Description of the antioxidant capacity of Calafate berries (Berberis microphylla) collected in southern Chile

Gutiérrez, Raúl Sánchez; Pincheira, Carla Guzmán

doi:10.1590/fst.25820

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…Raman spectrum obtained at noncarbonized leaves shows a large fluorescent background (Figure S2A), characteristic of organic matrixes. 26 This is highly contrasting to spectra obtained at carbonized regions (Figure 3A), which shows a more ordered surface with less fluorescence, with marked D and G bands at 1330 and 1550 cm −1 , respectively. Background correct spectra recorded at several (n = 60) carbonized locations over the leaf were used to calculate the mean ratio of the D and G bands intensity, found to be 0.85 ± 0.13.…”

Section: Structural Characterizationcontrasting

confidence: 63%

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Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Blasques,

Camargo,

Veloso

et al. 2024

ACS Sustainable Chem. Eng.

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The use of materials from nature to prepare sensors is a challenge, once we can generate great value with respect to the environment. In this regard, the carbonization of several types of substrates through the utilization of a CO 2 laser promotes the fabrication of exceptional electrochemical sensors that exhibit different architectures, all while adhering to the principles of ecofriendliness and cost-efficiency. In this context, the pursuit of novel substrates derived from renewable sources, characterized by their accessibility and wide availability, is important in the advancement of cutting-edge electrochemical sensors. In this scenario, the study into the utilization of fallen tree leaves is presented for the first time, capitalizing on the pyrolytic transformation induced by a CO 2 laser, to fabricate electrochemical sensors. During the sensor fabrication process, the parameters of the CO 2 laser, including laser power, pyrolysis scan rate, and scan gap, are systematically adjusted to attain optimal outcomes. The proposed sensors were characterized through electrochemical, morphological, and physicochemical methodologies, thereby enabling an exhaustive exploration of the novel carbonized surface generated on the leaves. Also, to underscore the applicability of the sensors, they have been employed in the detection of dopamine and paracetamol in biological and pharmaceutical samples. The applications of this system show a linear range of 10−1200 μmol L −1 for dopamine and 5.0−100.0 μmol L −1 for paracetamol, with limits of detection of 1.1 and 0.76 μmol L −1 , respectively. In this manner, electrochemical sensors derived from fallen tree leaves exhibit satisfactory analytical performance and remarkable reproducibility, thus highlighting their substantial potential to replace conventional substrates.

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Section: Structural Characterizationcontrasting

confidence: 63%

“…Raman spectrum obtained at noncarbonized leaves shows a large fluorescent background (Figure S2A), characteristic of organic matrixes . This is highly contrasting to spectra obtained at carbonized regions (Figure A), which shows a more ordered surface with less fluorescence, with marked D and G bands at 1330 and 1550 cm –1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Blasques,

Camargo,

Veloso

et al. 2024

ACS Sustainable Chem. Eng.

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“…It was demonstrated that all evaluated extracts significantly prevented LPS-induced NO secretion by macrophages; however, the calafate extract induced a more drastic effect than other berries [ 16 ]. Additionally, in vitro studies highlighted that it could modify the inflammatory response produced by the interaction between adipocytes and macrophages, which correlates with the high content of total polyphenols in the fruit and the concentration of anthocyanins [ 104 , 105 ]. Moreover, the relative change of iNOS and TNF-α and IL-10 mRNA expression was studied to evaluate whether these extracts would modulate the gene expression of cytokines associated with specific inflammatory pathways.…”

Section: Native Plants and Their Metabolitesmentioning

confidence: 99%

Anti-Inflammatory Chilean Endemic Plants

et al. 2023

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Medicinal plants have been used since prehistoric times and continue to treat several diseases as a fundamental part of the healing process. Inflammation is a condition characterized by redness, pain, and swelling. This process is a hard response by living tissue to any injury. Furthermore, inflammation is produced by various diseases such as rheumatic and immune-mediated conditions, cancer, cardiovascular diseases, obesity, and diabetes. Hence, anti-inflammatory-based treatments could emerge as a novel and exciting approach to treating these diseases. Medicinal plants and their secondary metabolites are known for their anti-inflammatory properties, and this review introduces various native Chilean plants whose anti-inflammatory effects have been evaluated in experimental studies. Fragaria chiloensis, Ugni molinae, Buddleja globosa, Aristotelia chilensis, Berberis microphylla, and Quillaja saponaria are some native species analyzed in this review. Since inflammation treatment is not a one-dimensional solution, this review seeks a multidimensional therapeutic approach to inflammation with plant extracts based on scientific and ancestral knowledge.

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“…The small blue fruits contain carbohydrates, organic acids, and phenolic compounds, with an important antioxidant activity [6]. These properties make it a nutritional and medicinal fruit that has been used by the ancestral people, and today, it is preserved and marketed freeze-dried [7,8]. At present, this Patagonian native berry is still an underutilized fruit species and its development into a new crop is relevant for the diversification of agricultural production in Argentina [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Climatic Variations in the Floral Phenology of Berberis microphylla and Its Pollinator Insects

Radice,

Giordani,

Arena

2023

Horticulturae

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Berberis microphylla (calafate) is an evergreen shrub that grows spontaneously in the Argentinean and Chilean Patagonia with a very harsh climate. This Sub-Antarctic zone is affected by the “El Niño” and “La Niña” pattern, which is measured using the Oceanic Niño Index (ONI). The objective of this study was to analyze the floral phenology and its pollinator insects, in relation to the climatic conditions observed. This work was developed in Ushuaia (Argentina) during 2010, 2014, 2015, and 2016. Significant differences were observed for the development of flower bud and floral phenology between the four years studied. On 26 October, between 84 and 100% of flower buds was recorded in the shrubs tested during the years 2010, 2014, and 2015 and then decreased abruptly in 2010 and more slowly in 2014 and 2015. However, in 2016 on the same date, it was recorded 70% of button flowers increasing to 90% on 5 November and then slowly evolving towards the anthesis phase. On the other hand, the anthesis phase was developed rapidly for 2010 and 2015 and slower for 2014 and 2016. A peak in anthesis occurred on 2 November in 2010, while in the other years, it was observed later in 16 November. The hoverflies of the genus Carposcalis and Allograpta, both insects verified to be responsible for the pollination of calafate, were registered between 2014 and 2016. Carposcalis was significantly more present in 2014, while in 2015 and 2016, Allograpta was predominant. The insect activity was also related with the climatic conditions, i.e., air temperature, air relative humidity, wind speed, and gust of wind along the day during the anthesis phase, and which also modified its life cycle. So, it was observed in 2016, the year with winter temperatures higher than normal, that adult hoverflies ended their hibernation period earlier and began to lay eggs on the juvenile calafate sprouts; hence, the emerging larvae ate the pollen grain of button flowers, causing a decrease in future fruits harvested. The results presented show that the “La Niña” and “El Niño” effects in these latitudes are the opposite of those expected. Spring 2016 developed under a strong “La Niña” effect, as occurred in 2010 with temperatures warmer than in 2014 and 2015, where both years developed under the “El Niño” effect. This study showed how climatic conditions can modify the floral phenology of B. microphylla and its pollinator insect frequency, their activity, and their life cycle.

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Description of the antioxidant capacity of Calafate berries (Berberis microphylla) collected in southern Chile

Cited by 4 publications

References 28 publications

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Anti-Inflammatory Chilean Endemic Plants

Effect of Climatic Variations in the Floral Phenology of Berberis microphylla and Its Pollinator Insects

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Description of the antioxidant capacity of Calafate berries (Berberis microphylla) collected in southern Chile

Cited by 4 publications

References 28 publications

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO2 Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO2 Laser

Anti-Inflammatory Chilean Endemic Plants

Effect of Climatic Variations in the Floral Phenology of Berberis microphylla and Its Pollinator Insects

Contact Info

Product

Resources

About

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser

Green Fabrication and Analytical Application of Disposable Carbon Electrodes Made from Fallen Tree Leaves Using a CO₂ Laser