Effect of roller material used in mill and liming treatments on color tone and quality of non-centrifugal sugar
2009
Ujihara, K.(National Agricultural Research Center for Kyushu Okinawa Region, Koshi, Kumamoto (Japan)) | Yoshimoto, M. | Wada, K. | Nagai, R. | Hirose, N. | Teruya, R.
The effects of the roller material used in mill and liming treatments on the color tone, nutritional and functional components and sensory characteristics of non-centrifugal sugar were investigated. The iron roller in mill and liming treatments were responsible for the dark color in commercially available non-centrifugal sugar, suggesting an acceleration in the amino-carbonyl reaction by iron during the liming treatment. Use of the stainless-steel roller in mill but not liming treatment depressed the amino-carbonyl reaction, resulting in a light tone non-centrifugal sugar. The light tone non-centrifugal sugar had lower iron and calcium contents than that obtained using the iron roller for the same treatment. No difference in potassium and magnesium content, amino acid components, sucrose content, and polyphenolic content was observed between the light tone and dark tone non-centrifugal sugar when the iron roller was used in the combined mill and liming treatment. Moreover, the light tone non-centrifugal sugar was superior to the dark tone using the iron roller in the combined treatment on the sensory evaluation.
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