KARAKTERISTIK DAYA HAMBAT PERTUMBUHAN BAKTERI PERUSAK PANGAN HASIL ISOLASI DARI IKAN NILA (Oreochromis niloticus) OLEH EKSTRAK JAHE (Zingiber officinale ) DENGAN PENGENCER EMULSI TWEEN 80
Abstract: Nile Tilapia is a
fish that is easy to get damaged by food microorganism contamination. This study
aimed to understand the characteristic of inhibition zone of the ginger extract
to bacteria growth that is isolated from Nile Tilapia. This research was a pure
experimental with randomized control trial factorial research design that
included of 2 factors which were type of bacteries (Staphylococcus saphropyticus,
Bacillus alvei, Bacillus licheniformis, and Pseudomonas aeruginosa) and ginger
extract concentration (0%, 25%, 35%, dan 45%), each of them was repeated 3
times. The independents variable were type of bacteries and ginger extract
concentration and the dependen variable was bacte-rial growth inhibition zone.
This study found that the inhibition zone in every extract concetration from the
widest to the narrowest were Staphylococcus saphropyticus, Bacillus alvei,
Bacillus licheniformis, and Pseudomonas aeruginosa. Optimum concentration to
inhibit the growing of Bacillus alvei and Bacillus licheniformis was 45%.The
25% of extract was effective to inhibit the growth of Staphylococ-cus
saphropyticus and Pseudomonas aeruginosa. To sum up, the strongest inhibition
of ginger extract was on Staphylococcus saphropyticus and the weakest was on
Pseudomonas aeruginosa. There were significant effects in inhibition zone of
bacterial growth that are isolated from Nile Tilapia in every concentration of
ginger extract and every species of bacteria.
Penulis: Eni Purwani, Yulia
Dwi Susanti, Dwi Puspita Ningrum, Widati, dan Qudwatun Qoyyimah
Kode Jurnal: jpkesmasdd120140
