Determination of Formaldehyde in the Production of Beancurd
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
Formaldehyde was used in the production process of the beancurd using soybean and gluconic acid-δ lactone as main materials. The formaldehyde contents in tofu filtrate, liquid separated from beancurd and the distillate of beancurd were measured by acid-base titration. Under the same experimental conditions and in the tofu samples with same weight, formaldehyde contents in the distillate, filtrate and liquid separated from beancurd were reduced in turn. The recovery rate of formaldehyde with this method was higher than 90 % (not including the beancurd residue). This research provided a simple and accurate method for the determination of formaldehyde in the production of beancurd.
