Thermal degradation kinetics of carotenoids: Acrocomia aculeata oil in the context of nutraceutical food and bioprocess technology

Valério, Pedro Prates; Frias, Jesus Maria; Cren, Érika Cristina

doi:10.1007/s10973-020-09303-9

Cited by 11 publications

(10 citation statements)

References 49 publications

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“…Although the refractive index of the 52w/w% BC/PS film formed by spin coating after redissolving the hot-pressed sample was decreased to 1.67 (maximum value at the wavelength of 510 nm) (Fig. S1d) due to the decomposition of most of the BC (because of heating at 230 • C during extrusion, a known phenomenon) [46]. But these experiments show that the composites are processable at such high loadings of BC.…”

Section: Supporting Informationmentioning

confidence: 89%

Enhancing the Refractive Index of Polymers with a Plant-Based Pigment

Yasir,

Sai,

Sicher

et al. 2021

Preprint

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Polymeric materials are prized for their formability, low density, and functional versatility. However, the refractive indices of common polymers fall in a relatively narrow range between 1.4 and 1.6. Here, we demonstrate that loading commercially-available polymers with large concentrations of a plant-based pigment can effectively enhance their refractive index. For polystyrene loaded with 67w/w% β-carotene, we achieve a peak value of 2.2 near the absorption edge at 531 nm, while maintaining values above 1.75 across longer wavelengths of the visible spectrum. Despite high pigment loadings, this blend maintains the thermoforming ability of polystyrene, and β-carotene remains molecularly dispersed. Similar results are demonstrated for the plant-derived polymer ethyl cellulose. Since the refractive index enhancement is intimately connected to the introduction of strong absorption, it is best suited to applications where light travels short distances through the material, such as reflectors and nanophotonic systems. We experimentally demonstrate enhanced reflectance from films, as large as seven-fold for ethyl cellulose at selected wavelengths. Theoretical calculations that highlight that this simple strategy can significantly increase light scattering by nanoparticles and enhance the performance of Bragg reflectors.

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Section: Supporting Informationmentioning

confidence: 89%

Enhancing the Refractive Index of Polymers with a Plant-Based Pigment

Yasir,

Sai,

Sicher

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Other inconsistencies were also observed in the case of vitamin E and pigment (chlorophylls a and b , and carotenoids) content. Again, the processing method together with storage conditions might affect the final composition, since these compounds are prone to degradation when exposed to light and heat [ 23 , 24 , 25 ]. The vitamin E and pigment content might also be influenced by environmental factors such as drought, excessive sunlight, and genetic variability, where mutants lacked enzymes necessary for biosynthesis [ 26 , 27 ].…”

Section: Discussionmentioning

confidence: 99%

The Chemical Composition of Oils and Cakes of Ochna serrulata (Ochnaceae) and Other Underutilized Traditional Oil Trees from Western Zambia

et al. 2021

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Currently, the negative effects of unified and intensive agriculture are of growing concern. To mitigate them, the possibilities of using local but nowadays underused crop for food production should be more thoroughly investigated and promoted. The soybean is the major crop cultivated for vegetable oil production in Zambia, while the oil production from local oil-bearing plants is neglected. The chemical composition of oils and cakes of a three traditional oil plant used by descendants of the Lozi people for cooking were investigated. Parinari curatellifolia and Schinziophyton rautanenii oils were chiefly composed of α-eleostearic (28.58–55.96%), linoleic (9.78–40.18%), and oleic acid (15.26–24.07%), whereas Ochna serrulata contained mainly palmitic (35.62–37.31%), oleic (37.31–46.80%), and linoleic acid (10.61–18.66%); the oil yield was high (39–71%). S. rautanenii and O. serrulata oils were rich in γ-tocopherol (3236.18 μg/g, 361.11 μg/g, respectively). The O. serrulata oil also had a very distinctive aroma predominantly composed of p-cymene (52.26%), m-xylene (9.63%), γ-terpinene (9.07%), o-xylene (7.97), and limonene (7.23%). The cakes remaining after oil extraction are a good source of essential minerals, being rich in N, P, S, K, Ca, and Mg. These plants have the potential to be introduced for use in the food, technical, or pharmaceutical industries.

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“…According to Taiz et al (2017), carotenoids are responsible for the color of ripe fruits, besides participating in the photosynthesis process and acting as photoprotective in plants. Although there is some research on carotenoids in species of Acrocomia (VALERIO et al, 2020;ARENA et al 2018;SCHEX et al 2018;OLIVEIRA et al 2013;ROCHA et al 2013; COIMBRA E JORGE 2011), none evaluated if fruits with different colors of peel and pulp showed distinct composition and quantities of carotenoids.…”

Section: Morphological Characterizationmentioning

confidence: 99%

Morphological characterization and productivity estimates of Acrocomia totai Mart. (Arecaceae) – a sustainable alternative of extractivism and cultivation

et al. 2021

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The Acrocomia totai palm can be found in areas of Cerrado and Pantanal in Brazil, Argentina, Bolivia and Paraguay. Its fruits are used by traditional and rural communities for subsistence or income source. Given the relevance of this genetic resource, we assessed the morphological and agronomic characters and estimated the population density in two physiognomies of the Pantanal. We found variation in all analyzed characters, such as the density of spines on the stipe, coloration of leaves, epicarp and mesocarp. The average number of fruits per bunch was 392.30±134.53, fresh mass (g) of the whole fruit of 15.50±3.87 and, the mesocarp oil content (%) of 14.94±8.06. The population density varied between 48 pls.ha-1 in area of shrubby grassland to 287 pls.ha-1 in open grassland. We estimated yields per hectare of 8.65 t of fruits, 4.77 t of pulp and 270 kg of oil in areas of shrubby grassland and 1.45 t of fruits, 0.8 t of pulp and 50 kg of oil in areas of open grassland. The data demonstrate the potential of profitable exploitation of the species in extractive or cultivation. The variation found can be useful for the genus taxonomy, breeding and conservation programs.

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Thermal degradation kinetics of carotenoids: Acrocomia aculeata oil in the context of nutraceutical food and bioprocess technology

Cited by 11 publications

References 49 publications

Enhancing the Refractive Index of Polymers with a Plant-Based Pigment

Enhancing the Refractive Index of Polymers with a Plant-Based Pigment

The Chemical Composition of Oils and Cakes of Ochna serrulata (Ochnaceae) and Other Underutilized Traditional Oil Trees from Western Zambia

Morphological characterization and productivity estimates of Acrocomia totai Mart. (Arecaceae) – a sustainable alternative of extractivism and cultivation

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