响应曲面法优化气体射流冲击锥栗脱壳工艺
首发时间:2005-02-21
摘要:为了优化锥栗气体射流冲击脱壳工艺,采用响应曲面法分析了冲击温度(163~197℃)、加热时间(109~311s)及气流速度(6.68~9.73m/s)对于脱壳锥栗品质(失水率、脱壳率、L*)的影响,并建立了相应的预测模型。方差分析的结果表明:冲击温度、加热时间及气流速度对于失水率、脱壳率和L*这三项指标都有着极为显著的影响。优化所得的较优工艺参数为:冲击温度179℃,加热时间278s,气流速度7.83m/s。对应的失水率、脱壳率及L*的预测值分别为:4.14%、86.95和58.65。经试验证明:应用响应曲面法所得到的脱壳工艺参数是可行的。
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Optimization of air-impingement shelling for Castanea henryi using response surface methodology
Abstract:The objective of this study was to derive optimum conditions for Castanea henryi shelling using air-impingement shelling technology. Response surface methodology was employed to analyze the effects of impingement temperature (163-197℃), heating time (109-311s) and airflow rate (6.68-9.73m/s) on the rate of water loss, shelling rate and L*. The prediction models were also established. The analysis of variance revealed that impingement temperature, heating time and airflow rate significantly (99.9% confidence level) affected response variables. Optimum conditions obtained were 179℃ of impingement temperature, 278s of heating time and 7.83m/s of airflow rate. Values predicted by the models for the rate of water loss, shelling rate and L* under optimized conditions are 4.14%, 86.95 and 58.65, respectively. These values were experimentally verified and good agreement between experimental and predicted values was obtained.
Keywords: air-impingement Castanea henryi shelling response surface methodology optimization
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No.1571191251108949****
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