Investigation on Reducing Chromium Quantity in Chromium Containing Wastes of Leather Industry Using Oyster Mushroom (Pleurotus ostreatus)

Content: In the leather industry, the shaved wastes after the wet blue phase, which are exposed by the shaving process, are one of the substances that cause environmental pollution for the leather industry. Most of the time, these wastes can be buried and may cause serious environmental pollution. In this study, wet blue shaved wastes to be mineralized to chromium and so prevented oxidise to Cr (VI) by using oyster mushrooms (Pleurotus ostreatus) .Wet blue shaved wastes were mixed with 0.5%, 1%, 1.5% and 2% doses into the growth medium. After the oyster mushroom growth, the consuming of chromium from the growth media and chromium content that uptaken by the mushroom were investigated with in House method / ICP-MS. Take-Away: -Oyster mushroom degrade the waste -Oyster mushroom can uptake chromium -Oyster mushroom can grow medium where contens chromiu

Bazı uçucuyağların ıslatma-yumuşatma işleminde bakterisit olarak kullanım özelliklerinin araştırılması

Bu çalışmada, Origanum onites (kekik), Origanum sp. (1), Origanum sp. (2), Foeniculum vulgare (rezene) ve Myrtus communis (yaban mersini) uçucu yağlarının ıslatma-yumuşatma işlentileri sırasında gelişen bakterilere karşı bakterisit olarak kullanılabilirlikleri incelenmiştir. Çalışmada kontrol maksadıyla ticari içerikli bakterisit de kullanılmıştır. Yapılan çalışmalar sonucunda kekik uçucu yağının diğer uçucu yağlara ve bakteriside nazaran daha kuvvetli bir antibakteriyel etkiye sahip olduğu tespit edilmiştir. Çalışmadan elde edilen bulgulara göre kekik uçucu yağları ve yaban mersini uçucu yağı bakterisit olarak kullanılabilir.and the oil of Foeniculum vulgare (fennel) and Mrytus communis were tested for their antimicrobial activity in parallel with 7-25 % phenol and 4-chloro-3-methyl as commercial bactericides commonly used in leather industry. The results showed that three essential oils of oregano had much stronger bactericidal activity than that of the commercial ones including the fennel oil. These findings pointed out that the oregano essential oils and myrtle oil could be used as bactericidal agents in leather industry

Krom tabaklannıış derilerde bazı Penicillium türlerinin sebep olduğu yapısal değişikliklerin belirlenmesinde Raman Spektroskopisi nasıl kullanılabilir?

Flaman spectroscopy was used to eIucidate structural changes of wet blue sheep leather due to the growth of fungi belonging to the genus Penicillium. After chrome tanning while leathers are still wet, they are prone to be affected by Penicillium, resulting in degradation of leather structure. In this study, different fungi species -Penicillium glabrum, Penicillium commune, Penicillium echinilatum, Penicillium brevicompactum and Penicillium chrysogenum- were inoculated on wet blues and let grown for 14 months. After 14 months, changes on wet blue structure were investigated with Raman spectroscopy. The results showed that chrome-tanned sheep leathers are affected to different degrees by various fungi from the Penicillium.Flaman spektroskopisi, wet blue koyun derilerinde bazı Penicillium cinsine ait mantarların gelişiminin sebep olduğu yapısal değişimlerini aydınlatmak için kullanılmıştır. Krom tabaklamadan sonra deriler henüz ıslakken, derilerde yapısal bozulmaya neden olan Penicillium genusuna ait küf gelişimi görülebilir. Bu çalışmada; farklı fungus türleri Penicillium glabrum, Penicillium commune, Penicillium echinilatum, Penicillium brevicompactum ve Penicillium chrysogenum wet blue deri/ere inokule edilmiş ve 14 ay boyunca gelişmeye bırakılmıştır. 14 ay sonunda wet blue derilerin yapılarında meydana gelen değişimler Flaman spektroskopisi ile incelenmiştir. Sonuçlar, krom tabak/anmış koyun derilerinin değişik Penicillium fungus/arından farklı derecelerde etkilendiğini göstermiştir

A Research on the Use of Aluminum Sulphate in Parchment Production and its Effects on Ageing and Color

Content: In this study, different proportions 2.5%, 5%, 10% of aluminum sulfate were used as tanning agents during parchment production. The research was carried out on goat skin and also there were no usage of any tanning agents as control groups. Finished leathers have been exposed to ageing conditions. Before and after ageing color measurements on all finished leathers have been conducted with Konica Minolta CM-3600d brand spectrophotometer. The impacts of the aluminum sulfate utilized in the research on light fastness were also inspected by using an ATLAS-XENOTEST ALPHA+ test instrument. Visible whitening on the color of parchment was observeded when tanning process with aluminum sulphate was performed. Take-Away: -Aluminum sulfate has tanning effects -Aluminium gave white color to the parchment -Aluminum sulfate changed collagen structure

A Research on the Use of Aluminum Sulphate in Parchment Production and its Effects on Ageing and Color

Content: In this study, different proportions 2.5%, 5%, 10% of aluminum sulfate were used as tanning agents during parchment production. The research was carried out on goat skin and also there were no usage of any tanning agents as control groups. Finished leathers have been exposed to ageing conditions. Before and after ageing color measurements on all finished leathers have been conducted with Konica Minolta CM-3600d brand spectrophotometer. The impacts of the aluminum sulfate utilized in the research on light fastness were also inspected by using an ATLAS-XENOTEST ALPHA+ test instrument. Visible whitening on the color of parchment was observeded when tanning process with aluminum sulphate was performed. Take-Away: -Aluminum sulfate has tanning effects -Aluminium gave white color to the parchment -Aluminum sulfate changed collagen structure