Most of the hard-to-degrade keratin containing substrates like feathers or animal hairs is either discarded or incinerated, resulting in energy consumption and environmental pollution. Thus, an innovative eco-friendly method to deal with these wastes is urgently needed. Microbial degradation of keratin by keratinases has gained biotechnological interest in applications and represents a great op...

Due to the high levels of pollution load produced in leather industry, many studies are being conducted replace most hazardous chemicals used. One options is use enzymes which biodegradable and considered environmentally friendly. Hides skins contain non-collagenous substances that require specific remove. The aim study was evaluate effectiveness different enzyme formulations unhairing process ...

Indonesia possesses tremendous marine resources. Therefore, their products are appropriate for exploration. In the prior study, bacteria generating keratinase enzyme have isolated from local fish market trash. The may hydrolyze keratin on skin. Surrounding parameters, such as temperature, pH, and incubation duration, factors affecting activity of enzyme. This study aims to isolate characterize ...

In black feathers, melanin is embedded in keratin matrix that makes feather more resistance to the microbial degradation. Chryseobacterium sp. RBT previously isolated from the poultry waste disposable site revealed strong sulfitolytic and keratinolytic activities. Maximum keratinase activity was observed at 48 h (89.12 U ml-1) showed 83 % of native black feather degradation. The concentration o...

Keratinases are enzymes of great importance involved in pathogenic processes of some fungi. They also have a widespread ecological role since they are responsible for the degradation and recycling of keratin. On the one hand, studying them furthers our knowledge of pathogenicity mechanisms, which has important implications for human health, and on the other hand, understanding their ecological ...

Keratinase is a protease which degrades the insoluble protein keratin that largely found in feather waste. Fifty-seven soil samples were collected from and poultry waste dumping sites. All these subjected for enrichment Whole meal medium containing 1% chicken as sole source of Carbon, nitrogen energy with pH 8.0 incubated at 30°C on shaker condition (150 rpm) 7 days. Out 57 flasks only 21 sh...

Keratinase is a potential industrial enzyme for handling keratinaceous solid wastes and also cleaner dehairing alternative to chemical methods in tanneries. The technologies towards circular economy approach are gaining importance leather manufacturing sector. In this study, new bacterial strain Bacillus sp. KLP1, exhibiting high tolerance sodium chloride sulphide, was isolated. This effectivel...

BACKGROUND Photodynamic treatment (PDT) refers to a treatment with light-activated agents (photosensitizers) in combination with visible light and molecular oxygen. Recently, we have demonstrated that the porphyrins, 5,10,15-tris(4-methylpyridinium)-20-phenyl-[21H,23H]-porphine trichloride (Sylsens B) and deuteroporphyrin monomethylester (DP mme) are excellent photosensitizers to be used agains...