Characteristics and cariogenicity of a fructanase-defective Streptococcus mutants strain
نویسندگان
چکیده
منابع مشابه
Characteristics and cariogenicity of a fructanase-defective Streptococcus mutants strain.
Polymers of D-fructose produced by a variety of oral bacteria are believed to function as extracellular carbohydrate reserves. Degradation of these polysaccharides in plaque following exhaustion of dietary carbohydrates is thought to contribute to the extent and duration of the acid challenge to the tooth surface and thus to the initiation and progression of dental caries. Streptococcus mutans ...
متن کاملCariogenicity of Streptococcus mutans Glucan-Binding Protein Deletion Mutants
Streptococcus mutans is a principal etiologic agent in the development of dental caries due to its exceptional aciduric and acidogenic properties, and its ability to adhere and accumulate in large numbers on tooth surfaces in the presence of sucrose. Sucrose-dependent adherence is mediated by glucans, polymers of glucose synthesized from sucrose by glucosyltransferase (Gtf) enzymes. S. mutans m...
متن کاملSelection of Streptococcus lactis Mutants Defective in Malolactic Fermentation.
An enrichment medium and a new sensitive medium were developed to detect malolactic variants in different strains of lactic bacteria. Factors such as the concentration of glucose and l-malate, pH level, and the type of indicator dye used are discussed with regard to the kinetics of malic acid conversion to lactic acid. Use of these media allowed a rapid and easier screening of mutagenized strep...
متن کاملCariogenicity features of Streptococcus mutans in presence of rubusoside.
BACKGROUND One promising way of reducing caries is by using sucrose substitutes in food. rubusoside is a prototype sweet substance isolated from the leaves of the plant Rubrus suavissimus S. Lee. (Rosaceae), and is rated sweeter than sucrose. The purpose of this study was to investigate the effects of rubusoside on Streptococcus mutans growth, acidogenicity, and adherence to glass in vitro. M...
متن کاملAntimicrobial effects of Tanacetum balsamita L essential oil Streptococcus mutants, Streptococcus sanguis and Streptococcus salivarius and its comparison with common mouthwashes
Background and aim: Tooth decay is one of the most common diseases in the world. The use of herbal substances to prevent and treat this disease has been considered for various reasons, such as increasing the resistance of bacteria to antibiotics, high cost, and adverse effects of some chemicals used in dentistry. This study aimed to investigate the effect of Tanacetum balsamita L essential oil ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1992
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.60.9.3673-3681.1992