Bioactive properties of Acacia dealbata flowers extracts

Casas, María P.; Conde, Enma; Ribeiro, Daniela; Fernandes, Eduarda; Domı́nguez, Herminia; Torres, María Dolores

doi:10.1007/s12649-019-00639-4

Cited by 16 publications

(12 citation statements)

References 29 publications

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“…Their flowers play a key role in the colonizing capacity, limiting the growth of other species due to the allopathic interference caused by vegetal material decomposition in the soil, which maintains the toxicity of soil percolates for a long time [6]. Extracts from the flowers are already explored as hydrogels for personal care products, cosmetics or pharmaceuticals, as well as perfumes based on their antiradical and anti-proliferative potential [7].…”

Section: Introductionmentioning

confidence: 99%

Special Bioactivities of Phenolics from Acacia dealbata L. with Potential for Dementia, Diabetes and Antimicrobial Treatments

et al. 2022

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Some diseases still need better therapeutic approaches, including the prevention of development. Natural resources are investigated with this purpose; among them, we decided to use an invasive plant as a main strategy. This will help in two ways: screening new compounds in flowers prevents the plant from causing widespread damage by controlling the dissemination and also obtains crude material for further applications. In the present study, flower extracts from Acacia dealbata Link harvested in Portugal were studied during three stages of flowering. Phenolic compounds were evaluated using HPLC/DAD and the total phenolics as the total flavonoids content was determined. The bioactivities screened were antioxidant potential, inhibitory activities of some enzymes (acetylcholinesterase, lipase and α-glucosidase) and, to complete the screening, the inhibition of microbial growth was determined against Gram-negative and Gram-positive bacteria, as well as for yeasts. The data obtained suggested that the hydroethanolic extracts gave good results for all these biological activities and varied according to the maturation status of the flowers, with the early stage being the most active, which can be related to the chalcones content. This new approach will lead to the possible control of the invasive plant and also future perspective research for therapeutic purposes.

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Section: Introductionmentioning

confidence: 99%

Special Bioactivities of Phenolics from Acacia dealbata L. with Potential for Dementia, Diabetes and Antimicrobial Treatments

et al. 2022

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“…Casas et al [90] found a good free radical scavenging activity of crude ethanol extract against ABTS free radicals (850 mg of Trolox equivalents per gram of extract), which is probably attributed to the presence of phenolic compounds (270 mg of gallic acid equivalents per gram of extract). The authors found butanol, ethyl acetate, hexane and the crude ethanol extracts to be protective against neutrophils oxidative bursts, accessed in venous blood collected from healthy human volunteers, at concentrations in the range 63 to 500 µg/mL, and showed moderate cytotoxic activity against colon carcinoma HCT-116 and lung adenocarcinoma A549 cells [90]. Moreover, encouraging results were obtained with the application of extracts as solvents in the preparation of hydrogels.…”

Section: Other Applications Of Flower Extractsmentioning

confidence: 99%

“…Moreover, encouraging results were obtained with the application of extracts as solvents in the preparation of hydrogels. Hydrogels with attractive mechanic properties were produced, thus opening a new possibility for the valorization of A. dealbata flowers through their inclusion in the preparation of these materials for personal care products, cosmetics or pharmaceuticals, taking advantage of their antiradical and anti-proliferative potential [90].…”

Section: Other Applications Of Flower Extractsmentioning

confidence: 99%

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

Correia

Quintela²,

Duarte

et al. 2020

Forests

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Acacia spp. are widespread all over the Portuguese territory, representing a threat to local biodiversity and to the productivity of the forest sector. The measures adopted in some countries for their eradication or to control their propagation are expensive, have been considered unfeasible from practical and economical perspectives, and have generated large amounts of residue that must be valorized in a sustainable way. This review brings together information on the valorization of bark, wood, leaves, flowers, pods, seeds, roots, and exudates from Acacia spp., through the production of high-value bioactive extracts (e.g., antioxidant, antimicrobial, anti-inflammatory, antidiabetic, antiviral, anthelmintic, or pesticidal agents, suitable to be explored by pharmaceutical, nutraceutical, cosmetics, and food and feed industries), its incorporation in innovative materials (e.g., polymers and composites, nanomaterials, low-cost adsorbents), as well as through the application of advanced thermochemical processes (e.g., flash pyrolysis) and pre-treatments to decompose biomass in its structural components, regarding the production of biofuels along with valuable chemicals derived from cellulose, hemicellulose, and lignin. The knowledge of this research is important to encourage an efficient and sustainable valorization of Acacia spp. within a biorefinery concept, which can bring a significant economic return from the valorization of these residues, simultaneously contributing to forest cleaning and management, to reduce the risk of fires, and to improve the social-economic development of rural areas.

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“…The bark is used for the production of tannins (substances of plant origin) due to the high amount present in the species (greater than 74%) [295] and other compounds such as absorbents [296], those with an antimicrobial and antioxidant capacity [266,297] and the anti-quorum sensing [298]. In the perfume industry, flowers are processed to produce fragrances, as well as perfume fixatives [263], in the production of compounds with anti-inflammatory properties [299,300] as well as other types of products such as bioherbicides [301]. In the ecosystem, the pollen in the flowers presents a relevant function for the continuity of sleep [263].…”

Section: Acacia (Acacia Dealbata L)mentioning

confidence: 99%

Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review

et al. 2022

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Energy crops are dedicated cultures directed for biofuels, electricity, and heat production. Due to their tolerance to contaminated lands, they can alleviate and remediate land pollution by the disposal of toxic elements and polymetallic agents. Moreover, these crops are suitable to be exploited in marginal soils (e.g., saline), and, therefore, the risk of land-use conflicts due to competition for food, feed, and fuel is reduced, contributing positively to economic growth, and bringing additional revenue to landowners. Therefore, further study and investment in R&D is required to link energy crops to the implementation of biorefineries. The main objective of this study is to present a review of the potential of selected energy crops for bioenergy and biofuels production, when cultivated in marginal/degraded/contaminated (MDC) soils (not competing with agriculture), contributing to avoiding Indirect Land Use Change (ILUC) burdens. The selected energy crops are Cynara cardunculus, Arundo donax, Cannabis sativa, Helianthus tuberosus, Linum usitatissimum, Miscanthus × giganteus, Sorghum bicolor, Panicum virgatum, Acacia dealbata, Pinus pinaster, Paulownia tomentosa, Populus alba, Populus nigra, Salix viminalis, and microalgae cultures. This article is useful for researchers or entrepreneurs who want to know what kind of crops can produce which biofuels in MDC soils.

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Bioactive properties of Acacia dealbata flowers extracts

Cited by 16 publications

References 29 publications

Special Bioactivities of Phenolics from Acacia dealbata L. with Potential for Dementia, Diabetes and Antimicrobial Treatments

Special Bioactivities of Phenolics from Acacia dealbata L. with Potential for Dementia, Diabetes and Antimicrobial Treatments

Insights for the Valorization of Biomass from Portuguese Invasive Acacia spp. in a Biorefinery Perspective

Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review

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