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1. Production of Paper Using Bacterial Cellulose and Residue from the Sugar and Alcohol Industry.

Author

Costa, Andréa F. S., Galdino Jr., Claudio J. S., Meira, Hugo M., Júlia, D. P. Amorimc, Siva, Ivo D. L., Gomes, Erika A. S., and Sarubbo, Leonie A.

Subjects
CELLULOSE, ALCOHOL industry, SUGAR industry, BAGASSE, BIOMATERIALS
Abstract

The production of a fibrous surface formed from a composite of sugarcane bagasse and bacterial cellulose was the objective of this research. For this process the bagasse was grinded and cleaned, followed by the addition of a chemical substance capable of separating the cellulose fiber from the natural binders. The vegetable (VC) fiber originated from sugarcane bagasse (SCR) was mixed with bacterial cellulose (BC) fiber, which was produced in an alternative culture medium that used maize maceration liquor as a carbon and nitrogen source. The celluloses were ground, mixed and sieved to dryness. The resulting dry composite of the mixture was characterized by FTIR, DRX and TGA. The biomaterial obtained from the combination of BC and VC showed the same quality as a dense and rigid paper, with the advantage of not requiring the addition of chemicals and avoiding the consumption of a large volume of water. Infrared confirms the same chemical groups for BC and VC. Crystallinity and degradation did not show a large change for crystallinity index and degradation temperature when SCR was incorporated into BC. The pulp production process does not harm the environment at any time, since there is no emission of pollutants. An environmentally friendly product was obtained from sugarcane bagasse, a byproduct of ethanol and sugar manufacturing in BC mills and nanofibrils, producing high quality fibers, high purity and biodegradability, which makes the paper 100% recyclable. [ABSTRACT FROM AUTHOR]

Published
2020
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2. fdt Africa's Exhibitor of the week

Subjects
Packaging, Food packaging, Packaging industry, Vendor relations, Paper, Sugar industry, Insects, Candy, Paper industry, Business, international
Abstract

BillerudKorsnÈñs is fdt Africa's exhibitor of the week. Sealed Paper Packaging by BOSCH Packaging and BillerudKorsnÈñs -- pack flour, sugar, pasta, oats, beans, confectionary or any other dry powdered goods [...]

Published
2019

3. Phthalates in paper and board packaging and their migration into Tenax and sugar

Author

Birgit Aurela, H Kulmala, and L Söderhjelm

Subjects
Paper, Sucrose, Chemistry, Polymers, Health, Toxicology and Mutagenesis, Sugar industry, Public Health, Environmental and Occupational Health, Tenax, Phthalate, Food Packaging, Mineralogy, General Chemistry, Toxicology, Dibutyl Phthalate, Food packaging, chemistry.chemical_compound, Chemistry (miscellaneous), Adhesives, Humans, Food science, Sugar, Food Science
Abstract

Packaging samples for many kinds of foodstuffs were received from manufacturers together with basic information about the materials used in their production. Half of the 29 samples studied contained phthalates in amounts exceeding 5 mg/kg. Two types of paper bag intended for sugar and exceptionally high phthalate contents although they were flexo printed. The maximum contents of di-isobutylphthalate (DIBP) and dibutylphthalate (DBP) were 450 and 200 mg/kg, respectively. The phthalates found originated from adhesives used in the joints of the packaging. In other packagings manufactured at the same time, DIBP concentrations varied from 92 to 193 mg/kg. Phthalates were also determined in sugar before and after packaging. Migration of phthalates ranged from 57 to 74% of the original content in the packaging after 4 months storage. Packed sugar contained DIBP 2.2-2.6 mg/kg and DBP 0.5-1 mg/kg. The sugar packagings were also tested using Tenax as a food stimulant. The results indicated that 69-91% of the original content of the phthalates migrated into Tenex after 10 days at 40 degrees C. The major drawback with migration testing using Tenax is its high cost; it is not practical to fill the whole 1 kg packaging with Tenax, and smaller samples of packaging must be used instead. However, the distribution of substances in the packaging might be non-uniform. In the sugar packagings studied here, the difference between phthalate concentrations in two samples taken from the same packaging was nearly 100-fold.

Published
2000