Publication Search

Cassava tapai is a traditional Indonesian food product produced through the fermentation of cassava (Manihot esculenta) with the help of microorganisms, particularly the yeast Saccharomyces cerevisiae. This product not only has cultural and economic value but also contains bioactive compounds with health benefits, such as probiotics and fermentation metabolites. However, the quality of cassava tapai is significantly influenced by process factors, particularly incubation time. This study aimed to analyze microbial growth and changes in the chemical properties of cassava tapai with varying fermentation times. The study was conducted using an experimental design with fermentation times of 24, 48, and 72 hours at room temperature. The main parameters observed included the number of microbial colonies (cfu/g), pH changes, and alcohol content produced during the fermentation process. The results showed that microbial growth increased significantly, peaking at 48 hours, with the highest colony count compared to other treatments. After 72 hours, the number of colonies decreased, likely due to ethanol accumulation and decreased substrate availability, which reduced microbial activity. The pH value tended to decrease with increasing fermentation time, reflecting the formation of organic acids during the process. Meanwhile, the alcohol content showed an increasing trend from the beginning to the end of fermentation, although the growth rate was relatively slower at 72 hours. These findings confirm that varying incubation length significantly influences microbial dynamics and chemical changes in cassava tapai. The optimal fermentation time is around 48 hours, as this is the phase where the balance between microbial growth, alcohol formation, and sensory characteristics is maintained. The results of this study can serve as a basis for developing standards for cassava tapai production at both household and industrial scales, while also strengthening efforts to preserve traditional foods with a modern scientific approach.

Black sticky rice tapai is a traditional Indonesian fermented food that has long been consumed by the public for its distinctive taste and high cultural value. However, with the increasing demand for functional foods and natural-based products that can support health, attention for black sticky rice tapai has shifted from being simply a traditional food to an object of scientific study in the nutraceutical field. Black sticky rice, the basic ingredient for tapai, contains important bioactive compounds such as anthocyanins, flavonoids, B-complex vitamins, and soluble fiber, which have been shown to play a role in lowering cholesterol levels, inhibiting LDL cholesterol oxidation, and increasing HDL cholesterol levels in the blood. The fermentation process further enhances the biological activity of these compounds, making black sticky rice tapai have a higher therapeutic value than ordinary black sticky rice. The purpose of this study was to examine the potential of black sticky rice tapai as a natural, tradition-based solution for lowering cholesterol levels, while also supporting the development of local foods into modern health products that are safe, effective, and affordable. The study was conducted using a descriptive literature review method of various scientific articles, textbooks, and relevant research results that discuss the nutritional content of black sticky rice, the benefits of fermentation, and the effect of active components on lipid metabolism. The study results show that regular consumption of black glutinous rice tapai has the potential to lower total and LDL cholesterol levels and increase HDL through a combination of antioxidant effects, cholesterol binding by fiber, and increased fat excretion. In addition, the potential of black glutinous rice tapai as a nutraceutical is also relevant in supporting the preservation of local-based culture and food independence.