The optimized and efficient process used at all stages allows -8% process time, -13% energy consumption, -39% chemical usage and -11% CO 2 emission compared to a benchmark reactive dye system. The system itself comes with an optimized application process with up to -25% process time, -41% water consumption, -45% energy consumption, -45% chemical usage and -49% CO 2 emission.ĬOLOR VIBE, a system for nylon sportswear to maintain color vibrancy, time after time, wash after wash. The system offers a PFC-free* soil release benefit as well as an antimicrobial effect for freshness and odor management. OUTDOOR & ACTIVE WEARĪrchroma offers 17 systems that can be used in for outdoor and active wear applications, in particular:įAST SPORT x HYDRY, an ultimate sportswear system that keeps polyester colorful, dry and fresh for longer.
All systems can be found on the Archroma System Selector. The solution systems and innovations presented by Archroma have all been selected for their compliance with “The Archroma Way to a Sustainable World: Safe, efficient, enhanced, it’s our nature”.Īll cost and resource savings are substantiated using the ONE WAY Impact Calculator, a proprietary process simulation & calculation tool designed to provide an accurate estimate of the process costs, resource utilization, effluent discharge quality, and CO 2 emissions of production processes and systems.Īt Intertextile, visitors will be able to discover the 70+ systems recently developed by Archroma along the principles of The Archroma Way to help them create value in their textile applications and markets. Our results indicate that the ester derivatives of alkannin are potential candidates of anti-MRSA and anti-VRE agents with antitumor activity.Archroma, a global leader in specialty chemicals towards sustainable solutions, will be at Intertextile Shanghai Apparel Fabrics – Autumn Edition (Intertextile), to present its latest innovations and system solutions aimed to help textile manufacturers in China with optimized productivity and/or value creation in their markets. Their cytotoxicity was also evaluated on selected cancer cell lines, and they expressed their activity in the range 0.6-5.4 microg/mL (CD(50)). None of these compounds were active against Gram-negative bacteria tested. Aromatic ester derivatives were also synthesized for antimicrobial activity comparison. The derivatives 3-9 were also active against vancomycin-resistant Enterococcus faecium (F935) and vancomycin-resistant Enterococcus faecalis (CKU-17) with MICs similar to those with MRSA. In a time-kill assay, the bactericidal activity against MRSA was achieved as rapidly as 2 h.
Anti-MRSA activity of derivatives was bactericidal with minimum bactericidal concentration (MBC)/MIC < or = 2. The derivatives 3-9 showed stronger anti-MRSA activity than alkannin or shikonin (MIC = 6.25 microg/mL).
The stereochemistry of alpha-methylbutyryl alkannin (8) is revealed for the first time, and the antimicrobial activity of 8 was compared with its corresponding diastereomer (9). Bioassay-directed fractionation of extract of Arnebia euchroma led to the isolation of alkannin (1), shikonin (2), and their derivatives (3-8) as the active principles against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE).
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