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無菌
non-sterile
品質等級
形狀
powder
儲存期限
limited shelf life, expiry date on the label
製造商／商標名
NutriSelect® Plus
技術
microbiological culture: suitable
pH值
7.8±0.2 (25 °C)
應用
clinical testing
food and beverages
microbiology
儲存溫度
2-25°C
適合性
nonselective for Streptococcus spp.
一般說明
Todd Hewitt Broth is used for cultivation of haemolytic streptococci for different serological tests. This medium has been recommended as an alternative type in epidemiologic studies of group A streptococci as well as pathogenic microorganisms. Todd Hewitt Broth medium is very nutritive by the presence of peptic digest of animal tissue and beef heart infusion. Dextrose stimulates haemolysin production. The medium is well buffered by sodium phosphate and sodium carbonate to neutralize the acid produced during dextrose fermentation. This restricts destruction of antigenic streptococcal haemolysin. It is also found that sodium phosphate has a stimulating effect on the pneumococcal growth. Todd Hewitt Broth can be employed as an alternative to serum broth or horse flesh digest broth for the cultivation of streptococci prior to serological typing.
應用
Recommended for the cultivation of group A hemolytic Streptococci used for serological studies.
Todd Hewitt broth has been used for the culture of various microorganisms, such as Bacillus subtilis and Streptococcus pneumoniae.
成分
组分 (g/L)：
牛心浸粉 500.00
动物组织消化物 20.00
右旋糖 2.00
氯化钠 2.00
磷酸钠 0.40
碳酸钠 2.50
牛心浸粉 500.00
动物组织消化物 20.00
右旋糖 2.00
氯化钠 2.00
磷酸钠 0.40
碳酸钠 2.50
準備報告
Suspend 37 g of Todd Hewitt Broth in 1000 ml of distilled water. Mix well and dispense as desired. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes.
腳註
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
法律資訊
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Faceshields, Gloves, type N95 (US)
其他客户在看
Observation of Pneumococcal Phase Variation in Colony Morphology
Li J, et al.
Bio-protocol, 7(15) (2017)
Moody, M.D., et al.
American Journal of Public Health, 53, 1083-1083 (1963)
Todd, E.W., et al.
The Journal of Pathology and Bacteriology, 35, 1-97 (1932)
Assessing membrane fluidity and visualizing fluid membrane domains in bacteria using fluorescent membrane dyes
Wenzel M, et al.
Bio-protocol (2018)
The pore-forming protein gasdermin D regulates interleukin-1 secretion from living macrophages
Evavold CL, et al.
Immunity, 48(1), 35-44 (2018)
商品
Streptococci- Overview of Detection, Identification, Differentiation and Cultivation Techniques
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