4. Conclusion
This study was conducted to enable retail production of a new type of
fermented sausage by incorporating baechu-kimchiwith microbiological
effects. To evaluate the utility of the LAB present in kimchi as a substitute
starter culture and a natural preservative, the effects of kimchi and
freeze-dried kimchi-powder on the chemical and microbiological characteristics
were investigated. The results clearly demonstrated that the
LAB integrated via the addition of kimchi as well as kimchi-powder
were well adapted to the new habitat of fermenting sausage, reaching
maximum numbers of 8.65–8.80log10cfu/g after 1–2days of fermentation.
Specially, the kimchi and kimchi-powder sausages exhibited good
souring properties with the pH values ranged from 4.78 to 4.33 after
the first two days of fermentation. In all kimchi and kimchi-powder sausages,
the growth of Enterobacteriaceae was completely inhibited
throughout the processing period (b2log10cfu/g). The sausage batches
containing more than 10% kimchi and 2% kimchi-powder showed no
growth of S. aureus, whereas the control and another kimchi sausage
batch reflected the growth of S. aureus (3.68–4.72log10cfu/g). Based on
the materials and ingredients used in the production of kimchi, the use of kimchi appears to be more beneficial than the use of pure starter culture
due to its useful compounds in addition to LAB for the stability and
safety of fermented sausages. In particular, the utility of freeze-dried
kimchi-powder was demonstrated as it achieved excellent microbial
stability of sausages and thus contributed to the safety of the fermented
sausages. As a result, the addition of kimchi (≥10%) and kimchi-powder
to the sausage mixture prior to fermentation produced themicrobiological
stability required for fermented sausages.