Growth and Quality of Soybean Sprouts Affected by Chitosan Treatment and Watering Time = Growth and Quality of Soybean Sprouts Affected by Chitosan Treatment and Watering Time

다국어 초록 (Multilingual Abstract)

The effects of chitosan concentrations (0.05 and 0.1%) and watering times (1 and 5 min/every 20 min) on growth and selected quality of soybean sprouts were evaluated. In chitosan concentration studies, soaking of soybeans in 0.05% chitosan solution was more effective in increasing total weight of soybean sprouts than soaking in 0.1% chitosan solution. In chitosan treatment and watering time studies, soybeans were soaked in water (W) or 0.05% chitosan solution (CH) for 8 h and then cultivated by spraying water for 1 min (W-1 and CH-1) or 5 min (W-5 and CH-5) for 3 days at 20±2oC. Increase in watering time from 1 min to 5 min increased total weight of soybean sprouts (W-1 vs. W-5 and CH-1 vs. CH-5). At the same watering time, chitosan treatment was more effective in increasing total weight than water treatment (W-1 vs. CH-1 and W-5 vs. CH-5). No significant differences in hardness, mineral content, and DPPH radical scavenging activity were observed among four treatment groups. However, the moisture content increased with increasing watering time. Total free amino acid contents of W-5, CH-1, and CH-5soybean sprouts were all comparable, but higher than that of W-1 soybean sprouts. Increased shelf life of CH-5 soybean sprouts, compared with W-5, was not observed during storage at 10°C for 21 days.