Chemical composition and anthocyanin content
The major component of black glutinous rice cracker was carbohydrate (Table 3) since the main ingredient was flour. Protein content of cracker was appreciably high (16.51%wb). According to the study of Sompong et al. (2011), black rice varieties from Thailand had higher protein content than those from China and Sri Lanka. Lipid content was mostly from coconut milk. Ash content of product was higher than black glutinous rice flour studied by Sompong et al. (2011) resulted by Panang paste component such as galangal, bergamot peel, coriander root and lemon glass added. Anthocyanin content in cracker (28.24 mg/kg) was less than black glutinous rice reported by Satharut and Sudarat (2012) as 103.45 mg/100 g since white glutinous rice flour was added as ingredient. Moreover, Kong and Lee (2010) who studied milling fraction of black rice found that whole grain, endosperm and rice bran had different amount of anthocyanin. Therefore, commercial black glutinous rice flour used in this experiment might be having less anthocyanin content.