sugar cane vinasse
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Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2353
Author(s):  
Oscar Eduardo Rojas Álvarez ◽  
María Inés Nicolás Vázquez ◽  
Jose Oñate-Garzón ◽  
Carlos A. Arango

There is ongoing interest in the alcohol industry to significantly reduce and/or add value to the liquid residue, vinasse, produced after the distillation and rectification of ethanol from sugar cane. Vinasse contains potassium, glycerol, and a protein component that can cause environmental issues if improperly disposed of. Currently, some industries have optimized their processes to reduce waste, and a significant proportion of vinasse is being considered for use as an additive in other industrial processes. In the manufacture of cement and asphalt, vinasse has been used in the mixtures at low concentrations, albeit with some physical and mechanical problems. This work is the first molecular approximation of the components of the sugar cane vinasse in an industrial context, and it provides atomic details of complex molecular events. In the current study, the major components of sugar cane vinasse, alone or complexed on the surface of calcium carbonate, were modeled and simulated using molecular dynamics. The results showed that the protein component, represented by the mannoprotein Mp1p, has a high affinity for forming hydrogen bonds with potassium and glycerol in the vinasse. Additionally, it provides atomic stability to the calcium carbonate surface, preserving the calcite crystalline structure in the same way potassium ions interact with the carbonate group through ion–dipole interactions to improve the cohesion of the modeled surface. On the contrary, when the glycerol molecule interacts with calcium carbonate using more than two hydrogen bonds, it triggers the breakdown of the crystalline structure of calcite expanding the ionic pair.



Author(s):  
Emerson Machado de Carvalho ◽  
Matheus Machado Ramos ◽  
Monica Ansilago ◽  
Rosilda Mara Mussury ◽  
Jannaina Velasques

Microalgae production is expensive and demands high volumes of water and energy to meet all market demands and yet the production of secondary metabolites using alternative media needs deeper studies. Among alternative media, the use of sugar cane vinasse has gained attention for microalgae cultivation. In this work, we’ve compared the biomass yield and secondary metabolites of Chlorella sorokiniana grown in a commercial medium (Sueoka) and in alternative medium prepared with cane vinasse (0.1%) supplemented with N, P2O5 and K2O (commercial formula 20-5-20 g.L-1). The production of microalgae biomass grown in an alternative medium was 2.2% lower, but reached its maximum growth point 14 days faster than the commercial medium. The average level of Phenolic compounds on the commercial medium were 6.02 ± 0.13 mg GAE .g-1 and increased to 15.28 ± 0.32 mg GAE.g-1when C. sorokinianawere grown in the vinasse medium. Same how, Flavonoids contents varied from 13.12 ± 1.33 to 72.30 ± 5.28 mg QE. g-1 to commercial and vinasse medium, respectively. The maximum AOA of C. sorokiniana grown in vinasse medium was 88.05% at a concentration of 1500 µg.mL-1 of extract, with IC50 at 357.7 ± 27.35 µg.mL-1. Different factors seem to induce variances on secondary metabolites synthesis, mostly stress due to QOD and ions added to the medium by vinasse. The authors recognize there are more investigations to be done, but increasing a natural and low cost pathway for flavonoids yield open up an interesting field for the bioprospection of microalgae.



2019 ◽  
Vol 95 (1) ◽  
pp. 205-212 ◽  
Author(s):  
Ernesto L. Barrera ◽  
Henri Spanjers ◽  
Osvaldo Romero ◽  
Elena Rosa ◽  
Jo Dewulf


2018 ◽  
Vol 33 (2) ◽  
pp. 1236-1247 ◽  
Author(s):  
Meheretu Jaleta Dirbeba ◽  
Atte Aho ◽  
Nikolai DeMartini ◽  
Anders Brink ◽  
Ida Mattsson ◽  
...  


2018 ◽  
Vol 119 ◽  
pp. 411-417 ◽  
Author(s):  
Valéria Del Nery ◽  
Inaê Alves ◽  
Márcia Helena Rissato Zamariolli Damianovic ◽  
Eduardo Cleto Pires


2017 ◽  
Vol 93 (5) ◽  
pp. 1320-1327 ◽  
Author(s):  
Iván López ◽  
Liliana Borzacconi ◽  
Mauricio Passeggi


2014 ◽  
Vol 110 ◽  
pp. 239-245 ◽  
Author(s):  
Júlia Fernanda Urbano Marinho ◽  
Jorge Evangelista Correia ◽  
Ana Claudia de Castro Marcato ◽  
Janaína Pedro-Escher ◽  
Carmem Silvia Fontanetti


2012 ◽  
Vol 47 (10) ◽  
pp. 949-958 ◽  
Author(s):  
Carolina Lourencetti ◽  
Mary R. R. De Marchi ◽  
Maria L. Ribeiro


2012 ◽  
Vol 185 (2) ◽  
pp. 1627-1636 ◽  
Author(s):  
Tatiana da Silva Souza ◽  
Fabiana Aparecida Hencklein ◽  
Dejanira de Franceschi de Angelis ◽  
Carmem Silvia Fontanetti


2011 ◽  
Vol 145 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Ricardo Pinheiro de Souza Oliveira ◽  
Luiz Carlos Basso ◽  
Adalberto Pessoa Junior ◽  
Thereza Christina Vessoni Penna ◽  
Marco Del Borghi ◽  
...  


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