Alkaline crude enzymes from the viscera of the Tunisian barbel (Barbus callensis) were extracted and characterized. Proteolytic crude extract from barbel viscera was active and stable in alkaline solution. The optimum pH and temperature were 11.0 and 55 °C, respectively, using casein as a substrate. The crude alkaline protease was extremely stable in the pH range of 5.0-12.0. Zymography activit...

Alkaline crude enzymes from the viscera of the Tunisian barbel (Barbus callensis) were extracted and characterized. Proteolytic crude extract from barbel viscera was active and stable in alkaline solution. The optimum pH and temperature were 11.0 and 55 °C, respectively, using casein as a substrate. The crude alkaline protease was extremely stable in the pH range of 5.0-12.0. Zymography activit...

Photosynthetic and biochemical characterization of in vitro-derived African violet (Saintpaulia ionantha H. Wendl) plants to ex vitro conditions Yaser Hassan Dewir, Mohammed El-Sayed El-Mahrouk, Hanady Salim Al-Shmgani, Hail Z. Rihan, Jaime A. Teixeira da Silva & Michael P. Fuller a Plant Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi ...

Large numbers of taste buds are distributed over the body surface of the channel catfish Zctalurus punctatus, with the barbels having an especially high density. L-Alanine, as well as certain other amino acids, are taste stimuli in this animal. Epithelial tissue obtained by gentle scraping of the barbel surface was fractionated by differential centrifugation. A sedimentable fraction (P2) was pr...

background and purpose: it is important to follow annually the probable changes in distribution pattern of dermatophytosis and its etiological agents in different communities. in this study, we determined the prevalence of dermatophytosis and its causative agents in damascus, syria, between 2008 and 2016. materials and methods: a total of 4080 outpatients who visited the dermatological clinics ...

Ibn al-Nafis was an Arab physician, scientist, and philosopher who was born in 1213 in Damascus and died in 1288 in Cairo. He studied medicine in Damascus and moved to Egypt to practice medicine where he became the chief physician in the Mansouri Bimaristan. Ibn al-Nafis wrote in a wide array of fields, including physiology, medicine, ophthalmology, embryology, psychology, philosophy, law, and ...