Research on adsorption capacity of organically modified Na-montmotillonite for Aflatoxin B₁

Authors

SUN Siyuan, College of Food Science & Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
DIAO Enjie, College of Life Science, Huaiyin Normal University, Huaian, Jiangsu 223300, China
LI Xiangyang, College of Food Science & Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
CHU Xuan, College of Food Science & Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
WANG Jiasheng, College of Food Science & Engineering, Shandong Agricultural University, Taian, Shandong 271018, China
DONG Haizhou, College of Food Science & Engineering, Shandong Agricultural University, Taian, Shandong 271018, China

Abstract

Na-montmotillonite (Na-MMT) was organically modified using Octadecy Trimethyl Ammonium Bromide (OTMAB) as a modifier to improve its adsorption capacity of aflatoxin B₁ (AFB₁). The modified Na-MMT is characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Scanning electron microscopy (SEM), and Thermogravimetric analysis (TGA). The results showed that the OTMAB was intercalated into the Na-MMT, expanded its interlayer spacing (d_0.01), and increased its specific surface area. The adsorption isotherm of AFB₁ on the modified Na-MMT is followed the Langmuir equation. The maximum adsorption capacity (q_max) and the Langmuir adsorption coefficient (k) of modified Na-MMT for AFB₁ were 34.25 mg/g and 3.65 L/mg, respectively, which were both larger than those of Na-MMT (i.e. q_max=28.74 mg/g, k=2.37 L/mg), indicated that the organic modification could increase the adsorption capacity of Na-MMT for AFB₁.

Publication Date

3-28-2017

First Page

66

Last Page

70

DOI

10.13652/j.issn.1003-5788.2017.03.015

Recommended Citation

Siyuan, SUN; Enjie, DIAO; Xiangyang, LI; Xuan, CHU; Jiasheng, WANG; and Haizhou, DONG (2017) "Research on adsorption capacity of organically modified Na-montmotillonite for Aflatoxin B₁," Food and Machinery: Vol. 33: Iss. 3, Article 14.
DOI: 10.13652/j.issn.1003-5788.2017.03.015
Available at: https://www.ifoodmm.cn/journal/vol33/iss3/14

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