Effects of Water Quality on Reeling Performance and Raw Silk Quality of Silk worm (Br-Urboshi)Cocoons: Water of Bholahat Region

摘要

For many years raw silk output of Bholahat area of Nawabgaj district has been becoming the highest. At present it is about 70% of Bangladesh's total raw silk production. It would be helpful to know the influence of water on raw silk for achieving better results. An attempt has been made in this study to assess the effect of htese chemical constituents of available natural water collected from different sources in the traditional silk reeling areas of Bholanat on the reeling performance and quality.Four different water samples of Bholahat region together with distilled water were used to reel silk cocoons of the rece(Br-Upboshi)and their effects on raw silk and silk quality were analysed.The results obtained and discussed herein suggest that water from bore-well and river water which contain relatively low hardness(total,temporay and per-manent hardness)and low pH values with acceptable limit for silk reeling produced significantly more raw silk and better reelability,renditta,medium size deviation,tenacity and better winding breaks and cohesion.