Adsorptive characteristics of aflatoxin B1 in the presence of purified clinoptilolite rich mineral and lactobacillus plantarum S2
by
Bulut Albayrak, Çisem.
Title
:
Adsorptive characteristics of aflatoxin B1 in the presence of purified clinoptilolite rich mineral and lactobacillus plantarum S2
Author
:
Bulut Albayrak, Çisem.
Personal Author
:
Bulut Albayrak, Çisem.
Publication Information
:
[s.l.]: [s.n.], 2012.
Physical Description
:
xviii, 201 leaves.: ill. + 1 computer laser optical disc.
Abstract
:
The human diet contains a wide variety of natural carcinogens. Aflatoxin B1 (afB1) is the most toxic and most prevalent compound. Both probiotic lactic acid bacteria and clinoptilolite rich zeolite mineral have potential to eliminate this toxin. This study was planned in order to investigate adsorptive characteristics of afB1 by local purified clinoptilolite rich mineral (PNZ) and probiotic strains which were isolated from different natural sources (fermented cabbage, boza ) in the present work. PNZ and isolated strains were characterized by using several physical, chemical and biological techniques. Adsorption characteristics of both probiotic lactobacilli and PNZ were investigated in simulated gastrointestinal solutions. The chosen probiotic strain was identified as L. plantarum .The studies indicated that, both L. plantarum S2 and PNZ can eliminate afB1 in the phosphate buffer solution. They are more effective when they were used together (45% for L. plantarum S2, 32% for PNZ, 86%for L. plantarum S2 and PNZ together). AfB1 adsorption equilibrium data were best represented by Sips isotherm model for PNZ, whereas by Langmuir isotherm model for L. plantarum S2. Thermodynamic studies implied that afB1 adsorption by mineral and L. plantarum S2 was physical adsorption. Experiments with different temperatures showed that afB1 adsorption by PNZ was exothermic but afB1 adsorption by lactobacilli was endothermic. Adsorption kinetics were analysed by diffusional models and reaction models for afB1 adsorption by PNZ mineral. Both film diffusion and /or intra particle diffusion were effective on adsorption kinetics depending on the experimental conditions (Temperature, pH, agitation speed, etc).
Subject Term
:
Zeolites.
Clinoptilolite.
Lactic acid bacteria.
Lactobacillus plantarum.
Aflatoxins.
Added Author
:
Ülkü, Semra.
Added Corporate Author
:
İzmir Institute of Technology. Chemical Engineering.
Added Uniform Title
:
Thesis (Doctoral)--İzmir Institute of Technology:Chemical Engineering.
İzmir Institute of Technology:Chemical Engineering--Thesis (Doctoral).
Electronic Access
:
Library | Material Type | Item Barcode | Shelf Number | Status |
---|
IYTE Library | Thesis | T001064 | TP248.S5 B93 2012 | Tez Koleksiyonu |
IYTE Library | Supplementary CD-ROM | ROM2012 | TP248.S5 B93 2012 EK1 | Tez Koleksiyonu |