Table 6.
Results of microbiological analysis (M ± SD cfu/g) in frozen chicken nuggets for 12 mo of storage.
| Microorganism | Samples | Storage time (months) |
||||
|---|---|---|---|---|---|---|
| 0 | 3 | 6 | 9 | 12 | ||
| TVC | C | 550 ± 40a,z | 2400 ± 120a yz | 6500 ± 250a xy | 8950 ± 425a wx | 10,000 ± 500a,w |
| CRH+P | 725 ± 50bc,z | 975 ± 45bc yz | 1000 ± 60bc xy | 2350 ± 115bc wx | 4500 ± 425bc,w | |
| CRL+GS | 665 ± 46c,z | 780 ± 50c yz | 1200 ± 50c xy | 1500 ± 80c wx | 2500 ± 180c,w | |
| CHYT+P+H | 615 ± 34bc,z | 900 ± 70bc yz | 1450 ± 25bc xy | 1850 ± 95bc wx | 4700 ± 200bc,w | |
| SZ | 1100 ± 90abc,z | 1200 ± 80abc yz | 3150 ± 210abc xy | 4500 ± 120abc wx | 8500 ± 350abc,w | |
| SZRH+P | 725 ± 67ab,z | 1200 ± 90ab yz | 1500 ± 200ab xy | 3200 ± 320ab wx | 4500 ± 495ab,w | |
| SZRL+GS | 220 ± 40c,z | 400 ± 50c yz | 700 ± 80c xy | 1000 ± 60c wx | 2500 ± 120c,w | |
| SZHYT+P+H | 1020 ± 98bc,z | 1475 ± 115bc yz | 2300 ± 90bc xy | 3350 ± 250bc wx | 5000 ± 290bc,w | |
| Escherichia coli | <10 | |||||
| Staphylococcus aureus | <10 | |||||
| Lysteria monocytogenes | Absence in 25 g | |||||
| Salmonella | Absence in 25 g | |||||
Different letters among data in the same column indicate significant differences between samples (P < 0.05).
Different letters among data in the same row indicate significant differences between month of analysis (P < 0.05).
Abbreviations: C, control; CRH+P, 1000 ppm rosemary extract + 1500 ppm pomegranate extract; CRL+GS, 1000 ppm Nutrox OS + 1500 ppm grape seed extract; CHYT+P+H, 1500 ppm pomegranate extract + 750 ppm hydroxytyrosol + 500 ppm Harpagophytum; M, mean; SD, standard deviation; SZ, control fortified with Zn and Se meat; SZRH+P, 1000 ppm rosemary extract + 1500 ppm pomegranate extract; SZRL+GS, 1000 ppm Nutrox OS + 1500 ppm grape seed extract; SZHYT+P+H, 1500 ppm pomegranate extract + 750 ppm hydroxytyrosol + 500 ppm Harpagophytum; TVC, total viable count.