Study of Optimum Conditions for Soy Milk Production by Response Surface Methodology

Main Article Content

Sukrichaya Hemathulin
Soken Rin
Reungtip Reungtip

Abstract

The objective of this research was to study the optimum conditions for the production of soy milk by response surface methodology. Box-Behnken Design was utilized to study three factors affecting product quality including temperature, time and amount of carrageenan in soy milk production process. The temperature, time and amount of carrageenan used were 80-100°C, 15-30 min and 0.00-0.08%, respectively. Quality (physical, chemical and microbial) examination and sensory evaluation of the products were performed. Optimum points of the responses were predicted by using a statistical program to generate the response surface plot. From the experiments, it was found that in all conditions, total microorganisms, yeasts and molds were in the safety standards for consumers. The optimum conditions for soy milk production were boiling at 92.47°C for 24.56 minutes and using carrageenan with the amount of 0.041% resulting in soy milk with high protein content, viscosity acceptable to consumers and high overall acceptability. It was also found that the values of dependent variables (protein content and viscosity) predicted by the equation were similar to those obtained from the experiments.

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Research paper

References

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