TỔNG HỢP ĐIỆN HÓA DUNG DỊCH PEROXOCACBONIC VÀ TRIỂN VỌNG ỨNG DỤNG CỦA NÓ CHO MỤC ĐÍCH KHỬ TRÙNG

SUMMARYSTEL-PEROX is the latest model among the series of well-known STEL devices which produce electrochemically activated (ECA) solutions widely used for disinfection in many countries over world, including Vietnam. STEL-PEROX devices stand out as the most effective and environmentally-friendly means against microbes by generating activeted percarbonic acid from highly diluted sodium carbonate solution. Physico-chemical and functional characteristics of ECA solutions generated on a STEL-PEROX device designed and set up in Institute of Envonmental Technology-VAST using Russian electrolytic moduls FEM-3 have been evaluated. It was shown that this device  produces actually non-toxic solutions but highly effective disinfectants that destroy all forms of pathogenous microorganisms, including Salmonella, E-coli, Listeria, fungi etc, in very short contact times.  The experimental data showed that the low general mineralization of the anolyte PEROX provides a high stability of the molecular complexes which are hydrated, transforming into electroneutral aquacomplexes. That means that the lower the concentration of ions in solution, the greater the stability of the aquacomplexes, hence the longer the bactericidal activity of the anolyte PEROX.SUMMARYSTEL-PEROX is the latest model among the series of well-known STEL devices which produce electrochemically activated (ECA) solutions widely used for disinfection in many countries over world, including Vietnam. STEL-PEROX devices stand out as the most effective and environmentally-friendly means against microbes by generating activeted percarbonic acid from highly diluted sodium carbonate solution. Physico-chemical and functional characteristics of ECA solutions generated on a STEL-PEROX device designed and set up in Institute of Envonmental Technology-VAST using Russian electrolytic moduls FEM-3 have been evaluated. It was shown that this device  produces actually non-toxic solutions but highly effective disinfectants that destroy all forms of pathogenous microorganisms, including Salmonella, E-coli, Listeria, fungi etc, in very short contact times.  The experimental data showed that the low general mineralization of the anolyte PEROX provides a high stability of the molecular complexes which are hydrated, transforming into electroneutral aquacomplexes. That means that the lower the concentration of ions in solution, the greater the stability of the aquacomplexes, hence the longer the bactericidal activity of the anolyte PEROX

NGHIÊN CỨU ĐIỀU CHẾ VẬT LIỆU ĐIALĐEHYT XENLULO BẰNG PHƯƠNG PHÁP OXY HÓA PERIODAT VÀ CÁC TÍNH CHẤT CƠ LÍ CỦA NÓ

PREPARATION OF DIALDEHYDE CELLULOSE BY USING PERIODATE OXIDATION METHOD AND ITS MECHANICO – PHYSICAL PROPERTIES Cellulosic fabric after being modified into dialdehyte cellulose is able to covalently bind bioactive enzyme which can be used for wound  treatment. This report presents some results of our studies on the modification process of medical fabric materials made of from natural vietnamese cotton and physical-mechanical properties of the modified product. Fabric cellulose was modified into dialdehyde cellulose by using periodate oxidation method. In these studies, the oxidation levels of the cellulose are in a range of 1.7- 25%. At 0.05 M periodic acid,  oxidation level of the cellulose reached plateau maximum value at a module of 20 after 18 hours of reaction. Several physical properties of the materials have been measured and assessed for appropriateness for usage in manufacturing wound dressings

NGHIÊN CỨU TÁC DỤNG CỦA BĂNG NANO BẠC LÊN QUÁ TRÌNH ĐIỀU TRỊ VẾT THƯƠNG BỎNG

Silver was known as a strongest antimicrobial element in the nature, moreover in the nano-sized form it can modulate the wound healing process by developing pro-healing or inhibiting pro-inflammatory cytokines, resulting in accelerated wound recovery and improved cosmetic appearence. This report represents some results of using nanosilver-coated wound dressings for therapeutic treatment of burns. The dressings were manufactured by immersing non-woven fabric material into a nanosilver solution of concentration of 500 mg/l with an average size of 20 – 25 nm, which was produced by aqueous molecular solution method. The healing effect of the tested dressing was studied through the comparison with silver sulfadiazine-coated one. The experimental data obtained showed that nanosilver-coated dressing heals burns with accelerated healing and without scars, much better than silver sulfadiazine-coated dressing

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