Abstract
The cellulose extracts from plants are need of energy and have potential in damaging the environment so that an alternative cellulose source with more efficient results is by using bacteria to produce the cellulose fibers. This study aims to determine the effect of hydrogen peroxide (H2O2) treatment on the structure and transparency of biopolymer bacterial cellulose film (BCF). The method used is the making of BCF by utilizing pineapple peel extract and then cooking at 80°C for 120 min. with H2O2 concentration of 0%, 2.5%, 5%, and 7,5%. Drying is done in the electric oven and then observed the structure and morphology using X-ray diffraction and transparency test, respectively. The result of structure observation shows that the intensity of the highest diffraction peak lies at a diffraction angle of 22° achieved at 5% peroxide treatment with crystallinity and crystal index of 85.1% and 82.4%, respectively. Transparency testing shows that the higher the concentration of peroxide used, the better the transparency.
Highlights
A day, the materials from nature, especially fiber, have been applied in the biocomposites form for various technological devices that are decomposed
The nata is a product of fermentation of sugar by Acetobacter xylinum which is converted into cellulose
The culture medium of Bacterial cellulose (BC) consists of 2,000 ml pineapple peel extract, 10% sugar, 0.5% ammonium sulfate, and 5% acetic acid (v/v) adjusted to get a pH of 4.5. 10% (v/v) bacteria starter was added to the culture medium, incubated for 10 days at 30°C under static conditions
Summary
The materials from nature, especially fiber, have been applied in the biocomposites form for various technological devices that are decomposed. Cellulose from plants is considered impure because it contains many types of complex carbohydrates, wherein cellulose derived from plants has its components comprising hemicellulose (20-35%), cellulose (35-50%), and lignin (1025%) [3]. One of the products that can be derived from pineapple waste is the nata. The nata is a product of fermentation of sugar (glucose) by Acetobacter xylinum which is converted into cellulose.
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