A study on the effect of natural preservatives towards fiber enriched milk tablets at different storage conditions: article

This study was conducted to determine the antimicrobial effects of different percent of natural preservative added to the fiber enriched milk tablets at light and dark storage conditions. Tablet samples prepared are made by using 5 different fiber enriched materials which are carrots, spinach, mango, watermelon and dragon fruit. Natural preservatives (0% w/v, 5% w/v, 10% w/v) were added to the tablet samples to study its antimicrobial effects onto fiber enriched milk tablets. Tablet samples prepared were stored in a lighted storage room while another set of samples will be stored in a dark storage room. All the samples’ initial color space (L*, a*, b*) were measured to determine its total color changes, ∆E weekly for 2 months. After 2 months, the tablet samples were placed onto nutrient plates and left to be cultivated for 3 days. The fungal/microbial growth were observed and recorded to study the effectiveness of natural preservatives as an antimicrobial ingredient. Through this study, turmeric is proven to be not a good natural preservatives or antimicrobial as all the results collected does not follow the theory stated. Some errors might due to the carelessness during the experiment like contamination. In future studies, it is recommended to replace the natural preservatives with other materials. Honey is highly suggested for the next future studies.