Kelimpahan Bakteri Filosfer Pada Beberapa Sayuran Lalaban

Several phyllosphere bacteria were investigated using plate count method. Pink-pigmented facultative methylotroph (PPFM), phyllosphere, streptomycin resistant, and endospore-forming bacteria were isolated and counted from four Indonesian lalaban such as poh-pohan , lettuce, basil, and bean sprout. This research shows the number of bacteria present on those leafy salads. The number of PPFM bacteria was approximately 8.75 x 10 2 to 6.62 x 10 4 cfu g -1 . Total phyllosphere bacteria was 1.07 to 2.90 x 10 8 cfu g -1 , while streptomycin resistant bacteria was 4.63 x 10 4 to 1.35 x 10 5 cfu g -1 , and endospore-forming bacteria was 5.68 x 10 2 to 6.67 x 10 3 cfu g -1 . The number of PPFM was relatively lower compared to the other group of bacteria analyzed. However, these phyllosphere bacteria might contribute to the quality of lalaban diet as source of pyrroloquinoline quinone (PQQ), a novel vitamin which can act as antistroke or antioxidant. Key words: phyllosphere bacteria, PPFM, Indonesian leafy salad