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High-power ultrasound as pre-treatment in different stages of soymilk manufacturing process to increase the isoflavone content
Ultrasonics Sonochemistry ( IF 8.7 ) Pub Date : 2018-07-31 , DOI: 10.1016/j.ultsonch.2018.07.044
M. Morales-de la Peña , O. Martín-Belloso , J. Welti-Chanes

Ultrasound (US) was applied as a pre-treatment in hydrated soybeans (HSB) and soybean slurry (SBS) during soymilk elaboration process to evaluate the feasibility of increasing the isoflavone content (IC) in the resultant soymilk. A predictive model and optimum US processing conditions were obtained by response surface methodology (RSM) using a three-level-three-factor Box-Behnken statistical design (BBD) in which US amplitude (50, 75, and 100 %), temperature (30, 45, and 60 °C), and time (20, 40, and 60 min) were selected as independent variables. Most of the US treatments applied in the HSB or SBS caused a significant increase (3 - 62%) in the total IC of the obtained soymilks over the control soymilk (6.97 mg/100mL). However, the IC of the resultant soymilks from sonicated HSB (11.38 mg/100 mL) was significantly higher than that in soymilk prepared from US-treated SBS (8.66 mg/100 mL). Experimental data were fitted into a 2nd-order-polynomial model and processing parameters were optimized (100% amplitude, 30°C, 20 min) to get the highest predicted and experimental IC, 11.38 and 12.8 mg/100 mL, respectively. These results indicated that US is a potential technology that could be implemented during soymilk manufacturing processing as pre-treatment of HSB to obtain soymilk with high isoflavone content and consequently better functionality.



中文翻译:

大功率超声波在豆浆制造过程的不同阶段进行预处理,以提高异黄酮的含量

在豆浆加工过程中,将超声(美国)作为预处理剂用于水合大豆(HSB)和大豆浆(SBS)中,以评估提高所得豆浆中异黄酮含量(IC)的可行性。通过使用三级三因素Box-Behnken统计设计(BBD)的响应面方法(RSM)获得了预测模型和最佳US处理条件,其中US振幅(50%,75%和100%),温度(选择30、45和60°C)和时间(20、40和60分钟)作为自变量。在HSB或SBS上使用的大多数美国处理方法均使获得的豆浆的总IC值比对照豆浆(6.97 mg / 100mL)显着增加(3-62%)。但是,从超声处理的HSB中得到的豆浆的IC值(11。38毫克/ 100毫升)明显高于美国处理过的SBS制成的豆浆(8.66毫克/ 100毫升)。实验数据拟合为2第二阶多项式模型和处理参数进行优化(100%振幅,30°C,20分钟),以获得最高的预测和实验IC,11.38和12.8毫克/ 100毫升,分别。这些结果表明,美国是潜在的技术,可以在豆浆制造过程中实施HSB的预处理,以获得具有较高异黄酮含量并因此具有更好功能的豆浆。

更新日期:2018-07-31
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