"Identifikasi dan Penetapan Kadar Formalin pada Tahu yang Diproduksi di Ponorogo dengan Metode Spektrofotometri UV-Vis"

Tofu is a food made from soybeans. Tofu is a food source of
protein that is consumed by many people. Besides being easy to know, it also has
a cheap price. Tofu has a large amount of water so it is easily overgrown with
microbes, so not infrequently the tofu is added to preservative such as formalin to
make it more durable. Based on social media, many tofu products contain
formalin as a preservative.
The research problem formulation is whether tofu produced from 6
producers in Ponorogo contains formalin, and what is the amount of formalin in
tofu produced in Ponorogo. The analytical method used includes qualitative
analysis followed by quantitative analysis using the UV-Vis Spectrophotometry
method.
The results of analysis, one of the six positive samples containing
Formalin with a content of 245.5 ppm.
Keywords: Formalin, Tahu, UV-Vis Spectrophotometry