1 Scope
This standard specifies the method for identification and enumeration of bifidobacterium.
This standard is applicable to identification and enumeration of pure strains of bifidobacterium, strain identification of single bifidobacterium in foods and enumeration of bifidobacterium in foods; namely, one or more different strains of bifidobacterium may be contained in foods.
2 Apparatus and Materials
In addition to the apparatus for conventional sterilization and cultivation in microbiological laboratory, other apparatus and materials are as follows:
2.1 Constant temperature incubator: 36℃±1℃.
2.2 Refrigerator: 2℃~5℃.
2.3 Balance: with sensibility of 0.01g.
2.4 Aseptic test tube: 18mm×l80mm, 15mm×100mm.
2.5 Aseptic pipette: 1mL (with scale division of 0.01mL), 10mL (with scale division of 0.1mL) or micropipettor and supporting pipette tips.
2.6 Aseptic culture dish: 90mm in diameter.
3 Culture Media and Reagents
3.1 Bifidobacterium medium: see A.1.
Foreword i
1 Scope
2 Apparatus and Materials
3 Culture Media and Reagents
4 Examination Procedures
5 Operation Steps
Appendix A Culture Media and Reagents
Appendix B Detection Method for Organic Acid Metabolites of Bifidobacterium
1 Scope
This standard specifies the method for identification and enumeration of bifidobacterium.
This standard is applicable to identification and enumeration of pure strains of bifidobacterium, strain identification of single bifidobacterium in foods and enumeration of bifidobacterium in foods; namely, one or more different strains of bifidobacterium may be contained in foods.
2 Apparatus and Materials
In addition to the apparatus for conventional sterilization and cultivation in microbiological laboratory, other apparatus and materials are as follows:
2.1 Constant temperature incubator: 36℃±1℃.
2.2 Refrigerator: 2℃~5℃.
2.3 Balance: with sensibility of 0.01g.
2.4 Aseptic test tube: 18mm×l80mm, 15mm×100mm.
2.5 Aseptic pipette: 1mL (with scale division of 0.01mL), 10mL (with scale division of 0.1mL) or micropipettor and supporting pipette tips.
2.6 Aseptic culture dish: 90mm in diameter.
3 Culture Media and Reagents
3.1 Bifidobacterium medium: see A.1.
Contents of GB 4789.34-2016
Foreword i
1 Scope
2 Apparatus and Materials
3 Culture Media and Reagents
4 Examination Procedures
5 Operation Steps
Appendix A Culture Media and Reagents
Appendix B Detection Method for Organic Acid Metabolites of Bifidobacterium