双(2-乙基己基)磺基琥珀酸钠反向胶束提取花生蛋白的传质过程

Q2 Agricultural and Biological Sciences Grain Oil Science and Technology Pub Date : 2024-03-01 DOI:10.1016/j.gaost.2024.01.006
Chenxian Yang, Tianci Li, Tingwei Zhu, Xiaojie Duan, Yibao Chen, Yandong Xu, Fusheng Chen, Kunlun Liu
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引用次数: 0

摘要

利用反向胶束的液-液萃取法可以同时提取油籽中的脂质和蛋白质,近年来这种方法越来越受欢迎。然而,有关传质过程和模型的研究较少,这有助于更好地控制油脂和蛋白质的提取过程。本文研究了双(2-乙基己基)磺基琥珀酸钠(AOT)/异辛烷反向胶束萃取花生蛋白的传质过程。考察了搅拌速度(0、70、140 和 210 r/min)、萃取温度(30、35、40、45 和 50 °C)、花生粉粒径(0.355、0.450、0.600 和 0.900 mm)和固液比(0.010、0.0125、0.015、0.0175 和 0.020 g/mL)对萃取率的影响。结果表明,萃取率分别随温度升高、粒度减小和固液比增加而增加,而搅拌速度对萃取率的影响很小(P> 0.05)。根据阿伦尼乌斯方程计算,萃取过程的表观活化能为 10.02 kJ/mol,阿伦尼乌斯常数(A)为 1.91。反应速率常数与初始颗粒半径倒数的平方(1/r02)之间呈线性关系(P < 0.05)。这一现象与收缩核心模型相吻合。简而言之,萃取过程是由蛋白质从颗粒的原生区界面通过反应区扩散控制的,符合一阶反应。建立了反向胶束萃取花生蛋白的传质动力学,并通过实验结果进行了验证。这些结果为花生蛋白分离和纯化的工业化生产提供了重要的理论指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Mass transfer process of peanut protein extracted by bis(2-ethylhexyl) sodium sulfosuccinate reverse micelles

The liquid-liquid extraction method using reverse micelles can simultaneously extract lipid and protein of oilseeds, which have become increasingly popular in recent years. However, there are few studies on mass transfer processes and models, which are helpful to better control the extraction process of oils and proteins. In this paper, mass transfer process of peanut protein extracted by bis(2-ethylhexyl) sodium sulfosuccinate (AOT)/isooctane reverse micelles was investigated. The effects of stirring speed (0, 70, 140, and 210 r/min), temperature of extraction (30, 35, 40, 45, and 50 °C), peanut flour particle size (0.355, 0.450, 0.600, and 0.900 mm) and solid-liquid ratio (0.010, 0.0125, 0.015, 0.0175, and 0.020 g/mL) on extraction rate were examined. The results showed that extraction rate increased with temperature rising, particle size reduction as well as solid-liquid ratio increase respectively, while little effect of stirring speed (P > 0.05) was observed. The apparent activation energy of extraction process was calculated as 10.02 kJ/mol and Arrhenius constant (A) was 1.91 by Arrhenius equation. There was a linear relationship between reaction rate constant and the square of the inverse of initial particle radius (1/r02) (P < 0.05). This phenomenon and this shrinking core model were anastomosed. In brief, the extraction process was controlled by the diffusion of protein from the virgin zone interface of particle through the reacted zone and it was in line with the first order reaction. Mass transfer kinetics of peanut protein extracted by reverse micelles was established and it was verified by experimental results. The results provide an important theoretical guidance for industrial production of peanut protein separation and purification.

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来源期刊
CiteScore
7.30
自引率
0.00%
发文量
69
审稿时长
12 weeks
期刊最新文献
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