Dynamic of reserve compounds of mesocarp and seeds of macaw palm (Acrocomia aculeata) submitted to different storage conditions

Barreto, Leilane C.; Magalhães, Ana Laura L.; Takahashi, Jacqueline A.; Garcia, Queila Souza

doi:10.1007/s00468-016-1423-4

Cited by 13 publications

(7 citation statements)

References 39 publications

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“…Engenharia Agrícola,Jaboticabal,v.38,n.4 The increase of the oil content in Macaw fruit is associated to the synthesis of the polysaccharide reserves occurring during maturation (Montoya et al, 2016;Barreto et al, 2016). Harvesting the fruits at the appropriate time, before releasing them from bunches in a natural way, is essential for extracting larger amounts of oil (Queiroz et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…The fruit is considered the most relevant part of the plant economically and presents as one of the main characteristics the high concentration of oil. The oil is used in pharmaceutical industry for the manufacture of cosmetics, in the food sector, as cooking oil and by the energy sector for the production of biofuels (Barreto et al, 2016;Cazarolli et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Classification of Macaw Palm Fruits From Colorimetric Properties for Determining the Harvest Moment

et al. 2018

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Macaw palm (Acrocomia aculeata) is a promising crop for biofuel production due to the high concentration of its fruit oil, but the harvest date is an issue to be better understood so it could be cultivated on an industrial scale. The aim of this study was to use the colorimetric properties of the macaw palm fruits to develop a neural network classifier to determine the ideal moment for harvesting, based on the oil content of the fruit mesocarp. During nine weeks of maturation were sampled 900 fruits of macaw palm fruits and the colorimetric properties of the RGB, HSI and CIELab color models were used to classify the fruits into immature and mature fruits. Kappa index and the overall accuracy values were used to access the classifier performance. The classifiers based on RGB parameters and on hue were considered equivalents having a Kappa index of 0.901 and 0.942, respectively, indicating the 59 th week of maturation as the ideal time to harvest with the highest oil content.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Classification of Macaw Palm Fruits From Colorimetric Properties for Determining the Harvest Moment

et al. 2018

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“…ex Mart] is a palm tree found in abundance in tropical countries such as Brazil (SOUZA et al, 2016). This palm tree has many uses and aroused socioeconomic interest due to its potential of vegetable oil production and conversion into biofuels, foods, and cosmetics (COIMBRA; JORGE, 2011;BARRETO et al, 2016;EVARISTO et al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

Kinetics and Mathematical Modeling of the Drying Process of Macaúba Almonds

et al. 2022

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The study of drying kinetics is fundamental for making the correct choice of time and temperature to be used in the drying process. In addition, mathematical modeling enables the simulation, optimization, sizing, and determination of the commercial application of the drying system. Therefore, the objective of this study was to investigate the kinetics and mathematical modeling of the drying process of macaúba almond [Acrocomia aculeata (Jacq.) Lodd. ex Mart] performed at different temperatures. For this purpose, the drying was performed under three different temperatures: 40 °C, 50 °C, and 60 °C. Four repetitions were performed for each temperature. The experimental data were fitted by nine different mathematical models. The choice of the best model was based on the following statistical parameters: magnitude of the adjusted coefficient of determination, magnitude of the mean relative error, and standard error of the estimate. It was observed that an increase in the drying temperature resulted in a reduction of drying time. The shortest drying time was observed in the treatment performed under 60 °C in which the almonds attained equilibrium moisture content at 34.08 h. The longest drying time was observed in the treatment performed under 40 °C, with the almonds attaining equilibrium moisture content at 404.40 h. Approximation of Diffusion, Midilli, Page, and Modified Page were the models that best described the drying process of macaúba almonds with the aim of subsidizing the design of industrial dryers.

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“…The estimate of oil productivity in the mesocarp is of 5000 kg.ha -1 palm-kernel type, needed for biodiesel production, and of 1400 kg.ha -1 of oil in the kernel is lauryl type, used in cosmetics (Clement et al, 2005;Barreto et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Determination of macaw fruit harvest period by biospeckle laser technique

Costa¹,

Pinto²,

JÃonior³

et al. 2017

Afr. J. Agric. Res.

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Macaw palm has been stood out as a raw material for the production of bioenergy, because it has high productivity of oil and less emission of polluting waste during combustion, meeting the worldwide demand for sustainable energy sources. The aims of this research were the evaluation of response of the biologic activity measured by the optical technique of the biospeckle laser applied to macaw palm fruits at different maturity weeks and develop a classifier in function of biologic activity to determine the harvest period related with oil content in the fruits. To perform the experiment, 10 weeks fruits different maturity stages were evaluated. The biospeckle laser images were obtained by illuminating the epicarp of each fruit. The biological activity was quantified by absolute value of difference algorithm applied to biospeckle images. A neural network was developed to classify the fruits which were closer to harvest in function of biologic activity. Biologic activity showed a significant linear ratio (R 2 = 0.913) with the maturation of fruits. Classification results have shown that fruits from 59 th week after flowering are ideal for harvest and present the highest oil levels.

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Dynamic of reserve compounds of mesocarp and seeds of macaw palm (Acrocomia aculeata) submitted to different storage conditions

Cited by 13 publications

References 39 publications

Classification of Macaw Palm Fruits From Colorimetric Properties for Determining the Harvest Moment

Classification of Macaw Palm Fruits From Colorimetric Properties for Determining the Harvest Moment

Kinetics and Mathematical Modeling of the Drying Process of Macaúba Almonds

Determination of macaw fruit harvest period by biospeckle laser technique

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