用湿和半干的收获后方法加工的特种咖啡豆中的水吸附异热体的数学建模
Gentil A Collazos-Escobar1,2, Valeria Hurtado-Cortés1, Andrés Felipe Bahamón-Monje3
1Centro Surcolombiano de Investigación en Café (CESURCAFÉ), Departamento de Ingeniería Agrícola, Universidad Surcolombiana, 410001, Neiva-Huila, Colombia.
Scientific reports
|January 31, 2025
概括
这项研究模拟了通过湿和半干方法加工的咖啡豆中的水吸附. 支持矢量机 (SVM) 模型准确预测水分含量,有助于咖啡质量管理.
科学领域:
- 食品科学 食品科学 食品科学
- 农业工程 农业工程
- 物理化学 物理化学
背景情况:
- 吸水对于咖啡豆的储存稳定性至关重要.
- 收获后的加工方法 (湿和半干) 影响咖啡豆的特性.
- 了解水吸附有助于防止腐烂和保持质量.
研究的目的:
- 实验评估和数学建模在特种咖啡豆中的水吸附同热体.
- 调查收获后方法,水活动和温度对水分含量的影响.
- 确定最准确的模型来预测平衡水分含量.
主要方法:
- 使用动态露点方法 (DDI) 在各种温度 (25-45°C) 中实验性确定吸附等温.
- 使用12个常规方程和4种机器学习技术 (SVM等) 进行数学建模. ) 的情况.
- 模型验证使用25%的数据,并通过多因素差异分析 (ANOVA) 进行选择.
主要成果:
- 咖啡豆表现出II型S形吸附同热体 (布鲁纳尔-埃梅特-泰勒分类).
- 温度显著影响了吸附曲线 (p < 0.05).
- 半干加工的豆类由于其粘性涂层而减少了水的吸收.
- 支持矢量机 (SVM) 模型实现了高精度 (MRE < 1%,R2adj > 99%).
结论:
- 在不同的条件下,SVM模型准确地预测咖啡豆平衡水分含量.
- 这种预测模型可以提高储存期间的实时咖啡质量管理.
- 了解水吸附动态对于优化收获后加工和储存策略至关重要.
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