Research on seeds compression-structural damage and castor oil extraction mechanism with in situ observation

IF 2.7 3区农林科学 Q3 ENGINEERING, CHEMICAL

Journal of Food Process Engineering Pub Date : 2024-08-08 DOI:10.1111/jfpe.14708

Liu Yang, Bo Cui, Huan Chen, Junfeng Wu, Zilong Xu, Xuan Xiao, Zhicheng Wang, Shaoyun Song, Yonglin Zhang

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引用次数: 0

Abstract

Castor oil has attracted large attention for wide applications, including lubrication oil and bioenergy resources. Castor seeds mechanical pressing is widely used for oil extraction. To better research castor seeds mechanical-structural damage behavior and oil extraction mechanism during extrusion, a self-developed mechanical pressing test setup combined with in situ observation is built for oil output behavior. Influencing factors of working pressure, speed, temperature and creep time on oil outflow were investigated. The results indicate that seeds squeezing extraction can be divided into three stages, preloading, oil discharging, compressing consolidation stage, matching with pressing cake structural evolution. As working pressure increases, oil yield shows an upper parabola relation with pressure. When pressure exceeding 25 MPa, castor oil yield increasing tends to stabilize, reaching 38%. Speed effect showed down parabola relation on oil yield, opposite to stress factor. Creep time promoted oil output with upper parabola within 720 s. When temperature below 120°C, a linear increasing relation on oil yield presents. Oil yield decreases when above 120°C. This research provides in-depth theoretical guidance for industrial castor oil extraction.

Practical Applications

Castor seeds are rich in oil content. Extracted castor oil has been widely used for industrial applications such as biodiesel, lubricants, medicine. Mechanical extraction working parameters optimization can improve oil yield of castor seeds. The research provides a basic working optimization for castor seeds oil extraction. Castor oil has unique properties and has been proved to be a high promising renewable and independent energy sources. Compared with solvent oil extraction, mechanical oil pressing extraction method has higher oil quality and safety. The mechanical extracted oil is pure without organic solvent. In the research, castor seeds compression-structural damage property and oil extraction mechanism were studied. Besides, the influence factors including compression pressure, speed, temperature and creep time are analyzed, working optimization for castor seeds oil extraction. The research provides important reference value for the mechanical pressing process and mechanical design of castor seeds in the practical applications.

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通过原位观测研究种子压缩结构损伤和蓖麻油提取机理

蓖麻油用途广泛，包括润滑油和生物能源，因此备受关注。蓖麻籽机械压榨被广泛用于榨油。为了更好地研究蓖麻籽在挤压过程中的机械结构损伤行为和榨油机理，建立了一套自主研发的机械压榨试验装置，并结合现场观测对出油行为进行了研究。研究了工作压力、速度、温度和蠕变时间对出油的影响因素。结果表明，种子压榨提取可分为三个阶段，即预压、出油、压缩固结阶段，与压榨饼结构演变相匹配。随着工作压力的增加，出油率与压力呈上抛物线关系。当压力超过 25 MPa 时，蓖麻出油率的增加趋于稳定，达到 38%。速度对出油率的影响呈下抛物线关系，与应力系数相反。当温度低于 120°C 时，出油率呈线性上升关系。当温度高于 120°C 时，出油率会降低。这项研究为工业蓖麻油提取提供了深入的理论指导。提取的蓖麻油已广泛应用于生物柴油、润滑油、医药等工业领域。机械萃取工作参数的优化可以提高蓖麻籽的出油率。本研究提供了蓖麻籽榨油的基本工作优化方法。蓖麻油具有独特的性质，已被证明是一种极具潜力的可再生独立能源。与溶剂榨油法相比，机械压榨榨油法具有更高的油质和安全性。机械榨油不含有机溶剂，油质纯净。本研究对蓖麻籽的压缩结构破坏特性和榨油机理进行了研究。此外，还分析了压缩压力、速度、温度和蠕变时间等影响因素，对蓖麻籽榨油工艺进行了优化。该研究为蓖麻籽的机械压榨工艺和机械设计在实际应用中提供了重要的参考价值。

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来源期刊

Journal of Food Process Engineering 工程技术-工程：化工

CiteScore

5.70

自引率

10.00%

发文量

259

审稿时长

2 months

期刊介绍： This international research journal focuses on the engineering aspects of post-production handling, storage, processing, packaging, and distribution of food. Read by researchers, food and chemical engineers, and industry experts, this is the only international journal specifically devoted to the engineering aspects of food processing. Co-Editors M. Elena Castell-Perez and Rosana Moreira, both of Texas A&M University, welcome papers covering the best original research on applications of engineering principles and concepts to food and food processes.