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Collection of Retting Effluents from Different Jute Growing Districts and Study of Their Retting Properties

Dr. Firoza Akhter
Principal Scientific Officer
Post Harvest processing Department, Fibre Quality Improvement Division, BJRI, Dhaka-1207.

Md. Mozibur Rahman
Chief Scientific Officer
Head of Fibre Quality Improvement Division, BJRI, Dhaka-1207.

M. Younus Ali
Senior Scientific Officer (cc)
Post Harvest processing Department, Fibre Quality Improvement Division, BJRI, Dhaka-1207.

Abstract/ Executive Summary:

The experiment was undertaken to determine the microbial activity of retting effluents collected from different jute growing districts of Bangladesh. The experiment was carried out in the laboratory of Fibre Quality Improvement Division taking seventeen retting effluent samples from five stations of BJRI during the period from April 2010 to December 2013. The shortest retting period 19 days was found using the retting effluent collected from Monirampur and Nashipur locations. The moderate retting period 21 days was recorded while using the effluent collected from Faridpur and the highest retting time 23 days was observed using retting effluents collected from Manikgonj. The sample collected from Faridpur produced cream colour of fibre which was the best in appearance. In the period of 2011-2012, retting effluents were collected from different jute growing districts and their retting activities were studied with jute variety CVL-1 and BJRI tossa pat-5. The retting effluents of some locations having good retting activities and micro organisms were found enriched with retting bacteria. The population of bacteria was found maximum at Faridpur sadar both in aerobic (98 x 105/ml) and anaerobic (99 x 105/ml) conditions. The second highest population was found at Monirampur (87 x 105/ml) in aerobic condition and the least amount of population (80 x 105/ml) in aerobic condition was found in central station of BJRI. In the period of 2010-2011, The bacteria isolated from Rangpur sadar and Rangpur station showed better and promising results than all other locations under this study. Bacteria isolated from the former were retted jute stem 12 days and bacteria isolated from Rangpur station retted jute stem within 11 days. Bacteria isolated from central station also showed good retting activities and retted jute stem in 12 days.

Keywords: Jute, Retting effluents, Jute growing districts, Retting properties

Location: All stations BJRI. Finally data are processed in the Laboratory of Fibre Quality Improvement Division.

Start Date: 00-00-2011

End Date: 00-00-2012

Program Area: Pest Management

Commodity: Jute

Objectives:

To determine the microbial activity of retting effluents of different jute growing districts of Bangladesh

Methodology:

During the period of 2011-2012 retting effluents were collected from different jute growing districts e.g. Jessore, Dinajpur, Faridpur, Manikganj and brought to the laboratory of Fibre Quality Improvement Division and then preserved immediately in the Refrigerator. The 250 gms of green jute stems were cut and retted with 600 ml tap water adding 150 ml of retting effluent in 1 litre conical flask. The flasks were capped with cotton plugs and covered with papers. The experiment was conducted under laboratory condition. During retting the microbes secreted enzymes on the bark of jute stem and hence the barks were loosened enough and fibres were separated. After retted the jute plants, it was observed that which effluent is more efficient as well as retted the plants at lower time. Then the selected effluent was analyzed critically for collecting retting organisms and preserved for further use.

Source of Information: Annual report 2010-2011, 2011-2012, 2012-2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Fifteen thousand only

Total Budget (Tk.) : 15000/-

Achievement/Findings:

In the period of 2012-2013, the shortest retting period 19 days was found using the retting effluent collected from Monirampur and Nashipur locations. The moderate retting period 21 days was recorded while using the effluent collected from Faridpur and the highest retting time 23 days was observed using retting effluents collected from Manikgonj. The sample collected from Faridpur produced cream colour of fibre which was the best in appearance. In the period of 2011-2012, the population of bacteria was found maximum at Faridpur sadar both in aerobic (98 x 105/ml) and anaerobic (99 x 105/ml) conditions. The second highest population was found at Monirampur (87 x 105/ml) in aerobic condition and the least amount of population (80 x 105/ml) in aerobic condition was found in central station of BJRI. In the period of 2010-2011, from the results it was observed that bacteria isolated from Rangpur sadar and Rangpur station showed better and promising results than all other locations under this study. Bacteria isolated from the former were retted jute stem in 12 days and bacteria isolated from Rangpur station retted jute stem in 11 days. Bacteria isolated from central station also showed good retting activities, retted jute stem in 12 days.

Knowledge Management: Report/Proceedings, Booklet/Leaflet