Extraction and Optimization of Natural Dye from Madhuca Latifolia Plant Bark Used for Coloration of Eri Silk Yarn

Abstract

AbstractEri silk is one of the four varieties of silk produced in India. Recently eri culture was introduced in Andhra Pradesh due to the availability of host plants. Eri silk fabrics are suitable in the fields of apparel, furnishing and home textiles. Due to the market potential for eco-friendly fabrics, it became mandatory to develop eco processing for eri silk. Eri is a wild silk that cannot be reeled, due to the piercing of cocoons by the moths. Hence, it is used for the production of spun yarn only. The importance of eri silk cannot be undervalued as a fine textile fibre. It has got certain outstanding textile properties and is unique in many respects [7]. The bark of Madhuca latifolia source was selected for the study as this source was not optimized for dyeing purposes. Alum, stannous chloride, ferrous sulphate, tartaric acid and chitin were selected for the study [8]. A colour flex spectrophotometer was used to assess the colour strength of the liquids as well as dyed yarns. The colour fading and staining due to exposure to serviceable conditions such as sunlight, washing, crocking and perspiration were also assessed using a colour flex spectrophotometer. Madhuca latifolia dyed samples exhibited colours ranging from pinkish brown, light brown to dark brown colours.KeywordsNatural dyes Madhuca latifolia MordantEri silkColour strengthFastness