ingestion can cause severe injury to the esophagus and stomach. The severity and extent of esophageal and gastric damage resulting from caustic ingestion depend upon several factors. In the present report, we describe the case of a 55-year-old schizophrenic man who drank 400 mL of hydrochloric acid. Endoscopy indicated the presence of white esophageal mucosa and black gastric mucosa, which is e...

The experiments described in this paper were undertaken to throw light on the possible role of gastric urease in the secretion of hydrochloric acid by the stomach. Mathews (1925) first suggested thatgastric hydrochloric acid might be produced by the reaction NJEI4Cl-NH3+HCl, and Luck (1924) showed that ammonia can be formed from urea by suspensions of ground dog gastric mucosa. Rigoni (1930), M...

The food-borne pathogen Escherichia coli O157:H7 is commonly exposed to organic acid in processed and preserved foods, allowing adaptation and the development of tolerance to pH levels otherwise lethal. Since little is known about the molecular basis of adaptation of E. coli to organic acids, we studied K-12 MG1655 and O157:H7 Sakai during exposure to acetic, lactic, and hydrochloric acid at pH...

In the case of actinomycin X2, such reduction leads to formation of actinomycin Cx (IV, L-proline) or actinomycin X0£ (I, threohydroxy-L-proline) and Xod (allohydroxy-Lproline). Previous reports have suggested that oxoproline was destroyed by vigorous hydrolysis of actinomycin X2 with hydrochloric acid and that recovery of the imino acid was achieved in low yield after hydrolysis with hydroiodi...

The aim of study was to extract pectin from papaya peel and study its physico‐chemical characteristics. Pectin was extracted using hydrochloric acid and citric acid, at different time, temperature and pH combinations. Extraction was done at temperatures 60°C, 70°C and 80°C for time 30 mins, 45 mins and 60 mins, and pH 2, 2.5 and 3.0 respectively. Using hydrochloric acid, the yield of pectin was...

Highly crystalline TiO(2) nanostructures were prepared through a facile inorganic acid-assisted hydrothermal treatment of hexagonal-structured assemblies of nanocrystalline titiania templated by cetyltrimethylammonium bromide (Hex-ncTiO(2)/CTAB Nanoskeleton) as starting materials. All samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The influence...

Numerous recent reports have outlined the clinical profile of childhood peptic ulcer (Alexander, 1951; Fallstrom and Reinand, 1961; Gadiyar, Taneja, and Ghai, 1963; Girdany, 1953; Michener, Kennedy, and Du Shane, 1960; Muggia and Spiro, 1959; Ramirez Ramos, Kirsner, and Palmer, 1960). Investigation of its pathogenesis, however, has not received much attention. There is general agreement that pe...