Abstract. Traditional practice of nutmeg sun-drying causes some fungi such as Aspergillus
flavus to grow. One of the secondary metabolites of A. flavus named aflatoxin (AFs) is known
to be carcinogenic, so the dried nutmeg kernel must be aflatoxin-free in the trading. Aflatoxin
detection requires time and costly, make it difficult to conduct at the farmers level. This study
aims to develop a simple and low-cost method to detect aflatoxin at the farmer level. Fresh
nutmeg seeds were dried in two ways; sundried everyday (continuous), and sundried every two
days (intermittent), both for around 18 days. The dried nutmeg seeds are then stored in a rice
sack under normal conditions until the fungi grow, then they were opened and the images of
kernels were captured using a CCD camera, with normal light and UV light sources. Visual
observation on images captured in normal light source was able to detect the presence of fungi
on dried kernels, by 28.0% for continuous and 26.2% for intermittent sun-drying. Visual
observation on images captured in UV light source was able to detect the presence of aflatoxin
on dried kernels, indicated by blue luminance on kernel, by 10.4% and 13.4% for continuous
and intermittent sun-drying