Review Article
Development of Microencapsulation Delivery System for Long-Term Preservation of Probiotics as Biotherapeutics Agent
Table 3
Relative pH and transit time at various locations within GIT.
| Region | pH | Transit time |
| Oesophagus | ~7.0 | 10–14 seconds | Stomach | 1–2.5 (up to 5 fed) | Half emptying: ~80.5 mins | Proximal small intestine | 6.15–7.35 | hrs (combined) | Distal small intestine | 6.80–7.88 | Ascending colon | 5.26–6.72 | Highly variable, dependent on bowel evacuation | Descending colon | 5.20–7.02 |
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