{"id":4512,"date":"2025-01-07T02:21:10","date_gmt":"2025-01-07T07:21:10","guid":{"rendered":"https:\/\/www.bocsci.com\/blog\/?p=4512"},"modified":"2025-01-07T02:21:12","modified_gmt":"2025-01-07T07:21:12","slug":"10-common-types-of-bacterial-culture-media-formulas-preparation-methods-and-characteristics","status":"publish","type":"post","link":"https:\/\/www.bocsci.com\/blog\/10-common-types-of-bacterial-culture-media-formulas-preparation-methods-and-characteristics\/","title":{"rendered":"10 Common Types of Bacterial Culture Media: Formulas, Preparation Methods\u00a0and Characteristics"},"content":{"rendered":"\n<h2><strong>1.<\/strong><strong>Nutrient Agar (NA)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Beef extract: 3g<\/p>\n\n\n\n<p>Peptone: 5g<\/p>\n\n\n\n<p>Sodium chloride: 5g<\/p>\n\n\n\n<p>Agar: 15-20g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Add all components to water and heat while stirring until completely dissolved.<\/p>\n\n\n\n<p>Adjust the final volume to 1000mL.<\/p>\n\n\n\n<p>Dispense into containers and sterilize by autoclaving at 121\u00b0C for 15 minutes.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Commonly used for cultivating bacteria without special nutritional requirements.<\/p>\n\n\n\n<p>Suitable for isolating and culturing general bacteria, such as <em>Escherichia coli<\/em>.<\/p>\n\n\n\n<h2><strong>2.<\/strong><strong>Nutrient Broth (NB)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Beef extract: 3g<\/p>\n\n\n\n<p>Peptone: 5g<\/p>\n\n\n\n<p>Sodium chloride: 5g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve all components in water and mix thoroughly.<\/p>\n\n\n\n<p>Adjust the final volume to 1000mL, dispense into containers, and autoclave at 121\u00b0C for 15 minutes.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>A liquid medium used for bacterial liquid culture or metabolic studies.<\/p>\n\n\n\n<h2><strong>3.<\/strong><strong>Luria-Bertani Medium (LB)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Peptone: 10g<\/p>\n\n\n\n<p>Yeast extract: 5g<\/p>\n\n\n\n<p>Sodium chloride: 10g<\/p>\n\n\n\n<p>Agar (for solid medium): 15g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve peptone, yeast extract, and sodium chloride in water. Add agar for solid medium.<\/p>\n\n\n\n<p>Heat and stir until fully dissolved, adjust the final volume to 1000mL.<\/p>\n\n\n\n<p>Sterilize by autoclaving at 121\u00b0C for 15 minutes.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>A general-purpose medium suitable for both Gram-positive and Gram-negative bacteria, such as <em>E. coli<\/em>.<\/p>\n\n\n\n<p>Widely used in molecular biology experiments and general bacterial culture.<\/p>\n\n\n\n<h2><strong>4.<\/strong><strong>Blood Agar (BA)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Nutrient agar base: 40g<\/p>\n\n\n\n<p>Fresh sheep blood: 50mL<\/p>\n\n\n\n<p>Distilled water: 950mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Prepare the base medium following the nutrient agar recipe. Sterilize by autoclaving and cool to 50\u00b0C.<\/p>\n\n\n\n<p>Add sterile fresh sheep blood, mix well, and pour into plates.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Supports the growth of most pathogenic bacteria (e.g., hemolytic streptococci).<\/p>\n\n\n\n<p>Allows observation of hemolysis patterns: \u03b1-hemolysis, \u03b2-hemolysis, or \u03b3-hemolysis.<\/p>\n\n\n\n<h2><strong>5.<\/strong><strong>MacConkey Agar (MAC)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Peptone: 17g<\/p>\n\n\n\n<p>Proteose peptone: 3g<\/p>\n\n\n\n<p>Lactose: 10g<\/p>\n\n\n\n<p>Bile salts: 1.5g<\/p>\n\n\n\n<p>Neutral red: 0.03g<\/p>\n\n\n\n<p>Sodium chloride: 5g<\/p>\n\n\n\n<p>Agar: 13.5g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve all components in water while heating and stirring.<\/p>\n\n\n\n<p>Adjust the final volume to 1000mL, autoclave, and pour plates after cooling.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>A selective medium inhibiting Gram-positive bacteria.<\/p>\n\n\n\n<p>Used for isolating Gram-negative intestinal bacteria (e.g., <em>E. coli<\/em>), with lactose-fermenting colonies appearing red.<\/p>\n\n\n\n<h2><strong>6.<\/strong><strong>Triple Sugar Iron Agar (TSI)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Glucose: 1g<\/p>\n\n\n\n<p>Lactose: 10g<\/p>\n\n\n\n<p>Sucrose: 10g<\/p>\n\n\n\n<p>Beef extract: 3g<\/p>\n\n\n\n<p>Peptone: 20g<\/p>\n\n\n\n<p>Sodium thiosulfate: 0.3g<\/p>\n\n\n\n<p>Sodium chloride: 5g<\/p>\n\n\n\n<p>Ferrous salts: 0.2g<\/p>\n\n\n\n<p>Phenol red: 0.024g<\/p>\n\n\n\n<p>Agar: 15g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve all components in water, dispense into tubes, and solidify in a slant-deep configuration.<\/p>\n\n\n\n<p>Sterilize by autoclaving at 121\u00b0C for 15 minutes.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Detects sugar fermentation and hydrogen sulfide production.<\/p>\n\n\n\n<p>Commonly used for intestinal bacteria identification.<\/p>\n\n\n\n<h2><strong>7.<\/strong><strong>Salmonella-Shigella Agar (SS)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Peptone: 5g<\/p>\n\n\n\n<p>Lactose: 10g<\/p>\n\n\n\n<p>Bile salts: 8.5g<\/p>\n\n\n\n<p>Sodium thiosulfate: 8.5g<\/p>\n\n\n\n<p>Ferric chloride: 1g<\/p>\n\n\n\n<p>Agar: 15g<\/p>\n\n\n\n<p>Neutral red: 0.025g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve ingredients in water, sterilize by autoclaving, and pour into plates.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>A selective medium for isolating Salmonella and Shigella.<\/p>\n\n\n\n<p>Lactose-fermenting colonies appear red, and Salmonella produces black colonies.<\/p>\n\n\n\n<h2><strong>8.<\/strong><strong>Tryptic Soy Agar (TSA)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Tryptone: 15g<\/p>\n\n\n\n<p>Yeast extract: 5g<\/p>\n\n\n\n<p>Sodium chloride: 5g<\/p>\n\n\n\n<p>Agar: 15g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve all components in water, adjust to 1000mL, and autoclave.<\/p>\n\n\n\n<p>Pour into plates after cooling.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>A general-purpose medium suitable for various bacterial species.<\/p>\n\n\n\n<p>Widely used in microbial testing and strain storage.<\/p>\n\n\n\n<h2><strong>9.<\/strong><strong>De Man, Rogosa, and Sharpe Agar (MRS)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Glucose: 20g<\/p>\n\n\n\n<p>Peptone: 10g<\/p>\n\n\n\n<p>Yeast extract: 4g<\/p>\n\n\n\n<p>Beef extract: 10g<\/p>\n\n\n\n<p>Ammonium citrate: 2g<\/p>\n\n\n\n<p>Dipotassium phosphate: 2g<\/p>\n\n\n\n<p>Magnesium sulfate: 0.2g<\/p>\n\n\n\n<p>Manganese sulfate: 0.05g<\/p>\n\n\n\n<p>Agar: 15-20g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve components in water, sterilize by autoclaving, and pour into plates.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Specifically designed for lactic acid bacteria.<\/p>\n\n\n\n<p>Low pH inhibits the growth of other bacteria.<\/p>\n\n\n\n<h2><strong>10.<\/strong><strong>Cellulose Decomposition Medium (CDM)<\/strong><strong><\/strong><\/h2>\n\n\n\n<p><strong>Formula:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Microcrystalline cellulose: 10g<\/p>\n\n\n\n<p>Potassium nitrate: 1g<\/p>\n\n\n\n<p>Dipotassium phosphate: 1g<\/p>\n\n\n\n<p>Magnesium sulfate: 0.5g<\/p>\n\n\n\n<p>Sodium chloride: 0.5g<\/p>\n\n\n\n<p>Agar: 15-20g<\/p>\n\n\n\n<p>Distilled water: 1000mL<\/p>\n\n\n\n<p><strong>Preparation Method:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Dissolve all components, sterilize by autoclaving, and pour into plates.<\/p>\n\n\n\n<p><strong>Characteristics:<\/strong><strong><\/strong><\/p>\n\n\n\n<p>Used for isolating cellulose-decomposing bacteria.<\/p>\n\n\n\n<p>Supports research on cellulase activity.<\/p>\n\n\n\n<p><strong>Articles about Cell Culture<\/strong><strong><\/strong><\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/cell-culture-faqs.html\">Cell Culture FAQs<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/cell-culture-definition-application-protocol-and-principle.html\">Cell Culture: Definition, Application, Protocol and Principle<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/classification-composition-and-preparation-of-medium-in-cell-culture.html\">Classification, composition, and preparation of medium in cell culture<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/selection-and-use-of-antibiotics-in-cell-culture.html\">Selection and use of antibiotics in cell culture<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/role-and-metabolic-regulation-mechanism-of-hormone-in-cell-culture.html\">Role and metabolic regulation mechanism of hormone in cell culture<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/principles-and-characteristics-of-different-cell-culture-methods.html\">Principles and characteristics of different cell culture methods<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/concept-method-and-application-of-3d-cell-culture-technology.html\">Concept, method, and application of 3D cell culture technology<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/common-cell-culture-problems-and-causes.html\">Common cell culture problems and causes<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/procedures-and-applications-of-primary-cell-culture-technology.html\">Procedures and applications of primary cell culture technology<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/growth-factors-for-mammalian-cell-culture.html\">Growth Factors for Mammalian Cell Culture<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/lipid-and-fatty-acid-in-cell-culture.html\">Lipid and Fatty Acid in Cell Culture<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bocsci.com\/resources\/types-functions-and-applications-of-vitamins-in-cell-culture.html\">Types, Functions, and Applications of Vitamins in Cell Culture<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1.Nutrient Agar (NA) Formula: Beef extract: 3g Peptone: 5g Sodium chloride: 5g Agar: 15-20g Distilled water: 1000mL Preparation Method: Add all components to water and heat while stirring until completely [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4515,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/posts\/4512"}],"collection":[{"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/comments?post=4512"}],"version-history":[{"count":1,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/posts\/4512\/revisions"}],"predecessor-version":[{"id":4516,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/posts\/4512\/revisions\/4516"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/media\/4515"}],"wp:attachment":[{"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/media?parent=4512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/categories?post=4512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bocsci.com\/blog\/wp-json\/wp\/v2\/tags?post=4512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}