Supercritical adsorption of buriti oil (Mauritia flexuosa Mart.) in γ-alumina: A methodology for the enriching of anti-oxidants

2012 ◽  
Vol 66 ◽  
pp. 181-191 ◽  
Author(s):  
M.A.E. Cunha ◽  
R.F. Neves ◽  
J.N.S. Souza ◽  
L.F. França ◽  
M.E. Araújo ◽  
...  
Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 94 ◽  
Author(s):  
Samantha Pantoja ◽  
Vanessa Mescouto ◽  
Carlos Costa ◽  
José Zamian ◽  
Geraldo Rocha Filho ◽  
...  

The buriti palm (Mauritia flexuosa) is a palm tree widely distributed throughout tropical South America. The oil extracted from the fruits of this palm tree is rich in natural antioxidants. The by-products obtained from the buriti palm have social and economic importance as well, hence the interest in adding value to the residue left from refining this oil to obtain biofuel. The process of methyl esters production from the buriti oil soapstock was optimized considering acidulation and esterification. The effect of the molar ratio of sulfuric acid (H2SO4) to soapstock in the range from 0.6 to 1.0 and the reaction time (30–90 min) were analyzed. The best conditions for acidulation were molar ratio 0.8 and reaction time of 60 min. Next, the esterification of the fatty acids obtained was performed using methanol and H2SO4 as catalyst. The effects of the molar ratio (9:1–27:1), percentage of catalyst (2–6%) and reaction time (1–14 h) were investigated. The best reaction conditions were: 18:1 molar ratio, 4% catalyst and 14 h reaction time, which resulted in a yield of 92% and a conversion of 99.9%. All the key biodiesel physicochemical characterizations were within the parameters established by the Brazilian standard. The biodiesel obtained presented high ester content (96.6%) and oxidative stability (16.1 h).


2016 ◽  
Vol 7 (10) ◽  
pp. 4442-4450 ◽  
Author(s):  
Jailane de Souza Aquino ◽  
Maria Helena de Araújo Vasconcelos ◽  
Débora Catarine Nepomuceno de Pontes Pessoa ◽  
Juliana Késsia Barbosa Soares ◽  
João Paulo de Sousa Prado ◽  
...  

The oil extracted fromMauritia flexuosa(buriti) is rich in vitamin A, tocopherols and unsaturated fatty acids.


2008 ◽  
Vol 46 (8) ◽  
pp. 2776-2781 ◽  
Author(s):  
Cinthia Fernanda Zanatta ◽  
Vanessa Ugartondo ◽  
Montserrat Mitjans ◽  
Pedro A. Rocha-Filho ◽  
María Pilar Vinardell

2011 ◽  
Vol 92 (10) ◽  
pp. 2099-2104 ◽  
Author(s):  
Geraldo E. Luz ◽  
Anne G.D. Santos ◽  
Ana C.R. Melo ◽  
Ricardo M. Oliveira ◽  
Antonio S. Araujo ◽  
...  

2010 ◽  
Vol 48 (1) ◽  
pp. 70-75 ◽  
Author(s):  
C.F. Zanatta ◽  
M. Mitjans ◽  
V. Urgatondo ◽  
P.A. Rocha-Filho ◽  
M.P. Vinardell

2018 ◽  
Vol 68 (4) ◽  
pp. 220 ◽  
Author(s):  
M. L.F. Freitas ◽  
R. C. Chisté ◽  
T. C. Polachini ◽  
L. A.C.Z. Sardella ◽  
C. P.M. Aranha ◽  
...  

This work reports a complete characterization of buriti oil. Physicochemical properties were determined according to AOCS methodologies and thermophysical properties were measured using a controlled stress rheometer and a digital electronic density meter. β-carotene and tocopherol contents were obtained using HPLC systems. Fatty acids and acylglycerol classes were determined using GC and HPSEC systems, respectively, while triacylglycerol composition was estimated using the software PrOleos. Thermal behavior (crystallization and melting) was analyzed using a DSC. The results attested high levels of total carotenoids with β-carotene as the major one; total tocopherols contained α- and β-tocopherols which accounted for 91% of the total; and monounsaturated fatty acids were mainly represented by oleic acid. The results showed close agreement between density and viscosity of buriti and olive oils. The crystallization and melting peaks occurred at -43.06 °C and -2.73 °C, respectively. These properties enable Buriti oil to be recommended as an excellent alternative for enriching foods with bioactive compounds.


Author(s):  
Jailane de Souza Aquino ◽  
Débora C. N. de Pontes Pessoa ◽  
Kassandra de Lourdes G. V. Araújo ◽  
Poliana S. Epaminondas ◽  
Alexandre Ricardo P. Schuler ◽  
...  

2022 ◽  
Vol 18 ◽  
Author(s):  
Danusa Silva da Costa ◽  
Katiuchia Pereira Takeuchi ◽  
Richard Marins da Silva ◽  
Mariana Buranelo Egea ◽  
Geovana Rocha Plácido

Background: Buriti (Mauritia flexuosa) oil has high economic potential because it contains monounsaturated and polyunsaturated fatty acids with high antioxidant potential and high carotenoid content, making it an excellent source of pro-vitamin A. Objective: The objective of this work was to evaluate the rheological properties of filmogenic solutions incorporated with different buriti oil concentrations. Methods: Buriti oil (0.15 to 0.45 % w/v) and emulsifier (Tween®20) (0.02 to 0.04 % w/v) were combined using a factorial experimental design 22 with 3 central points for the preparation of filmogenic solutions with cassava starch (3%, w/v) and glycerol (0.06%, w/v). Rheological properties, static and centrifugation emulsion stabilities, and pH value of filmogenic solutions were evaluated. Results: Filmogenic solutions with lower emulsifier concentration showed increased flow resistance and non-Newtonian and pseudoplastic behavior (n<1). Central point formulation (E, F, and G) remained stable (no particle agglomeration) throughout the test period as well as pH value close to neutrality. In centrifugation stability index at 3500 rpm, only formulation C did not show phase separation. Conclusion: It was possible to develop a mixture of a filmogenic solution containing buriti oil that could be applied as an eco-friendly coating in food.


2010 ◽  
Vol 32 (3) ◽  
pp. 657-663 ◽  
Author(s):  
Bernardo Dias Ribeiro ◽  
Rafaella Ferreira Nascimento ◽  
Daniel Weingart Barreto ◽  
Maria Alice Zarur Coelho ◽  
Suely Pereira Freitas

Mauritia vinifera (buriti) is a palm tree that grows wild in different areas of Brazil, particularly in the Amazonian region. The buriti oil is rich in carotenoids, especially in β-carotene. The growing interest in other natural sources of β-carotene has stimulated the industrial use of buriti as a raw material for pulp oil extraction. Most processes are based on the conventional technologies, involving drying and pressing the pulp for oil recovery and further separation of carotenoids in a liquid phase using organics solvents. In the present work, the ethanol-based process was evaluated for simultaneous carotenoids recovering and fractionating from buriti pulp. The raw material and ethanol, 1:4 ratio, were placed in an erlenmeyer flask and maintained at 30rpm for 1 hour in a temperature-controlled bath at 65ºC. The mixture was filtered under vacuum and cooling at 10ºC to allow for the separation of the solvent in two phases. Carotenoids composition, determined by HPLC, has indicated a β-carotene concentration about 12 times greater in the lower phase than in the upper phase. The profile of the carotenoids in the denser phase is quite similar to that of raw buriti oil, and the concentration of total carotenoids is 40% higher than that of the original raw oil, making the ethanol-based process particularly attractive for industrial applications.


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