Ind. This also reduces environmental pollution to a great extent. Biochemical investigations on jute retting. Debsarma, G. D. 1946. This is a preview of subscription content, log in to check access. This process is faster than the traditional methods of retting and is already taking over the fibre-extraction industry and has been a go-to option for textile producers. Correspondence to Retting microbes consume the non-fibrous cementing materials mainly pectin and hemicellulose. different types of retting processes used for bast plants such as hemp, jute, flax, and kenaf, with an emphasis on kenaf. Cult.9: 451. Jour, agric. Retting is a preferential rotting process to separate the fibre from woody stem without damaging the fibre cellulose. After this retting process is over, the non-fibrous matter of jute is scraped off in a process called "stripping", and then the fibers are separated by beating the stem with a paddle. Part of Springer Nature. Isolation of micro-organisms from jute retting pit, their characterization, and their action on jute stem. Jute fibres are composed primarily of the plant materials cellulose (major component of plant fibre) and lignin (major components of wood fibre). Jute fiber develops in the phloem or bast region of the stem of the plants; in transverse sections of the stem. The jute plant, a native of the Indian subcontinent, is a herbaceous annual growing to a height of around 10 to 12 feet with a central cylindrical stem, and 4- to 6-inch long light green leaves and yellow flowers. • Harvested jute bundles are arranged radially up to three layers keeping base of the plants towards periphery of the pond. Jalaluddin, M. Further observations on the bacteriology of jute retting. The fibers are extracted first by retting. The jute fibers are located beneath the bark, primarily concentrated near the woody, central … A process called retting is used to remove the non-fibrous material from the stem and skin of the jute stalk. Eventually, the Bangladeshi government set up the Bangladesh Jute Mills Corporation. Jute is one of the important natural fibers after cotton in terms of cultivation and usage. Jute Fiber comes from the outer skin of the jute plant called the ribbon. Retting in a tank was appreciably hastened by using the same water for successive batches of jute. Aerobic bacteria involved in the retting of jute. In conventional retting, a huge biomass undergoes decomposition in stagnant water, so retting causes environmental pollution. It also comes from the stem. Here Is A List Of Some Enzymes That Helps In Retting Of Hemp. In ribbon retting, ribbons are stripped out mechanically from the stem of mature jute plants, coiled and allowed to ret under water. The two retting types are ribbon retting and stem retting. We use cookies to help provide and enhance our service and tailor content and ads. This process removes the non-fibrous material from the stem and the skin of the jute plant. Most of the defects arising from conventional retting could be overcome by ribbon retting. Then comes the defoliation stage where the leaves are removed. 1968. 2. The process of retting consists of bundling stems of the jute and immersing these in water that is slowly running. Most of the defects in fiber are … So, ribbon retting is a great promise to produce high quality jute fibre in one hand and a more eco-friendly measure on the other. Jour. Infinita Biotech. Department of Botany, University of Dacca, Pakistan, You can also search for this author in The traditional method is to ret the jute stems for about 15–18 days and extract the fibre manually after retting. plant retting of jute and mesta has certain demerits. After the liberation of Bangladesh from Pakistan in 1971, most of the Pakistani owned jute mills were taken over by the government of Bangladesh. Pakist. CAS  Ahmad, M. 1963. Learn more about Institutional subscriptions. 1965. https://doi.org/10.1007/BF02860592, Over 10 million scientific documents at your fingertips, Not logged in After harvesting the jute bundles are kept in the field for 2 -3 days to allow leaf shedding. Traditional retting of jute takes 15 to 20 days and requires large quantity of water which should be preferably slow-flowing water. Cultivation is dependent on the climate, season, and soil. Ali, M. M. 1958. PubMed Google Scholar. Insitu Jute Retting contd. China also has a dominating place in jute cultivation. Economic Botany Jute—an important cash crop of eastern India is traditionally grown for extraction of fibre by a natural microbial process known as retting. See more. Chaudhury, S. D. 1953. CAS  The increment was 1.1 to 4 times higher over the WHO safe limit (0.05 mg L − 1) for India and Bangladesh. Next, the plant is put through what is called retting. Gently flowing, fairly deep, clear and soft water is ideal for retting. Salle, A. J. The fibres can be extracted by either biological or chemical retting … Excellent fibre separation with ethylenediamine tetramethylene phosphonic acid (EDTMPA) has been reported [ 166 ]. In ribbon retting, ribbons are stripped out mechanically from the stem of mature jute plants, coiled and allowed to ret under water. Jute is long, soft and shiny, with a length of 1 to 4 m and a diameter of from 17 to 20 microns. They probably enter stems over the whole surface through stomata, as well as through cut ends and leaf scars, after immersion for retting. Ret definition, to soak in water or expose to moisture, as flax or hemp, to facilitate the removal of the fiber from the woody tissue by partial rotting. Copyright © 2003 Published by Elsevier B.V. https://doi.org/10.1016/S0926-6690(02)00097-3. Tax calculation will be finalised during checkout. Microbiological studies of some sub-Antarctic soils. Dead fibres: Due to over retting in moist condition, the fibre becomes dull, lose strength and becomes inferior for spinning. • Under ground water was then added to the retting tank and the jute • Microbial consortium with a cfu (108 to 1010) was then applied to the jute bundles in the pond. Retting: For fibre extraction, the jute stems are retted in water for 3-4 days, after harvesting and defoliation of plants in the fields. Bact.26(2): 117–126. Retting in a tank was appreciably hastened by using the same water for successive batches of jute. Ditches, tanks and pools are also used for retting. Article  appl. Present address: Crop Research Institute for Jute and Allied Fibre, ICAR, Barackpore, India. Under laboratory conditions the shortest period of retting, three days, was achieved withBacillus polymyxa at a temperature of 40°. 4. Econ Bot 24, 137–141 (1970). Jour. Harvesting & Retting = Jute crop can be harvested between 100 – 120 days. Climate – Relative humidity between 40-90% and temperature between 17° C and 41°C, along with well distributed rainfall over 1200 mm is ideal for cultivation and growth of jute.. Sci. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Jalaluddin, M. 1965. The stalks, over 3 meters in height, are gathered by hand and softened in water. Retting softens the stalks and makes it possible to separate the fibrous material from the unusable material by hand. Ribbon retting reduces time of normal retting by 4–5 days. Microbia1: 34–43. Ponds in villages are not allowed for jute retting in general as the water turns dark and foul-smelling making it unfit for domestic use and pisciculture, breeds mosquitoes and creates environmental problem. 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