A Study of Microbiological Contamination Potential in Red Guava Juice Products ( Psidium guajava l.) in Surakarta City

Abstract

Red guava juice is one of the fruit juice favorites in Surakarta. Consuming red guava juice is believed to improve the body's immunity. Fruit juice consumption is part of a healthy life habit. With a change in life habits now increased, a great number of fruit juice sellers along the streets of Surakarta City. This research aimed to investigate potential microbiological contaminations in the red guava juice products sold in Surakarta City. This research involved red guava juice sampling and analysis for total plate count (TPC), total coliform count, total Staphylococcus count, and total Salmonella-Shigella count. The results showed that the levels of contamination in the red guava juice samples were relatively high. The following results were obtained from the red guava juice samples: TPC between 3.29 ± 4.65 and 8.88 ± 0.22 log CFU/ml; total coliform count between 1.54 ± 2.18 and 4.57 ± 0.21 log CFU/ml; total Staphylococcus count between 3.82 ± 0.47 and 7.18 ± 0.21 log CFU/ml; and total Salmonella-Shigella count between 1.41 ± 1.99 and 4.76 ± 0.08 log CFU/ml. By and large it can be said that the red guava juice products sold in Surakarta City had yet to meet the standard for consumption and that it is important for the government to take an immediate measure to address this issue.