Good Manufacturing Practices and Microbial Contamination Sources in Orange Fleshed Sweet Potato Puree Processing Plant in Kenya

Table 9

Microbial counts of OFSP at different stages of processing in OFSP puree processing plant¹ (log Mean CFU/g).

Processing stages	TVC	Yeasts-molds	S. aureus	Enterobacteriaceae	Coliforms	E. coli
Raw OFSP	7.19 ± 0.27	2.51 ± 0.30	3.01 ± 0.15	4.57 ± 0.20	3.74 ± 0.19	nd
Steaming	nd	nd	nd	nd	nd	nd
Cooling and Slicing	7.12 ± 0.21	nd	2.93 ± 2.54	4.62 ± 0.15	4.37 ± 0.13	nd
Packaging	7.96 ± 0.57	4.01 ± 0.33	5.88 ± 0.53	6.55 ± 0.18	5.82 ± 0.13	4.77 ± 0.45

All values reflect mean counts and standard deviation. Values bearing different superscript letters in each column are significantly different (); TVC: total viable counts; nd: not detected.