Articles
Production of a cellulosic fiber from tomato wastes
Article number
1445_26
Pages
185 – 192
Language
English
Abstract
Cellulose is one of the most abundant natural polymers in the biosphere.
It is found in the cell walls of plants where it provides rigidity to the cell.
Cellulosic fibers are of interest for the food industry due to their water and oil holding and emulsifying properties.
Cellulose based products can be used as thickeners and stabilizers for a wide range of food applications.
For this study, cellulosic fibers are produced from tomato remains of the industry aiming to utilize the waste to produce a value-added product.
Dry tomato waste obtained after tomato sauce production was delivered from a local company.
Production of the cellulose was carried out in a 4-step process.
Firstly, hot water extraction was performed to remove sugars, phenolics and water soluble pectins.
Then acidic extraction was performed to remove acid soluble pectins.
After that, a basic extraction was performed to remove hemicelluloses.
Finally, bleaching was performed to remove lignin and pigments.
The fibers were then air-dried and milled using a ball mill.
Techno functional properties of the fibers such as water and oil holding and swelling capacity were investigated.
Particle size after the ball milling was measured by laser scattering method.
FTIR spectra was obtained.
The final product’s cellulose content was measured by a standard gravimetric method.
Tomato waste fiber was shown to possess significant water holding (9 g water g‑1), oil holding (2 g oil g‑1) and swelling (5-6 mL g‑1) properties.
FTIR spectra showed that the produced fiber had a similarity score of 85% to micro fibrillated cellulose from the program’s library.
Gravimetric analysis showed that the product was more than 90% holocellulose (cellulose and hemicellulose) and 80% cellulose.
A 4-step isolation process was used to produce cellulose fibers from the waste of tomato industry.
The results showed that the product has similar properties to orange peel fiber and is superior to many commercial fibers from soybean, pea and wheat straw.
It is found in the cell walls of plants where it provides rigidity to the cell.
Cellulosic fibers are of interest for the food industry due to their water and oil holding and emulsifying properties.
Cellulose based products can be used as thickeners and stabilizers for a wide range of food applications.
For this study, cellulosic fibers are produced from tomato remains of the industry aiming to utilize the waste to produce a value-added product.
Dry tomato waste obtained after tomato sauce production was delivered from a local company.
Production of the cellulose was carried out in a 4-step process.
Firstly, hot water extraction was performed to remove sugars, phenolics and water soluble pectins.
Then acidic extraction was performed to remove acid soluble pectins.
After that, a basic extraction was performed to remove hemicelluloses.
Finally, bleaching was performed to remove lignin and pigments.
The fibers were then air-dried and milled using a ball mill.
Techno functional properties of the fibers such as water and oil holding and swelling capacity were investigated.
Particle size after the ball milling was measured by laser scattering method.
FTIR spectra was obtained.
The final product’s cellulose content was measured by a standard gravimetric method.
Tomato waste fiber was shown to possess significant water holding (9 g water g‑1), oil holding (2 g oil g‑1) and swelling (5-6 mL g‑1) properties.
FTIR spectra showed that the produced fiber had a similarity score of 85% to micro fibrillated cellulose from the program’s library.
Gravimetric analysis showed that the product was more than 90% holocellulose (cellulose and hemicellulose) and 80% cellulose.
A 4-step isolation process was used to produce cellulose fibers from the waste of tomato industry.
The results showed that the product has similar properties to orange peel fiber and is superior to many commercial fibers from soybean, pea and wheat straw.
Authors
M. Bal, Y. Yurdagül, M.H. Öztop
Keywords
tomato, waste, cellulose, fiber
Online Articles (49)