Study On Effect Of Germinating Condition On Soybean Sprouts Production

The article studied the effects of single soaking condition,comprehensive soaking conditions,soaking methods and growth regulator on soybean sucked water rate,sprout rate,the growth and nutrition compositions of soybean sprouts in order to provide industrial,better quality and safe soybean sprouts with theory and practice. The results were as follows:1 The new soybean variety "Nan Nong 86-4" was used to study the effect of single soaking condition on soybean sucked water rate,sprout rate,the growth and nutrition compositions of soybean sprouts. Results indicated that under different soaking temperatures and different soaking water volumes,equations between the soybean sucked water rate(y) and soaking time(x) had been found,and the effect of single soaking condition on the growth and nutrition compositions of soybean sprouts was remarkablly different. According to the appearance of soybean sprouts ,the optimum soaking water volumes were 2 times of the soybean weight and the optimum soaking temperature was 25℃;According to the different nutrition compositions ,the optimal soaking condition was different.2 The soybean variety "323" was used to study the effect of L₉ (3⁴) orthogonal experiment of comprehensive soaking conditions on soybean sucked water rate,sprout rate,the growth and nutrition compositions of soybean sprouts. According to the effects of the comprehensive conditions on soybean sucked water rate,sprout rate and the growth of soybean sprouts,the most important factor was soaking temperature (B) ,the more important was soaking time(C),and the less important was soaking water volume(A).The optimal cross was as follows:temperature was30℃;water volumes were 70ml or 40ml;and time was 6h. According to the effects of the comprehensive conditions on the nutrition compositions of soybean sprouts, the most important factor was soaking time (C) , the more important was soaking temperature (B) ,and the less important was soaking water volume(A).The optimal cross was as follows:temperature was 20℃;water volumes were 70ml or 90ml;and time was 4h.3 The new soybean variety "Nan Nong 86-4" was used to study the effect of soaking methods on soybean sucked water rate,sprout rate and the growth of soybean sprouts. Results indicated that equations between the soybean sucked water rate(y) and soaking time(x) had been found. The method,presoaked soybean in 65℃water for 2 minutes,could increase the soybean sucked water rate and sprout rate, under 10℃, presoaking increased sprout lenghth and decreased root weight, remarkablly. under 15℃, presoaking increase remarkablly the yield. Comparing with the other method that did not presoak the soybean,the results of presoaking were: under 10℃, fresh weight decreased by 2.2%,sprouts length increased by 11.5%,root weight decreased by 6.1% and yield increased by 0.1%;but under 15℃,fresh weight decreased by 1.9%,sprouts length increased by 3.9%,root weight decreased by 3.6% and yield increased by 9.5%.4 The new soybean variety "Nan Nong 86-4" was used to study the effect of growth regulator on soybean sucked water rate,sprout rate and the growth of soybean sprouts. Results indicated that 6-BA and rootless soybean sprouts hormones reduced remarkably soybean sucked water rate ,and also inhibited soybean germination. 10mg/l 6-BA and rootless soybean sprouts hormones diluted 9000 times were the optimum treatments. Comparing with CK, there were remarkable increase in fresh weight,sprout width and yield and remarkable decrease in root weight. Fresh weight increased by 30.20% and 24.56%,root weight decreased by 54.17% and 36.03%,sprout width increased by 68.07% and 42.50%,and yield increased by 28.70% and 20.73%, respectly.