PENGARUH JENIS BAKTERI ASAM LAKTAT DAN LAMA FERMENTASI TERHADAP MUTU TEPUNG PISANG TANDUK (Musa corniculata) (Effect of Lactic Acid Bacteria and Fermentation Time on Quality of Tanduk Banana (Musa corniculata) Flour)

摘要

Modification of banana flour by fermentation could change its quality. Fermentation of the whole banana could increase mineral content of banana flour. This research aimed to know the effect of the type of lactic acid bacteria and fermentation time on quality of whole tanduk banana flour. This research used completely randomized design with the treatments were control (without fermentation), spontaneous fermentation, Lactobacillus bulgaricus, Lactobacillus casei, Lactobacillus plantarum for 24 and 48 hours. The result showed that fermentation by L. bulgaricus for 24 hours was optimum based on the number of lactic acid bacteria colony , pH and lactic acid contain. Modification of whole banana flour significantly i ncreas ed t he value of red/ green “a” color, but decreas ed ash content, protein and minerals compared to native banana flour. It also significantly increased amylose content in fermentation using L. bulgaricus. The solubility of modified banana flour was decreased, while the water absorption capacity was significantly increased compared to native flour. Pasting p roperties of modified flour using L. casei for 24 hours were significantly increased for the peak viscosity, breakdown, final viscosity, and setback, however the values of peak time and pasting temperature were reduced. This mean that the modification of whole banana flour has the potential to changed the characterictic of physicochemical, functional properties, and pasting properties of banana flour.