Year: 2022 | Month: September | Volume 67 | Issue 4

Softening of Barky Root Cuttings of Jute by Pectinolytic Bacterial Strains for Better Spinability and Industrial Uses

Atul Singha Avijit Das Manjunatha B.S. Manik Bhowmick Deb Prasad Ray A.K. Thakur Biplab Saha Ruby Das Robin Das Amit Das D.B. Shakyawar


Jute is a very important commercial fibre and cash crop in India. India is the largest producer of jute in the World. The jute fibre available in the market sometimes contains a lot of barky portions. The barky portions of jute cause serious processing difficulties in the industry. As a result barky part is either cut off before processing or the jute reeds used for product development like thick yarn & rugetc. The cut-off portions of jute are called root cuttings and are generally considered as waste material. Forty six bacterial isolates were screened having pectinolytic activity. Two best strains were selected based on the potency index. The bacterial consortium within 1:1 ratio had effectively removed (75-88%) the barky root portion of jute fibre in both 1:10 (10 days) and 1:20 (7 days) liquor ratio. The treated fibre recorded good bundle strength (17-18cN) and spinnable to make 12lb/spy yarn having a tenacity of 7.88 cN/tex. The treatment time was reduced to 5 days (50% reduction) with mechanically softened fibre. Mechanical softening can be used to omit the media supplement of 0.5% Di-ammonium phosphate.


  • Barky root in jute is a serious issue for the processing of raw jute.
  • High bark/ root content in jute fibre often reasons for the rejection of the lower portion of the fibre before the processing in Mills.
  • A bacterial consortium developed at ICAR-NINFET (AS11 & AS20 in 1:1 ratio) had effectively delineated issue for treatment of the barky root portion of jute fibre.
  • The treated fibre recorded good bundle strength and was spinnable to make yarn with good tenacity.

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