCGs) removal comparing with URKF. Moreover, yielded fibers were examined for chemical composition, FTIR, XRD test. Results revealed that compare to un retted and un inoculated kenaf fiber, bacterial treated kenaf fiber increases cellulose portions, and their crystallinity index increases 35.50-41.30 % due to sufficient NCGs removal. This study's findings indicate that isolated alkalophilic bacterial strains KRB56 and KRB22 were effectively to be used as kenaf bio retting agents to produce quality kenaf fiber.

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Impact of conventional retting of jute (Corchorus spp.) on the environmental quality of water: a case study

Cited by 16 publications

References 16 publications

An insight into the sequential changes in enzymatic activities during retting of jute (Corchorus spp. L.).

An insight into the sequential changes in enzymatic activities during retting of jute (Corchorus spp. L.).

Effect of conventional retting of jute on the quality of water and jute fiber

Isolation of Alkalophilic Pectinolytic Bacteria and their Bio Retting Effect on Kenaf Fiber Compositions

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