Articles published on Aloe arborescens
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- Research Article
- 10.15407/hftp17.01.119
- Mar 30, 2026
- Himia, Fizika ta Tehnologia Poverhni
- L.S Rieznichenko + 6 more
Extracts of medicinal plants contain a set of specific compounds that can ensure the formation of metal nanoparticles and at the same time provide them with useful properties for effective use in various fields of biotechnology, in particular in agricultural production. The main goal of this work was to synthesize and study the electrokinetic potential and structural properties of green synthesis products - silver, gold, zinc oxide, and iron oxide nanoparticles, depending on the composition of the plant material used and the synthesis conditions. 18 samples of metal nanoparticles were synthesized using aqueous and alcoholic extracts of medicinal plants: eucalyptus (Eucalyptus viminalis Labill), aloe (Aloe arborescens Mill and Aloe vera L.), peppermint (Mentha?piperita L.), plantain (Plantago major L.), chamomile (Matricaria chamomilla L.), nettle (dioecious Urtica dioica L.), willow-herb (Chamerion angustifolium L.), calendula (Calendula officinalis), hibiscus (Hibiscus sabdariffa L.), and an aqueous tannin solution. All samples were characterized by the content of polyphenolic compounds. The nanoparticles were studied by microelectrophoresis, UV-visible spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), and X-ray diffraction (XRD). According to the obtained values of the electrokinetic potential, the sample synthesized using an aqueous extract of willow-herb tea proved to be the most stable among the obtained ZnO nanoparticles. Among the FexOy NPs, the most stable were nanoparticles synthesized using aqueous extracts of hibiscus and plantain. The most stable Au nanoparticles were the samples synthesized using tannin and an alcoholic extract of Aloe vera L. As for silver nanoparticles, tannin, an alcoholic extract of eucalyptus, and an aqueous extract of Aloe arborescens contributed to the formation of the most stable nanoparticles. These samples of Ag, Au, FexOy, and ZnO nanoparticles are the most promising for their further practical application, in particular in agroecology and crop production to combat phytopathogens and ensure soil health.
- Research Article
- 10.3390/foods15040770
- Feb 20, 2026
- Foods (Basel, Switzerland)
- Antonella Caterina Boccia + 3 more
The milk metabolite profiles of dairy cows during the dry-off and peripartum periods were investigated using 1H NMR combined with chemometric analysis to evaluate the effects of different dry-off management strategies. Milk samples were collected 14 days before dry-off (T0) and 28 days after calving (T1) from cows receiving an internal teat sealant combined with intramammary antibiotics (CTR), an internal teat sealant alone (SIG), or an internal teat sealant associated with dietary supplementation of lyophilized Aloe arborescens (ASIG). Analysis of both aqueous and organic milk extracts revealed no significant metabolite differences among treatment groups. In contrast, a clear discrimination was detected between samples collected at T0 and T1. Aqueous extracts at T0 were characterized by higher levels of choline, butyrate, branched-chain amino acids, and N-acetylated compounds, whereas T1 samples exhibited higher levels of saccharides, citrate, phosphorylcholine, and galactose-1-phosphate. Organic extracts at T0 showed higher concentrations of conjugated linoleic acids (CLAs) and caproleic acid. These findings indicated that the physiological stage of the cows had a more pronounced impact on milk metabolite composition than the dry-off treatments, with no detrimental effects on milk composition or overall metabolite balance.
- Research Article
- 10.17221/7/2025-cjgpb
- Apr 4, 2025
- Czech Journal of Genetics and Plant Breeding
- José Imery-Buiza + 1 more
Aloe vera and A. arborescens are succulent plants widely used in cosmetics, pharmaceuticals, and food supplements. The objective of this study was to perform interspecific crosses and agronomically characterise three genotypes cultivated in a Venezuelan highland region (altitude 1 727 m, 13-17.9 °C). Successful hybridisation was achieved only when A. arborescens pollen (P1) was used on A. vera pistils (P2), whereas the reciprocal cross was largely unsuccessful. Hybrid seed germination reached 11.86%, and adult hybrids exhibited significant vegetative superiority over P1, particularly in leaf volume, leaf weight, and flower number. The progeny outperformed both parents in leaf base width and lateral tooth size, thereby enhancing its ornamental value. The expected 2n = 2x = 14 karyotype was confirmed in the root meristems of hybrids. The analysis of leaf pulp processing indicated that the hybrid was promising for juice production (39.8% yield, 1 203 ppm acemannan), thus highlighting its potential for agro-industrial applications in tropical highlands or comparable temperate regions. Other agronomic traits, including number, thickness, colour, and shape of leaves; sprouting of stem branches and basal suckers, flowering period, inflorescence, eggs/ovary, and details of the colour and dimensions of bracts, perianth, pedicel, and ovary, were also evaluated.
- Research Article
- 10.53511/pharmkaz.2025.39.88.036
- Jan 23, 2025
- Farmaciâ Kazahstana
- E.M Imanova + 6 more
Aloe is a plant that resembles a cactus and flourishes in hot, dry areas. It is grown in subtropical climates all throughout the world, including the border regions of New Mexico, Texas, California, and Arizona in the south. In medical practice, medicinal raw materials from plants are currently used as biogenic stimulants. Aloe vera contains more than 200 biologically active natural ingredients, including polysaccharides, vitamins, enzymes, amino acids, anthraquinones, saponins, organic acids, phytoncides, esters, phenols, resins, minerals and other elements that promote the absorption of nutrients, improve the functioning of the digestive system, strengthen the immune system, and also cleanse the body of toxins. It contains 20 amino acids, including essential ones for humans. Aloe gel is a storehouse of antioxidant vitamins A, C, E and B vitamins. Eight extremely important enzymes for humans were also found in this plant. The mineral complex in aloe is represented by calcium, copper, selenium, chromium, manganese, magnesium, potassium, sodium and zinc. This article presents a comparative analysis of the morpho-anatomical features of aloe vera from aloe arborescens, and also conducts a study of the anatomical structure of the Aloe vera L. plant in 4 variants grown in soil, collected from various mixtures.
- Research Article
- 10.1051/e3sconf/202563201016
- Jan 1, 2025
- E3S Web of Conferences
- Mourad Derouiche + 8 more
Research into antioxidants in plants has expanded greatly in recent years, to find the best posible antioxidants to prevent and even treat disease. This study represents the first comparative investigation of the antioxidant activity of these three Aloe species (Aloe vera, arborescens and brevifolia). The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay was used to assess the antioxidant activity of methanolic extracts of the three Aloe species. A calibration range of a standard antioxidant represents the positive control, Butylhydroxyanisol (BHA) (0-100 µg/ml). The results showed a significant difference in the free radical scavenging activity of the three Aloe species and the standard (BHA) for DPPH, with respective IC50 values from lowest to highest of 0.040 mg/ml for standard BHA, 0.100 mg/ml for Aloe vera, 0.270 mg/ml for Aloe arborescens and 0.370 mg/ml for Aloe brevifolia. The percentage of inhibition in Aloe vera is higher than in the other two species (Aloe arborescens and brevifolia). Aloe vera, which is very rich in active substances, showed high antioxidant potential comparable to that of the standard. Leaf extracts from Aloe arborescens and Aloe brevifolia also had a lower antioxidant potential than Aloe vera, but this was not negligible.
- Research Article
20
- 10.1039/d4ra08900f
- Jan 1, 2025
- RSC advances
- Cynthia A Gwada + 7 more
The increasing prevalence of antimicrobial resistance (AMR) bacteria poses a major global health threat, compounded by the limited development of new antibiotics. To address this challenge, alternative strategies, including nanoparticle-based therapies, are being explored. This study investigates the antimicrobial properties of green-synthesized silver nanoparticles (AgNPs) derived from leaf extracts of Ocimum gratissimum (OG), Apium graveolens (AG), and Aloe arborescens (AA). These plant extracts act as reducing, capping, and stabilizing agents during the synthesis process. By controlling the reaction parameters, the synthesized AgNPs displayed surface plasmon resonance (SPR) peaks at 434, 427, and 435 nm for OG, AG, and AA, respectively, indicating successful nanoparticle formation. The particles were predominantly spherical, with average sizes of 28.5 ± 6.3 nm (AgNPs-OG), 15.07 ± 3.8 nm (AgNPs-AA), and 20.2 ± 2.5 nm (AgNPs-AG), although some particles exhibited triangular and cylindrical shapes. X-ray diffraction (XRD) confirmed the formation of crystalline, face-centered cubic (FCC) metallic silver, while Fourier Transformation Infrared (FTIR) identified functional groups such as alcohols, amines, amides, carboxyl, and esters capping the surface of AgNPs. Energy dispersive spectroscopy (EDS) further confirmed the purity of the AgNPs. The antimicrobial activity of the synthesized AgNPs was tested against Gram-negative E. coli and Gram-positive S. aureus bacteria. Notably, AgNPs demonstrated high antimicrobial efficacy, particularly with smaller-sized, spherical particles showing superior performance. The minimum inhibitory concentration was as low as 1.016 μg mL-1, highlighting the strong antimicrobial potential of AgNPs, whereas the minimum bactericidal concentration was recorded for E. coli, indicating greater susceptibility of Gram-negative bacteria to AgNPs and a concentration-dependent bactericidal effect. A comparison analysis showed that the antimicrobial effectiveness of the aqueous extract was significantly enhanced when AgNPs were incorporated, whereas higher antimicrobial performance was observed for green-synthesized AgNPs compared with wet chemically synthesized AgNPs reported in the literature. This is attributed to enhanced biocompatibility and a synergistic effect between the nanoparticles and plant-derived bioactive compounds. The mechanism of action of AgNPs involves silver ion (Ag+) release and reactive oxygen species (ROS) generation via surface oxidation and photoactivation. These findings underscore the potential of green-synthesized AgNPs as an alternative strategy in mitigating AMR.
- Research Article
2
- 10.1002/ptr.8412
- Dec 28, 2024
- Phytotherapy research : PTR
- Zaki H Hakami + 10 more
(1) Background and aim: Aloe arborescens Mill. ( A. arborescens ) is one of the most widely distributed species in the genus Aloe and has garnered widespread recognition for its anticancer properties. However, the molecular mechanisms underlying these activities have not yet been fully elucidated. This study aimed to explore the effects of the plant polar glycosidic fraction (AAG) on hepatocellular carcinoma (HCC) in an invivo model induced by diethylnitrosamine (DEN). (2) Experimental procedure: The fraction was standardized using HPLC-PDA-MS/MS fingerprinting, and two distinct intragastric AAG dose regimens were examined (10 and 20 mg/kg) in combination with DEN 200 mg/kg. Serum alpha-fetoprotein (AFP), gamma-glutamyl transferase (γ-GGT), glutathione S-transferase placental (GST-P), mRNA expression of metabolic cytochrome enzymes (CYP1A3 and CYP2B2), inflammatory genes (nuclear factor kappa-B p65 subunit; NF-κB p65), metalloproteases 9 (MMP9), tissue inhibitors of metalloproteases (TIMP1), transforming growth factor beta 1 (TGFβ1), and histological features were assessed. (3) Key results and conclusions and implications: AAG was characterized by five major secondary metabolites: saponins, chromones, anthraquinone, and triterpenes. The fraction reduced hepatic malignancy characteristics by diminishing the size and number of altered foci and lowering hepatic cancer biomarkers, such as γ-GGT, AFP, and GST-positive foci. It also reduced the mRNA levels of CYP1A3 and CYP2B2, NF-κB p65, and MMP9, hepatic Ki-67, and TGFβ1 while upregulating TIMP1 levels. This study revealed that AAG exhibited a marked suppressive effect on HCC cell proliferation, displaying a range of mechanistic actions, including decreasing the metabolic activation of cytochrome enzymes, which consequently reduced the production of reactive oxygen species and other genes implicated in cancer development. AAG could be a significant therapeutic candidate for patients diagnosed with hepatocarcinoma.
- Research Article
- 10.24917/25438832.9.10
- Nov 28, 2024
- Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
- Anna Kucab
Natural herbal products can effectively support the functioning of the immune system, constituting an important element of the treatment and prevention of bacterial or viral infections. The study's main goal is to indicate, based on scientific research, the possibilities of using selected plant raw materials as immunostimulants. The work also aims to update the state of knowledge on the analyzed properties of four selected plant species (Aloe arborescens, Aronia melanocarpa, Rosa canina, Sambucus nigra). The immunostimulatory properties of Aloe arborescens and Sambucus nigra have been confirmed by pharmacological and clinical studies. Therefore, it is not without reason that these plants are ingredients of popular and generally available commercial preparations. Similar activity of Aronia melanocarpa and Rosa canina has been found only based on in vitro or in vivo studies on experimental animals and clinical studies are needed to demonstrate the clear justification for using them as agents that increase the body’s immunity.
- Research Article
11
- 10.3390/cells13221845
- Nov 7, 2024
- Cells
- Eleonora Calzoni + 8 more
The growing interest in plant-origin active molecules with medicinal properties has led to a revaluation of plants in the pharmaceutical field. Plant-derived extracellular vesicles (PDEVs) have emerged as promising candidates for next-generation drug delivery systems due to their ability to concentrate and deliver a plethora of bioactive molecules. These bilayer membranous vesicles, whose diameter ranges from 30 to 1000 nm, are released by different cell types and play a crucial role in cross-kingdom communication between plants and humans. Notably, PDEVs have demonstrated efficacy in treating various diseases, including cancer, alcoholic liver disease, and inflammatory bowel disease. However, further research on plant vesicles is necessary to fully understand their traits and purposes. This study investigates the phototoxic effects of extracellular vesicles (EVs) from Aloe arborescens, Aloe barbadensis, and Aloe chinensis on the human melanoma cell line SK-MEL-5, focusing on their anthraquinone content, recognized as natural photosensitizers. The phototoxic impact of Aloe EVs is associated with ROS production, leading to significant oxidative stress in melanoma cells, as validated by a metabolome analysis. These findings suggest that EVs from Aloe arborescens, Aloe barbadensis, and Aloe chinensis hold promise as potential photosensitizers, thus highlighting their potential for future application in photodynamic cancer therapy and providing valuable insights into the possible utilization of PDEVs for therapeutic purposes.
- Research Article
3
- 10.1186/s42523-024-00336-1
- Aug 31, 2024
- Animal Microbiome
- Paola Cremonesi + 9 more
BackgroundIn the context of the RABOLA project, which aimed to identify operational practices that lead to the reduction of antibiotic use in dairy cattle farming, lyophilised Aloe arborescens was administered orally to cows during the dry-off and peripartum periods. In this specific paper we wanted to examine whether oral administration of Aloe arborescens, in combination with the topical application of a teat sealant could exert an effect on the microbial populations of three cow microbiomes (rumen, milk, rectum), between dry-off and peripartum. Dry-off and peripartum are critical physiological phases of the cow’s life, where both the mammary gland and the gastrointestinal tract undergo dramatic modifications, hence the relevance of evaluating the effects of dietary treatments.MethodsThirty multiparous dairy cows were randomly allocated to three groups: Control (antibiotic treatment and internal teat sealant), Sealant (only internal teat sealant) and Aloe (internal teat sealant and Aloe arborescens homogenate administered orally). For 16S rRNA gene sequencing, rumen, rectum and milk samples were collected, not synchronously, at the most critical timepoints around dry-off and calving, considering the physiological activity of each biological site.ResultsThe rumen microbiome was predominantly characterized by Bacteroidetes and Firmicutes followed by Proteobacteria, while the rectum exhibited a prevalence of Firmicutes and Bacteroidetes. The milk microbiome mainly comprised Firmicutes, Proteobacteria, Actinobacteria and Bacteroidetes. Alistipes spp., Ruminococcaceae UCG-10 group, Prevotellaceae UCG-001 group, and Bacteroides spp., involved in cellulose and hemicellulose degradation, enhancement of energy metabolism, and peptide breakdown, showed increment in the rectum microbiome with Aloe supplementation. The rectum microbiome in the Aloe group exhibited a significant increase in the Firmicutes to Bacteroidetes ratio and alpha-diversity at seven days after dry-off period. Beta-diversity showed a significant separation between treatments for the rectum and milk microbiomes. Aloe supplementation seemed to enrich milk microbial composition, whereas the Sealant group showed greater diversity compared to the Control group, albeit this included an increase in microorganisms frequently associated with mastitis.ConclusionsAloe arborescens administration during the dry-off period did not demonstrate any observable impact on the microbial composition of the rumen, a finding further supported by volatilome analysis. Instead, the oral Aloe supplementation at dry-off appears to significantly influence the composition of the dairy cow rectum and milk microbiomes in the following lactation.
- Research Article
7
- 10.1038/s41598-024-63811-4
- Jun 7, 2024
- Scientific Reports
- Donghe Li + 3 more
The ability of indoor plants to purify benzene pollution is the basic basis for the selection of plants for ecological remediation of indoor benzene pollution. In this study, the purification rate and the purification amount per unit leaf area of 13 test plants at three benzene concentrations were determined by indoor fumigation experiments, and the benzene absorption and purification abilityability of indoor plants were comprehensively evaluated. The results showed that (1) there was a significant correlation between benzene concentration and purification rate and purification amount per unit leaf area. (2) At the three concentrations, Spathiphyllum floribundum showed the highest purification rate and Sansevieria trifasciata var. laurentii showed the highest purification per unit leaf area. (3) The combined results showed that Sansevieria trifasciata var. laurentii, Spathiphyllum floribundum and Aloe arborescens were the strongest absorbers and purifiers, while Podocarpus nagi and Anthurium andraeanum ‘Pink champin’ had the weakest absorption and purification capacity. The results of this study provide a theoretical basis and reference for the selection of plants with strong capacities to adsorb and purify benzene pollution in indoor air.
- Research Article
6
- 10.3390/horticulturae10050482
- May 8, 2024
- Horticulturae
- Giuseppe Sortino + 6 more
Fig is a widespread crop in southern Italy, highly valued for its sweet flavor. However, its consumption as a fresh product is limited to three to four days after harvest because of its high susceptibility to quality loss and microbial contamination. The combined use of low temperature and a modified atmosphere is the traditional preservation method. However, several studies have shown that the use of Aloe arborescens or vera and O. ficus-indica (OFI) mucilage as an edible coating could reduce the microbial load and water loss, respectively. Therefore, our study aimed to evaluate the synergistic effects of Aloe gel (AG) and O. ficus-indica mucilage (OM) on the quality and safety of two fig cultivars, ‘San Giovanni’ and ‘Melanzana’, during cold storage at 4 °C. The main results showed the effectiveness of edible coatings on both fig cultivars. An AG coating significantly reduced the microbial load, while the OM treatment showed the ability to preserve firmness and reduce weight loss. In addition, the combined OM + AG treatment showed the same effects as the individual coating formulations, also improving visual appearance. Thus, the use of the synergetic coating formulation could be a natural way to reduce the microbial load, extending fresh fig fruit’s shelf life.
- Research Article
2
- 10.3390/plants12234016
- Nov 29, 2023
- Plants
- Felipe M Galleguillos Madrid + 11 more
Excess energy derived from photosynthesis can be used in plant microbial fuel cell (PMFC) systems as a sustainable alternative for the generation of electricity. In this study, the in situ performance of CAM (Crassulacean acid metabolism) plants in Calama, in the Atacama Desert, was evaluated for energy recovery using PMFCs with stainless steel AISI 316L and Cu as electrodes. The plant species evaluated included Aloe perfoliata, Cereus jamacaru, Austrocylindropuntia subulata, Agave potatorum, Aloe arborescens, Malephora crocea, and Kalanchoe daigremontiana. Among the plant species, Kalanchoe daigremontiana demonstrated significant potential as an in situ PMFC, showing a maximum cell potential of 0.248 V and a minimum of 0.139 V. In addition, the cumulative energy for recovery was about 9.4 mWh m−2 of the electrode. The use of CAM plants in PMFCs presents a novel approach for green energy generation, as these plants possess an inherent ability to adapt to arid environments and water-scarce areas such as the Atacama Desert climate.
- Research Article
5
- 10.1016/j.sajb.2023.11.019
- Nov 22, 2023
- South African Journal of Botany
- Silvia Lazzara + 5 more
Biochar enhances root development and aloin content of mature leaves in containerized Aloe arborescens Mill.
- Research Article
10
- 10.1016/j.stress.2023.100187
- Jul 16, 2023
- Plant Stress
- M Derouiche + 9 more
The effect of salt stress on the growth and development of three Aloe species in eastern Morocco
- Research Article
- 10.18502/jabs.v13i2.12726
- May 22, 2023
- Journal of Advanced Biomedical Sciences
- Fatemeh Ghane + 9 more
Background & Objective: Burn is one of the prominent causes of death around the world, however drug discovery attempts for burn healing has not been entirely successful. Aloe arborescens (A. arborescens), is effective in the burning wounds healing and growth inhibition of bacterial pathogens. Our objective was to assess the wound healing and antibacterial effects of A. arborescens in vivo.
 Materials & Methods: Thirty healthy Wistar rat animals were enrolled. The treatment process continued for 21 days and sampling was conducted on days 14 and 21 and the tissue slides were sent to the pathology laboratory for testing. The bactericidal activity of A. arborescens extract was evaluated using the disc diffusion method.
 Results: A. arborescens demonstrated a significant effect on the healing of burn wounds. Furthermore, the antibacterial effects of the A. arborescens extract against Gram-negative (Escherichia coli, Pseudomonas aeruginosa) was significantly higher than that against Grampositive (Staphylococcus aureus, Bacillus cereus) bacterial species.
 Conclusion: In conclusion, this study indicated that A. arborescens extract had an improving effect on the healing process of third degree burns without toxicity to the tissue.
- Research Article
2
- 10.20915/2077-1177-2023-19-2-47-60
- Apr 10, 2023
- Measurement Standards. Reference Materials
- T K Ryazanova + 1 more
The need to improve pharmacopoeial approaches to the standardization of medicinal plant raw materials (MPRMs) and herbal medicinal products (HMPs), and the need to ensure the implementation of the principle of «cross-cutting» standardization in the series «medicinal plant raw material – phyto-substance – herbal medicinal product» determine the relevance of developing new, more rational approaches to the analysis of objects of plant origin.The purpose of the research was the theoretical and experimental substantiation of the use of reference materials in the development of assay procedures on the example of certain types of plant raw materials and products based on it from the standpoint of the chemical composition, stability and physicochemical properties of the biologically active compounds contained in them.Assay of active substances was carried out by high performance liquid chromatography (HPLC) using a Milichrome-6 chromatograph with a spectrophotometric detector in the ultraviolet (UV-) region. The UV spectra were recorded using a Specord 40 spectrophotometer. The measurement results were processed using the WinASPECT and Microsoft Excel 2016 programs.As a result of research, procedures for assay of syringin in the bark of Syringa vulgaris, and in the rhizomes and roots of Eleutherococcus senticosus, rosavin and salidroside in the rhizomes and roots of Rhodiola rosea, arbutin in the leaves of Arctostaphylos uva-ursi and Vaccinium vitis-idaea, isosalipurposide in the flowers of Helichrysum arenarium, the amount of anthracene derivatives in fresh leaves of Aloe arborescens were developed and validated. Spectrophotometric methods for determining the amount of biologically active phenylpropanoids in terms of eleutheroside B (syringin) in MPRMs and HMPs of Eleutherococcus senticosus and the amount of aralosides in the roots of Aralia Manchurian were introduced. Based on the data obtained, the scientific rationale for the use of reference materials of syringin (Syringa vulgaris bark, Eleutherococcus senticosus rhizomes and roots), rosavin and salidroside (Rhodiola rosea rhizomes and roots), the sum of ammonium salts of aralosides (Manchurian aralia root), arbutin (Arctostaphylos uva-ursi and Vaccinium vitis-idaea leaves), mixtures of aloins A and B (Aloe arborescens fresh leaves) in the analysis procedures was provided. The concept of a systematic approach to the analysis of medicinal plant raw materials and products based on it was formulated.
- Research Article
7
- 10.1038/s41598-023-31922-z
- Mar 31, 2023
- Scientific Reports
- L Cattaneo + 5 more
Positive effects have been observed as a result of Aloe arborescens supplementation in the dry-off phase in dairy cows. Metabolomic approaches can provide additional information about animal physiology. Thus, we characterized plasma metabolome around dry-off in 12 cows supplemented (AL) or not (CTR) with 10 g/d of lyophilized A. arborescens with an untargeted metabolomic approach. Overall, 1658 mass features were annotated. Regardless of treatment, multivariate statistics discriminated samples taken before and after dry-off. Overall, 490 metabolites were different between late lactation and early dry period, of which 237 were shared between AL and CTR. The most discriminant compounds (pentosidine and luteolin 7-O-glucoside) were related to the more fibrous diet. Pathway analysis indicated that pyrimidine and glycerophospholipid metabolisms were down-accumulated, suggesting reduced rumen microbial activity and liver load. Samples from AL were discriminated from CTR either the day of dry-off or 7 days after. At dry-off, aloin and emodin were the most discriminant metabolites, indicating that Aloe's bioactive compounds were absorbed. Seven days later, 534 compounds were different between groups, and emodin was among the most impacted. Pathway analysis highlighted that glycerophospholipid, pyrimidine, and folate metabolisms were affected. These results might indicate that Aloe has positive effects on liver function and a modulatory effect on rumen fermentation.
- Research Article
22
- 10.3390/plants12040869
- Feb 15, 2023
- Plants
- Tsolanku Sidney Maliehe + 5 more
Aloe arborescens Mill’s extracts have been explored for antibacterial and antioxidant efficacies. However, there is limited information on its chemical composition and mechanism of action. The purpose of this study was to assess the chemical composition, antibacterial and antioxidant activities and mechanism of the whole leaf extract of A. arborescens Mill. The phytochemical profile was analysed with gas chromatography mass spectrometry (GC-MS). The antioxidant and antibacterial activities were screened using 1,1diphenyl2picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and micro-dilution assays, respectively. The effects of the extract on the bacterial respiratory chain dehydrogenase, membrane integrity and permeability were analysed using iodonitrotetrazolium chloride, 260 absorbing materials and relative electrical conductivity assays. GC-MS spectrum revealed 26 compounds with N,N’-trimethyleneurea (10.56%), xanthine (8.57%) and 4-hexyl-1-(7-ethoxycarbonylheptyl)bicyclo[4.4.0]deca-2,5,7-triene (7.10%), being the major components. The extract also exhibited antioxidant activity with median concentration (IC50) values of 0.65 mg/mL on DPPH and 0.052 mg/mL on ABTS. The extract exhibited minimum inhibitory concentration (MIC) values ranging from 0.07 to 1.13 mg/mL. The extract inhibited the bacterial growth by destructing the activity of the respiratory chain dehydrogenase, membrane integrity and permeability. Therefore, the leaf extract has the potential to serve as a source of antibacterial and antioxidant compounds.
- Research Article
7
- 10.3390/horticulturae9020204
- Feb 3, 2023
- Horticulturae
- Alessandra Culmone + 8 more
Postharvest fruit loss is caused by the absence of advanced handling and storage technologies and the quiescent presence of fungal pathogens. Therefore, there is a growing demand for sustainable decisions for the planet. This study focused on the use of two types of edible coatings: one was based on the essential oil of Origanum vulgare L. subsp. viridulum with Aloe arborescens Mill. gel (EC1), and the other was based on the hydrolate only (EC2). These treatments were applied to provide defense against fungal infections in papaya (Carica papaya L. cv Solo), and the storage time was 25 days (T5 ± 1 °C). Fruits coated with EC1 were more contaminated with fungal pathogens than both control (CTR) and EC2 fruit. EC2 showed a statistically lower decay index than CTR and EC1 and maintained its organoleptic characteristics better, showing a 15% loss of firmness after 25 days of storage. Furthermore, the lowest decay index (1.14 after 25 days) was found for the EC1 and CTR. These findings suggest that the use of hydrolate can be useful for extending the shelf life and maintaining the quality of papaya fruit, representing an alternative to the use of synthetic fungicides for food safety.