Physicochemical properties of Syagrus coronata and Acrocomia aculeata oils for biofuel production

Iha, Osvaldo K.; Alves, Flávio C.S.C.; Suarez, Paulo A. Z.; Oliveira, Maria Beatriz Farias de; Meneghetti, Simoni Margareti Plentz; Santos, Bruno P.T.; Soletti, João Inácio

doi:10.1016/j.indcrop.2014.09.003

Cited by 37 publications

(25 citation statements)

References 31 publications

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“…Among these is the fruit of macauba (Acrocomia aculeata), which stands out for its high yield potential because it can produce 4500 to 6000 liters of oil per hectare year (Bergmann et al, 2013;César et al, 2015), greater than the oil yield per hectare year of annual crops such as soybeans (560 liters), sunflower (774 liters) and castor (810 liters) (Bergmann et al, 2013). Ilha et al (2014) showed that the biodiesel obtained from Acrocomia aculeata has acceptable properties for use in diesel engines; however, due to the predominant composition of unsaturated fatty acids, it requires the use of an antioxidant additive. Macauba oil is obtained from the pulp and almond, wherein the pulp comprises ~45% of the fruit (Ramos et al, 2008) and has between 18.7 to 29 wt% of oil (Coimbra and Jorge, 2012;Ciconini et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The processing of this crude oil for biodiesel production requires the use of methods tolerant to free fatty acids (César et al, 2015). Ilha et al (2014) obtained macauba biodiesel using a two-step reaction: esterification of FFA with sulfuric acid and transesterification with potassium hydroxide. The use of the homogeneous catalysts requires the use of subsequent washing steps for removal of the catalyst from the product and thus leads to the generation of a high volume of effluents (Vyas et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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-This study evaluated the potential of macauba pulp oil (MPO) as a feedstock for continuous ester production using ethanol under pressurized conditions. Experiments were performed in order to obtain data for the effect of process variables on ethyl ester (FAEE) and free fatty acid (FFA) conversion in a catalyst-free process. From the results, it appears that the MPO to ethanol mass ratio and the pressure were the variables with more favorable effect on the evaluated response variables. The addition of n-hexane caused an increase in the production of esters; however, this had a negative effect on FFA conversion. The addition of water was unfavorable for oil processing with high acidity. In this process, esterification and transesterification occur simultaneously, and the high FFA content in MPO provides high yields (85 wt% of esters; 93% FFA conversion) at low temperature, since the esterification reaction rate is higher than the transesterification. The decomposition of fatty acids was evaluated and levels <5% were observed under the evaluated experimental conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Colonelli

Trentini

Santos

et al. 2017

Braz. J. Chem. Eng.

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“…These authors commented that this composition is very similar to coconut oil. The presence of saturated chains made a biodiesel derived from S. coronata less viscous and more stable to oxidation and these physico-chemical properties showed that it has good potential for use in engines (Iha et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Syagrus coronata seed oils have antimicrobial action against multidrug-resistant Staphylococcus aureus

Bessa¹,

Nascimento²,

Alves³

et al. 2016

J. Med. Plants Res.

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Syagrus coronata (Mart.) Becc. (Arecaceae) is a native Brazilian palm (ouricuri) and despite the use of its derived products by traditional communities, few scientific reports have been published regarding its biomedical activity. This study investigates the chemical composition and anti-Staphylococcus aureus effects of both manufactured oil (SCO) and essential oil (SCEO) from S. coronata seeds. SCO was provided by rural inhabitants, while SCEO was obtained by hydrodistillation. Chemical characterization was performed by gas chromatography-mass spectrometry (GC/MS). In vitro antimicrobial activity was determined against 17 S. aureus strains, including multidrug-resistant strains. Eleven compounds were detected in the SCEO, octanoic (28.61%) and dodecanoic acids (22.97%) were the major constituents. On the other hand, nineteen fatty acids (FA) were identified in the SCO, the major ones were dodecanoic acid (41.58%) and 9-octadecenoic acid (23.81%). Both oils showed strong activity against all tested strains. Most strains (68.75%) were sensitive to SCEO at minimum inhibitory concentrations (MIC) between 0.002 and 0.01 μL/mL; and minimum bactericidal concentrations (MBC) ranging from 0.002 to 0.312 μL/mL. SCO inhibited the growth of 52.94% of strains with MIC between 0.16 and 0.625 μL/mL. MBC values for SCO were between 0.16 and 5 μL/mL; however, 47.05% of isolates were killed by 2.5 μL/mL of SCO. These results encourage further research into the toxicological and pharmacological aspects of SCO and SCEO. Such work would likely support their use in the development of new antimicrobial agents for the pharmaceutical, food and cosmetic industries.

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“…The advantages of macauba over annual oleaginous crops for biodiesel production include its high oil ha -1 productivity -similar to Elaeis guineensis -that reaches up to 6.7 t ha -1 yr -1 (Evaristo et al, 2016a), its ability to adapt to a wide range of edaphoclimatic conditions (Lopes, Steidle Neto, Mendes, & Pereira, 2013) and the fact that it is not a staple food despite being edible (César, Almeida, Souza, Silva, & Atabani, 2015). Macauba fruits are yellowish-green drupes 2.5 to 5 cm in diameter (Iha et al, 2014) that consist of a fibrous husk (epicarp), oil-rich pulp (mesocarp) and a nut made up of a stony endocarp and an oil-rich kernel/seed. The pulp oil contains approximately 78% unsaturated fatty acids, especially oleic acid, while the kernel oil is composed of approximately 71% saturated fatty acids that primarily comprise lauric, myristic, oleic and palmitic acid (César et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Air drying of macauba fruits: maintaining oil quality for biodiesel production

et al. 2019

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Macauba fruits are oil-rich drupes with high moisture content at harvest. This feature can affect the chemical properties of the oil and increase the costs of biodiesel production. Therefore, it is necessary to adopt postharvest strategies to ensure oil quality. The aim of this work was to evaluate the effect of drying macauba fruit on the quality of the pulp oil. Husked and dehusked fruits were dried at 60°C and then stored. At 0, 15, 45, 100, and 180 days after storage, fruit samples were retrieved, and the oil from the pulp was evaluated for physicochemical parameters. The removal of the husk from the fruits considerably reduced the drying time compared to that of the husked fruits. Drying prevented deterioration of the fruit even after 180 days of storage, regardless of the presence of the husk. The drying process allowed for efficient storage of the macauba fruit while maintaining low levels of oil acidity. Furthermore, the oxidative stability of the pulp oil from the dehusked dried fruits lasted longer than that from the husked dried fruits. Therefore, drying is a viable alternative for the postharvest of macauba fruits to maintain the quality of the oil for biodiesel production.

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Physicochemical properties of Syagrus coronata and Acrocomia aculeata oils for biofuel production

Cited by 37 publications

References 31 publications

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Assessment of process variables on the use of macauba pulp oil as feedstock for the continuous production of ethyl esters under pressurized conditions

Syagrus coronata seed oils have antimicrobial action against multidrug-resistant Staphylococcus aureus

Air drying of macauba fruits: maintaining oil quality for biodiesel production

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