| Titles |
|
English :
|
Characteristics of carbonated stirred yoghurt-bifidum milk fortified with honey and vitamin c.
|
|
Arabic :
|
خصائص لبن اليوغورت- بيفيدم المجنس المعامل بغاز ثانى اوكسيد الكربون و المدعم بعسل النحل و فيتامين ج
|
|
| Abstract |
The effect of injection carbon dioxide in stirred yoghurt-bifidum fermented milk fortified with honey and vitamin C on the viability of starter culture, keeping quality and sensory acceptability of the products stored under refrigeration was studied.
CO2 was injected in three concentrations, 10, 20 and 30 g/kg milk product that resulted in approximately 2.3, 4.8 and 5,5 mM of dissolved CO2 /kg fermented milk respectively. Compared to control, carbonation (I) increased the acidity (%) of the fresh products without affecting the pH, (2) had no clear effect on total volatile fatty acids, (3) increased markedly acetaldehyde formation, (4) had no effect on growth and viability of S. thermophilus, (5) promoted the growth and viability of L. bulgaricus and B. bifidum, (6) inhibited the growth of mould and yeast. (7) increased the overall acceptability of the fermented milk and sensory properties by enhancement of its mouth feel and refreshing characteristic. No significant effect was found for increasing the level of the injected CO2 on the measured parameters, Therefore, fortification of milk with 2% honey and 50 mg/kg vitamin C with direct injection of 10g/kg of carbon dioxide in the refrigerated stirred final product may be of interest to increase the viability of bifidobacteria and shelf life of yoghurt-bifidum milk, in addition to the enhancement of its sensory properties and nutritional quality.
Key words: Carbon dioxide, fermented milk. yoghurt. bifidobacteria, vitamin C. honey,
|
| Publication year |
2007
|
| Pages |
45-46
|
| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
|
| Availability number |
|
| Organization Name |
Animal Production Research Institute (APRI)
|
| serial title |
Egyptian Journal Dairy Science
|
| Author(s) from ARC |
|
| External authors (outside ARC) |
|
| Agris Categories |
Animal feeding
|
AGROVOC
TERMS |
Ascorbic acid.
Carbon dioxide.
Cultured milk.
Honey.
Yoghurt.
|
| Proposed Agrovoc |
bifidobacteria;
|
| Publication Type |
Journal
|