PERBANDINGAN MEDIA UBI PUTIH (Ipomea Batatas Linneaus) DAN UBI UNGU (Ipomoea batatas var Ayumurasaki) SEBAGAI MEDIA ALTERNATIF AGAR NUTRIENT UNTUK PERTUMBUHAN Staphylococcus aureus

This research was conducted at the STABA microbiology laboratory and the Bogor Health Vocational School from January to February 2024. The aim of this research was to determine the comparison of white sweet potato and purple sweet potato media as alternative media for providing nutrients for the growth of S.aureus. with a total of 3 treatments and 6 repetitions with the method using total plate number (ALT). The type of research used is laboratory experimental, and uses the pour plate technique. The growth of S.aureus on white sweet potatoes is round, the size of small co lonies is 0.1cm, the surface is smooth and the color of the colonies is milky white, and the growth of S.aureus on purple sweet potatoes is round, the size of small colonies is 0.1cm, the surface is smooth and the color of the colonies white. This is shown in the growth of S.aureus. It was found that the highest number of white sweet potato bacteria was in the 10% (1.7x106) CFU/ml white sweet potato flour media treatment, while the smallest bacterial growth was in the 5% (4.1x105) CFU/ml purple sweet potato flour media. The results of the research show that white sweet potatoes are one of the best alternative media to use than purple sweet potatoes because the nutritional content and number of bacteria that grow are superior to purple sweet potatoes.

Keywords: White sweet potato, purple sweet potato, Staphylococcus aureus.