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改性膨润土对藏红花花瓣中花青素的吸附特性研究

Adsorption characteristics of modified bentonites for purification of anthocyanin from saffron tepal.

作者信息

Oliaei Torshizi Hasan, Oliaei Samieh

机构信息

Department of Chemistry, Faculty of Sciences Ferdowsi University of Mashhad Mashhad Iran.

Department of Plant Production Saffron Institute, University of Torbat Heydarieh Torbat Heydarieh Iran.

出版信息

Food Sci Nutr. 2024 Sep 25;12(11):9136-9150. doi: 10.1002/fsn3.4388. eCollection 2024 Nov.

DOI:10.1002/fsn3.4388
PMID:39620041
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11606871/
Abstract

In this study, anthocyanin was extracted from saffron tepals utilizing the ultrasound-assisted extraction method. The adsorbents of raw bentonite (RB), acid activation of bentonite (AA) thermal activation of bentonite (TA), and acid and thermal activation of bentonite (ATA) were employed to separate anthocyanin from solution. The influence of the operating parameters was evaluated. The isotherm study demonstrated that anthocyanin adsorption on adsorbents could be fitted better by the Langmuir equation than the Freundlich equation. A good agreement between the predicted consequences of the pseudo-second-order model and empirical data was provided. Thermodynamic parameters indicated that anthocyanin was adsorbed in an exothermic and physical process. Findings presented that the best adsorption performance of anthocyanin related to ATA with 2.25 mg/g adsorption capacity which was more than 1.55, 1.75, 1.88 mg/g for RB, AA, and TA, respectively. It was due mainly to the increased surface area by both thermal and acid activation of raw bentonite.

摘要

在本研究中，采用超声辅助提取法从藏红花花被片中提取花青素。使用未处理膨润土（RB）、酸化膨润土（AA）、热活化膨润土（TA）以及酸碱复合活化膨润土（ATA）作为吸附剂从溶液中分离花青素。评估了操作参数的影响。等温线研究表明，与弗伦德利希方程相比，花青素在吸附剂上的吸附更符合朗缪尔方程。伪二级模型的预测结果与实验数据吻合良好。热力学参数表明，花青素的吸附是一个放热的物理过程。结果表明，ATA对花青素的吸附性能最佳，吸附容量为2.25mg/g，分别比RB、AA和TA的1.55mg/g、1.75mg/g和1.88mg/g高。这主要归因于原膨润土经热活化和酸活化后表面积增加。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/79635a2d8e2f/FSN3-12-9136-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/2d6dc6fd8f64/FSN3-12-9136-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/3b481b974acd/FSN3-12-9136-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/79635a2d8e2f/FSN3-12-9136-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/2d6dc6fd8f64/FSN3-12-9136-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/1ccff21fcbc4/FSN3-12-9136-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/adeb1c9f33e5/FSN3-12-9136-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/38b2690cd1c3/FSN3-12-9136-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/3b481b974acd/FSN3-12-9136-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f970/11606871/79635a2d8e2f/FSN3-12-9136-g007.jpg

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