The potential of Cilembu sweet potato (Ipomoea batatas L.) as a growth medium for Staphylococcus aureus and Escherichia coli

Cilembu Sweet Potato Staphylococcus aureus Escherichia coli Alternative Media

Authors

  • Ari Nuswantoro
    arinuswantoro82@gmail.com
    Department of Medical Laboratory Technology, Poltekkes Kemenkes Pontianak, Pontianak, West Kalimantan, Indonesia, Indonesia https://orcid.org/0000-0001-9525-393X
  • Merda Sri Rahayu Department of Medical Laboratory Technology, Poltekkes Kemenkes Pontianak, Pontianak, West Kalimantan, Indonesia, Indonesia
  • Imma Fatayati Department of Medical Laboratory Technology, Poltekkes Kemenkes Pontianak, Pontianak, West Kalimantan, Indonesia, Indonesia
  • Syopingi Syopingi Department of Medical Laboratory Technology, Poltekkes Kemenkes Pontianak, Pontianak, West Kalimantan, Indonesia, Indonesia
  • Maretalinia Maretalinia Ph.D. program in Demography, Institute for Population and Social Research, Mahidol University, Phutthamonthon District, Nakhon Pathom, Thailand, Thailand
March 21, 2024
March 31, 2024

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The media aims to store, reproduce, and identify bacteria but has disadvantages such as being expensive, containing chemicals, and being easily damaged due to contamination. Therefore we need an alternative media that can overcome these limitations. Cilembu sweet potato (Ipomoea batatas, L.) is a natural ingredient that is easy to obtain and contains sufficient nutrients so it has the potential to be used as a basic ingredient for growth media. The purpose of this study was to determine the potential of Cilembu sweet potato flour as an alternative medium for the growth of Staphylococcus aureus and Escherichia coli bacteria with a quasi-experimental design. Cilembu sweet potato flour is obtained by cleaning, chopping, drying in the oven, crushing with a blender, and sifting the tubers to obtain fairly fine flour. The flour was dissolved in agar and then inoculated with S. aureus and E. coli, each with 16 replications. The results showed that the average number of S. aureus colonies was 119.12 CFU (169.2 CFU in control) while E. coli was 160.56 CFU (221.2 CFU in control). The Mann-Whitney test showed that there was a difference in the number of S. aureus colonies on alternative media and NA (p = 0.006 ≤ 0.05), but there was no difference between the number of E. coli colonies on alternative media and NA (p = 0.057 > 0.05). Finally, there was a difference in the number of S. aureus and E. coli colonies on alternative media (p = 0.04 ≤ 0.05). The nutritional composition shows that Cilembu sweet potato flour has more potential to replace NA as a growth medium for E. coli than for S. aureus.

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