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Microbiological Properties, Dietary Fiber, and Nutritional Content of Fluidized Bed - Dried Local Legumes and Salak Yogurt Powder

dietary fiber fluidized bed dryer lactic acid bacteria local legume nutritional content

Authors

Background: The challenge in making yoghurt powder is that a drying technology is needed to maintain the probiotics in the product. Now, drying technologies of yoghurt powder to extend shelf life are still difficult to adopt in small-micro enterprises (SME). A simple technology, a fluidized bed dryer, could be introduced to make yoghurt powder from local legumes and salak.

Objectives: to analyze the amount of lactic acid bacteria (LAB), dietary fiber, and nutritional content in local legumes and salak powder that it processed with a fluidized bed dryer.

Methods: The research was an experimental design with 4 treatments. The treatments were mungbean (MYP), Garut red bean (RYP), Manonjaya Salak - mungbean (MS-MYP), and Manonjaya Salak - Garut redbean yoghurt powder (MS-MYP). Parameters in the research were microbiological properties, dietary content, and other nutritional content. The measured microbiological properties were the amount of lactic acid bacteria (LAB). Measured other nutritional content were calories, ash, moisture, carbohydrate, fat, protein, sugar, cholesterol, sodium, zinc, iron, and calcium.

Results: All of the yoghurt powder was an amount of LAB above the value of Indonesia National Standard (INS), i.e., 8 x 108 – 1 x 1010 cfu/g. The dietary fiber content in yoghurt powder was higher in products that added Manonjaya salak flour. Total ash, iron, and calcium were higher in peanut yoghurt with the addition of salak flour. However, the sodium content was lower in peanut yoghurt which contains snake fruit flour. The content of other nutrients was relatively the same as legume yoghurt with or without salak flour added.  

Conclusions: Local legume yoghurt powder added with salak flour has a higher content of lactic acid bacteria and dietary fiber than just beans alone. Total ash, especially iron and calcium, has a higher content in peanut yoghurt with added salak flour than legume yoghurt alone.

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