Weiyel Reference Materials
info@weiyel.com
| Subculture | Nutritional gravy medium (English name: NA/NB): beef paste 3.0g, peptone 10.0g,NaCl 5.0g, agar 20.0g (not included in liquid medium), distilled water 1.0L,pH 7.0. Sterilization at 121 ℃ for 15min. [Note] Adding 5 mgMnSO4 · H2O to culture Bacillus is beneficial to produce spores. |
| Subculturing | 1. Cultivate the target bacteria until the spore yield is maximum; 2. Inactivate and dissolve the bacteria themselves and collect spores; 3. Count and pack the spores; |
| Growth conditions | 45 ℃;24-48h; Aerobic |
| Storage conditions | 2-8 ℃ |
| Safety level | 1 |
| Morphology | This spore suspension is a pure spore suspension, which is obtained by cell separation and collection of spores. It can be used directly, and the corresponding volume can be added according to the test requirements. |
| Application | It is suitable for the production of sterilization effect indicator bacteria and high-density Bacillus coagulans in canned food. |
| Sharing mode | Public welfare sharing |
Quality control sample vibrio parahaemolyticus in food
BNCC362539
Reference material of bacillus atrophaeus spores count
BNCC359096
Water quality total coliform positive quality control samples (Paper Rapid Method)
BNCC360409
Bacillus stearothermophilus spore suspension
BNCC360469
Clostridium sporogenes spore suspension
BNCC362135
Water quality fecal coliform standard quality control sample (Membrane membrane method)
BNCC360398