A NOVEL EXTRACELLULAR KERATINASE FROM EXIGUOBACTERIUM SP. DG1: ENZYME PRODUCTION AND DEHAIRING APPLICATION
Journal Title: Revista de Pielărie Încălţăminte - Year 2017, Vol 17, Issue 4
Abstract
In this research, we determined the optimum conditions for production of extracellular keratinase in Exiguobacterium sp DG1, and showed the possibility of application of the keratinase for sheep skin dehairing process. Strain DG1 showed the highest productivity of the keratinase activity during the growth in sheep hair meal (SHM) medium (pH 8) containing 10 g/L of SHM with aerobic incubation at 27°C for 48 hours. Moreover, dehairing process using an extracellular keratinase from strain DG1 decreased several index parameters in the treatment wastes. For example, in the treatment wastes using keratinase from strain DG1, COD and BOD values decreased drastically (82.1% and 73.7% respectively), compared to chemical dehairing process, and sulfide content was very low (less than 0.01 mg/L). These facts indicate that the extracellular keratinase from strain DG1 possesses a great potential of application for green leather tanning industry.
Authors and Affiliations
Jajang GUMILAR, Lies Mira YUSIATI, Ambar PERTIWININGRUM, Tomoyuki NAKAGAWA, Suharjono TRIATMOJO
Keywords
Related Articles
- EP ID EP533165
- DOI 10.24264/lfj.17.4.4
- Views 118
- Downloads 0
A NOVEL EXTRACELLULAR KERATINASE FROM EXIGUOBACTERIUM SP. DG1: ENZYME PRODUCTION AND DEHAIRING APPLICATION
In this research, we determined the optimum conditions for production of extracellular keratinase in Exiguobacterium sp DG1, and showed the possibility of application of the keratinase for sheep skin dehairing process. S...
EFFECTS OF STRESS STATE WHILE DRIED ON LEATHER MECHANICAL PROPERTIES
After being chrome tanned, the wet blue was retanned, neutralized, and fatliquored with Coripol MK to get different leather samples. Under the condition of ambient drying and vacuum drying, different forces were applied...
THE EFFECT OF BACKPACK LOAD ON MOTION COORDINATION OF SCHOOLCHILDREN
The aim of this study was to explore the influence of the load of a backpack on the coordination of motion of healthy children aged 7 to 12. 100 healthy schoolchildren were recruited and they were quantified with the nor...
INVESTIGATION AND EVALUATION OF THE QUALITY FEATURES RELATED TO COMFORT OF CASUAL SHOES IN BANGLADESHI LEADING RETAIL BRANDS USING PHYSICAL AND CHEMICAL STANDARD TEST METHODS
Several materials and chemicals are being used during manufacturing processes of shoes which are responsible for a good quality product. Nowadays it has been coming out of the current market of Bangladesh that leading re...
STATISTICAL-MATHEMATICAL PROCESSING OF ANTHROPOMETRIC FOOT PARAMETERS AND ESTABLISHING SIMPLE AND MULTIPLE CORRELATIONS. PART 1: STATISTICAL ANALYSIS OF FOOT SIZE PARAMETERS
The purpose of this study is to evaluate anthropometric parameters resulting from measurements by their statistical and mathematical processing. The study was conducted on a sample of 300 male subjects from three geograp...