Developing Guidelines For a Good Jamu Gendong Production

30

3.3.4.4 Staphylococcus analysis BAM, 2010

One mL portions of determined dilutions of samples was transferred using a sterile pipette to 3 tubes of 9 mL Trypticase Soy broth TSB containing 10 NaCl. The tubes were then incubated at 35 o C for 48 ± 2 h. Tube showing growth turbidity was vortexed and a loopful was streaked on Baird-Parker medium. The plates were incubated for 48 h at 35 o C to obtain isolated colonies. Colony suspected of being Staphylococcus is circular, smooth, convex, moist, and gray to jet-black colored, frequently associated with an outer clear zone. The confirmed tube samples were reported as MPN of Staphylococcusml, according to the three series MPN table shown on Appendix 18.

3.3.4.5 Salmonella analysis BAM, 2010

Investigated samples 25 mL samples were placed into 225 mL of buffered peptone water BPW for the pre enrichment and was incubated at 35ºC for 24± 2 h. An aliquot of 1 mL was taken from the pre enrichment showing growth turbidity to the TT broth. While the RV broth was inoculated with a 0.1 mL aliquot of the pre enrichment and were then incubated at 42ºC for 24± 2 h, and the TT broths at 35ºC for 24± 2 h. After which, the broths were streaked 3 mm loopful 10 µl onto Bismuth Sulfite BS, Hektoen Enteric Agar HEA, and Xylose Lysine Deoxicholate XLD agar plates and are incubated at 35ºC for 24 h. Typical Salmonella sp. colonies release H2S and appear completely black or have black centers when plated on BS, HEA, and XLD agar plates. Atypical colonies may appear yellow on XLD and HEA and green, clear or mucoid on BS plates. Indicative colony of Salmonella sp. were selected and stabbed into a Triple Sugar Iron agar TSI and Lysine Iron Agar LIA slant, and incubated at 35ºC for 24 ± 2 h. Salmonella in culture typically produces alkaline red slant and acid yellow butt, with or without production of H 2 S blackening of agar in TSI. In LIA, Salmonella typically produces alkaline purple reaction in butt of tube with or without production of H 2 S.

3.3.4.6 pH

Sample was prepared and immersed by electrode to take the pH reading, allowing time for the meter to stabilize. Afterwards, the electrode was rinsed with distilled H 2 0 and dried to repeat duplo on a fresh portion of the sample.

3.3.4.7 Statistical Analysis

Data analysis was performed with Microsoft Excel 2010 software application. A statistical significance was determined by two paired t-Test Analysis of variance.