Ultrafiltration of caramel color solutions reduces 5-hydroxymethyl-2-furaldehyde

Add time:07/14/2019    Source:sciencedirect.com

Safety uncertain was always a problem related to the Maillard reaction in heat treatment at a presence of carbohydrate. Early researches have detected caramel color contains 5-hydroxymethyl-2-furaldehyde which is toxic and should be removed from caramel color as much as possible. In the present paper, the effects of ultrafiltration on reducing 5-hydroxymethyl-2-furaldehyde in caramel color solutions were investigated. Results showed that 5-hydroxymethyl-2-furaldehyde could be filtered through 10 kDa cut-off membrane absolutely, while, the retentate's browning intensity was increased significantly. All data show that ultrafiltration is an effective means to reduce 5-hydroxymethyl-2-furaldehyde content and increase browning intensity of caramel color solutions, which might be used in producing healthier caramel colors.

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