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| Vivian, Magnos Alan; da Silva Júnior, Francides Gomes. |
| This study aimed to evaluate the effects of anthraquinone addition in the cooking curve, with different loads of reagents, through the kraft pulping process, of Eucalyptus grandis x Eucalyptus urophylla wood, to infer about the process parameters. The wood was transformed into chips and classified to conduct the kraft cooking curves. The applied loads were from 10% to 24% of active alkali, with an anthraquinone charge of 0.05% (on dry wood). We evaluated raw and screened yield, reject content, kappa number (delignification level) and residual active alkali. We observed that the addition of anthraquinone did not affect the process raw yield, but increased the screened yield by reducing reject content, especially for low loads of active alkali (10% and 12%).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pulping; Cooking additive; Wood pulp Recursos Florestal; Celulose e Papel Fabricação de pasta celulósica; Aditivo de cozimento; Polpa de madeira. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1267 |
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| Favaro,Simone Palma; Tapeti,Crissia Fernanda; Miranda,Cesar Heraclides Behling; Ciaconini,Gabrielly; Miyahira,Maria Amélia M; Roscoe,Renato. |
| ABSTRACT This study aimed to determine if the quality of macauba pulp oil is affected by drying the whole fruits at 60 ºC. Mature fruits were collected at every five days on the ground under 10 palm trees. A mixed batch of 3 kg of whole fruits, with three replications each, was dried in an oven with air circulation for 0, 12, 24, 36 and 48 h at 60 ºC. After every drying time, dried fruits were pulped using an automated device, followed by oil extraction with hexane. Moisture and oil content were determined in the pulp, and the pulp oil quality was analyzed for fatty acid composition, free fatty acids content, peroxide value, molar absorptivity at 232 and 270 nm, refractive index, and total carotene content. The tested temperature was sufficient to decrease... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macauba palm; High oleic; Pulping; Pulp oil; Vegetable oil oxidation; Vegetable oil acidity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100601 |
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