Test for Formalin Content in Consumed Fish at Several Traditional Markets in Surakarta Using Natural Extract of Dragon Fruit Peel

Food has an expiration date. To make food have a longer shelf life, manufacturers use preservatives as solution. There are that safe to and prohibited from being used. One of the chemical used in is formalin. Formalin usually added processed meat fish foods. The purpose this study was detect presence formaldehyde preservative consumption sold several markets Surakarta. method experimental. As indicator study, natural ingredients were used, namely dragon fruit peel extract. This research expected be solution alternative detecting content effort choose healthy without containing harmful chemicals. results found formaldehyde, shark, salmon, tilapia, mackerel, flying fish. If consumed long term, formalin can cause damage kidney function, liver cancer.