Aloe Vera Plant Research Articles

Wet chemical preparation of herbal nanocomposites from medicinal plant leaves for enhanced coating on textile fabrics with multifunctional properties

The present study is aimed at the synthesis of different herbal nanoparticles from Acalypha indica, Azadirachta indica, Piper betle, Tridax procumbens and Aloe vera plant leaves through wet processing method i.e., solution based synthesis for the development of a biocompatible nanomaterials with excellent medicinal properties. The efficiency of herbal nanoparticles are determined by subjecting a comparative assessment among the various herbal nanoparticles in virtue of their physico-chemical as well as their functional properties when coated on cotton fabrics. The prepared five different herbal nanoparticles show amorphous nature having an average particle size distribution ranges from 21 to 27 nm. Tridax procumbens nanoparticles exhibit higher antioxidant activity (98.17%) while tested against DPPH assessment. Nevertheless, the herbal nanocomposites prepared from Aloe vera with chitosan polymer shows higher protection (UPF = 62.3) than the fabric coated with other herbal nanoparticles. The superhydrophobic properties (154.5°) and higher antibacterial properties against Escherichia coli (33.13 mm) and Staphylococcus aureus (35.62 mm) for the Azadirachta indica nanocomposite coated cotton fabrics shows comparably more effectiveness than that of the other counterpart. The present study helps to identify the appropriate processing methods as well as herbal nanoparticles for enhanced the self-cleaning, UV-protection, antibacterial and antioxidant activity in biomedical textiles.

Enzymatic Reaction by Combination of Bromelain and Aloe Vera Extracts as Anti-Browning Agent

Ananas co mosus plants produced enzyme called bromelain which acts as an anti-browning agent with the enzymatic inhibition to inhibit fruits browning thus prolong the life span of fruits. The properties are also discovered in aloe vera plant extract which act as an edible coating that can provide nutrients whilst improving anti-browning agent reaction. In the present study, we aimed to elucidate the inhibitory properties of bromelain and aloe vera extract to the enzymatic browning reaction of fresh pear slices. Our result showed that the combination of bromelain and aloe vera extract are able to reduce browning reaction of pear slices by inhibiting the polyphenol oxidase (PPO) reactions. Hence, this study suggest that bromelain and aloe vera work well as anti-browning agents and suitable to be used as natural food additives that can provide nutrients while maintaining food quality.

A Novel Plant Based Ultrasound Phantom

Introduction In most of the ultrasound guided regional anaesthesia workshops, anaesthesiologists usually concentrate on identification of nerves & plexus on human volunteers and practice needling techniques on phantom. Proper needle insertion technique and correct manipulation are two important skills for ultrasound-guided peripheral nerve blocks. These skills can be sharpened by practicing on ultrasound phantom. It also helps anaesthesiologists to develop, practice and maintain the skills needed for regional anaesthesia and vascular access procedures [1]. But the use of phantoms is often limited due to the cost of the blue phantom [2]. Many courses use meat-based products like turkey legs or porcine models but these may not be acceptable to everyone [3,4]. Vegetable based models using gelatine also may not be acceptable as it too is made from animal products. We describe novel use of Aloe Vera (AV)stem as phantom for US guided needling training. This natural AV gel-based phantom can be used for scanning, needling and refine other relevant skills. The AV phantom can be constructed from low cost, readily available natural source and is reusable. Various materials have been used to make ultrasound training phantoms. Commercially available phantoms are expensive and homemade nerve block models are cumbersome to prepare [5]. The Aloe Vera gel is obtained from Aloe Vera plant (Aloe barbadensis miller). It is a natural product which has been used for centuries in various field specially in dermatology. Aloe Vera leaves are triangular and fleshy with serrated edges. Each leaf contains an inner clear gel which is made of 99% water and other substances (glucomannans, amino acids, lipids, sterols and vitamins) [6]. Aloe Vera is odorless and semi-transparent unlike meat-based models. Preparing the Aloe Vera US Model The covering of the leaves is non-echogenic and hence the pulp from Aloe Vera leaves is separated and placed in layers and covered with a Transparent Dressing(Te

Review on Aloe Vera is used in Medicinal Plant

Aloe vera has marvelous medicinal properties. Aloe vera is one of the most powerful and well-known medicinal plants.it has been used for more than 5000 years, and traces of it have been found in numerous civilizations. Today, it has a strong global reputation due to its widespread usage in cosmetics, particularly to treat burns and sunburn, to aid wound healing, and to fight against cell aging. Aloe vera plants also used as reinforces the immune system and improves blood circulation. The range of usage of Aloe vera is thus very blood even if it has very specific benefits for the skin. The plant Aloe vera is used in Ayurvedic, Homoeopathic and Allopathic streams of medicine, and not only tribal com-munity but also most of the people for food and medicine. The plant leaves contains numerous vitamins, minerals, en-zymes, amino acids, natural sugars and other bioactive compounds with emollient, purgative, antimicrobial, anti in-flammatory, anti-oxidant, aphrodisiac, anti-helmenthic, antifungal, antiseptic and cosmetic values for health care. This plant has potential to cure sunburns, burns and minor cuts, and even skin cancer.

Zinc oxide from aloe vera extract: two-level factorial screening of biosynthesis parameters

Zinc oxide (ZnO) was biosynthesised from aloe vera plant extract. The aloe vera plant extract was used as a reducing agent in biosynthesis process. Green synthesis method was proposed because it is cost effective and environmentally friendly. ZnO was characterised using SEM, EDX, FTIR, and XRD analyses. The antibacterial property was tested against Escherichia coli. The effects of aloe vera volume (2–50) mL, precursor concentration (0.001–0.300) M, reaction time (20 min–48 h), and temperature of the reaction (26–200) °C on ZnO characteristics were investigated and screened using a two-level factorial method. Based on the observation and ANOVA analysis result, precursor concentration was the only significant parameter that affected the production of the ZnO nanoparticles (NPs). The EDX analysis proved the presence of ZnO while the SEM analysis confirmed the average size of ZnO particle size was in the range of (18–618) μm with a rod-shape appearance. The XRD analysis showed that the average crystallite size was 0.452 μm and it was in the hexagonal phase. It was also proven to have antibacterial property against E. coli.

Plant Extract Assisted Green Synthesis and Structural Studies of Spinel Nial2o4 Nano-Catalysts

Spinel NiAl2O4 nanoparticles were synthesized via Aloe vera plant extract microwave heating method. Aloe vera plant extract-assisted combustion method makes straightforward synthesis, which is alternative process of spinel preparation. The synthesized spinel NiAl2O4 nanoparticles was successfully characterized by powder XRD pattern, FT-IR, EDX analysis, HR-SEM analysis, and VSM techniques. XRD, FT-IR and EDS results established the development of spinel and single cubic phase NiAl2O4 nanocrystals. The formation of spherical shaped nanoparticles was affirmed by HR-SEM technique. VSM measurements revealed that NiAl2O4 sample have superparamagnetic behavior.

Potential application of Aloe Vera-derived plant-based cell in powering wireless device for remote sensor activation.

It is well proven that electrical energy can be harvested from the living plants which can be used as a potential renewable energy source for powering wireless devices in remote areas where replacing or recharging the battery is a difficult task. Therefore, harvesting electrical energy from living plants in remote areas such as in farms or forest areas can be an ideal source of energy as these areas are rich with living plants. The present paper proposes a design of a power management circuit that can harness, store and manage the electrical energy which is harvested from the leaves of Aloe Barbadensis Miller (Aloe Vera) plants to trigger a transmitter load to power a remote sensor. The power management circuit consists of two sections namely; an energy storage system that acts as an energy storage reservoir to store the energy harvested from the plants as well as a voltage regulation system which is used to boost and manage the energy in accordance to a load operation. The experimental results show that the electrical energy harvested from the Aloe Vera under a specific setup condition can produce an output of 3.49 V and 1.1 mA. The harvested energy is being channeled to the power management circuit which can boost the voltage to 10.9 V under no load condition. The harvested energy from the plants boosted by the power management circuit can turn ON the transmitter automatically to activate a temperature and humidity sensor to measure the environmental stimuli periodically with a ton of 1.22 seconds and toff of 0.46 seconds. This proves that this new source of energy combined with a power management circuit can be employed for powering the wireless sensor network for application in the Internet of Things (IoT).

Structural Properties of Spinel Coal2o4 Nano-Catalysts Synthesized from Plant Extract using Green Synthesis Technique

Spinel CoAl2O4 nanoparticles were synthesized via Aloe vera plant extract microwave heating method. Aloe vera plant extract-assisted combustion method makes straightforward synthesis, which is alternative process of preparation of spinel nanoparticles. The harmonized spinel CoAl2O4 nanoparticles was successfully characterized by powder XRD pattern, FT-IR, EDX analysis, HR-SEM analysis, and VSM techniques. XRD, FT-IR and EDS results established the development of spinel and single cubic phase CoAl2O4 nanocrystals. The formation of spherical shaped nanoparticles was affirmed by HR-SEM technique. VSM measurements revealed that CoAl2O4 sample have superparamagnetic behavior.

Questioning the Aloe Vera Plant and Apple Memristors.

Non-linear electrical properties of a (biological) tissue can be revealed by non-linear electrical measurements, which means that the applied stimulus itself affects the measurement. If resulting voltage–current plots exhibit pinched hysteresis loops, the underlying tissue may be classified as a memristor, a state dependent resistor. The aloe vera plant and apples have been found to be memristors. However, polarization processes on the electrodes are also non-linear and may affect the measurement. Apples and aloe vera conduct electrical current very well and it is likely that the recordings are actually dominated by the polarization impedance of the electrodes. Here, we study the non-linear properties of aloe vera and apples with two different measurement electrode types. Furthermore, we measured also on the extracted liquids from one aloe vera leaf and one apple, leading to similar results. We concluded, unlike previous studies on these subjects, that the memristive properties originate from electrochemical reactions on the electrodes rather than the apples or aloe vera themselves.

Effects of Shade on Antibacterial Production in <i>Aloe Vera</i> Plants: A Model Course Based Undergraduate Research Experience for First- and Second-Year Chemistry and Biochemistry Students

As a means to promote student engagement in chemistry, this proposed course-based undergraduate research experience (CURE) provides an opportunity for students to research a topic that is particularly prevalent in national public health headlines. Antibiotic resistance is a public health issue of increasing concern as result of the overuse and often misuse of antibiotics. For this reason, it is important to explore a variety of avenues to discover novel antibiotics, including isolating bioactive natural products from plants and other organisms. Organisms such as plants, bacteria, and fungi have long been utilized for their antibacterial properties, but little is known for how the majority of these natural remedies are affected by varying growth conditions. Herein, we propose a method through which students in first- and second-year chemistry or biochemistry laboratory courses can manipulate growth factors of Aloe vera, an antibiotic-producing plant, to probe how those manipulations affect antibiotic production and therefore Aloe vera’s effectiveness as an herbal medicine. Aloe vera plants were grown under varying shade conditions, and their gel was extracted and evaluated for antibiotic activity using both a broth microdilution assay and an agar diffusion assay against Staphylococcus aureus and Escherichia coli. Through this model, students are able to develop critical thinking skills, derive a hypothesis, and use analytical and biochemical techniques to evaluate their hypothesis.

Evaluation of the efficacy of using ultraviolet radiation and the two extracts of peppermint and aloe vera plants in reduction Fumonisin B1 toxin and growth of Fusarium proliferatum isolated from imported banana fruits

The study was conducted in the laboratories of Faculty of Agriculture/University of Kufa for the period from 24/12/2017 to 24/2/2019 to isolate and diagnose fungi associated with imported bananas fruits (Musa spp.) in local markets. The study included five varieties of bananas for different origins to identify the ability of isolated fungi and their production for mycotoxins, including F. proliferatum. and evaluation of the effectiveness ultraviolet radiation uv-c with a wavelength of 254 nm, for 15 minutes and different concentrations of peppermint and aloevera extracts were evaluated their effectiveness in reducing of Fumonisin B1. The results showed the effect of UV-C and different concentrations of hot water extracts of peppermint and aloe vera to inhibit growth fungus F. proliferatum on PSA medium, a significant effect of peppermint extract,as it showed an inhibition of the growth fungus F. proliferatum. Concentration 1.5%, with amounted to 75.52% compared to control treatment, in which the percentage of inhibition was 0.00%. Ultraviolet light (UV-c) had a significant role in inhibiting the growth of the fungus. Inhibition which increasing the duration of the fungus exposure to ultraviolet (UV) radiation, as the duration of 15 minutes gave the highest rate of inhibition amounting to 81.35 % compared to control treatment of 0.00 %. The results also showed the high efficiency of ultraviolet radiation and peppermint extract at concentration of 1.5% in reducing toxicity of Fumonisin B1 and the protecting banana fruits from fungal infection, in addition to the possibility of prolonging the storage period.

The effect of shape and size of ZnO nanoparticles on their antimicrobial and photocatalytic activities: a green approach

In this paper, ZnO nanoparticles (NPs) having potent photocatalytic and antimicrobial activities have been synthesized by using the aloe vera plant extract. The ZnO NPs have been synthesized using $$(\hbox {Zn}(\hbox {CH}_3\hbox {COO})_{2}{\cdot } 2\hbox {H}_{2}\hbox {O})$$ (5, 10 and $$50\,\hbox {mmol}\, \hbox {kg}^{-1}$$ ), at temperature $$70{^{\circ }}\hbox {C}$$ and pH 11.5. The synthesized NPs were examined using UV–Visible, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and transmission electron microscopy (TEM) characterization techniques. TEM analysis confirms the synthesis of ZnO NPs with hexagonal, spherical, cylindrical and cuboidal shapes decorated under different concentrations of precursor metal salt. UV–Visible studies revealed that ZnO NPs have a wide energy band gap varying from 3.36 to 3.43 eV. The synthesized ZnO NPs were examined for the photocatalytic degradation of methyl orange dye which resulted in up to 95% degradation. ZnO NPs are also inspected for the antibacterial activity against Bacillus subtilis (MTCC 441), Staphylococcus aureus (MTCC 737) and Escherichia coli (MTCC 739) pathogenic bacteria.

Chemical Constituents, Antimicrobial Activity, and Food Preservative Characteristics of Aloe vera Gel

Edible coating gels developed from the Aloe vera plant have been used as a traditional medicine for about 3000 years. Aloe vera contains approximately 110 potentially active constituents from six different classes: chromone and its glycoside derivatives; anthraquinone and its glycoside derivatives; flavonoids; phenylpropanoids and coumarins; phenylpyrone and phenol derivatives; and phytosterols and others. Apart from medicinal uses, Aloe gels have an important role in food preservation as edible coatings. They provide an edible barrier for atmospheric gases and moisture and help to reduce the respiration and transpiration of fresh produce, which helps to preserve its postharvest quality. To date, numerous studies have been conducted on the postharvest use of Aloe vera gel. The present review article summarizes and discusses existing available information about the chemical constituents, antimicrobial activity, and food preservative characteristics of Aloe vera.

Screening of plant growth-promoting endophytic bacteria from the roots of the medicinal plant Aloe vera

This work aimed to test the hypothesis that the root bacteria of Aloe vera (Asphodelaceae) present multifunctionality with potential in biotechnology for plant growth. A total of 129 endophytic bacteria from three environments, a field, a garden, and nursery were isolated and evaluated for indole-3-acetic acid-producing ability. Thirty-two of the total bacteria isolates were evaluated for siderophore production, phosphate solubilization and antibiosis to phytopathogenic fungi. The phylogenetic analysis revealed the presence of four groups: Proteobacteria, Firmicutes, Bacteroidetes, and Actinobacteria. The functional trait for indole-3-acetic acid (IAA) synthesis was observed in 32 of the isolates, with emphasis on the 135 V Enterobacter tabaci strain, which revealed the highest production (225.2 μg mL−1). The results found for Bayóvar phosphate solubilization were not expressive, with the highest values observed for the bacterium 149H Paraburkholderia sp. (45.7 mg L−1). The 3 V isolate Brevibacillus agri presented 45.6% antagonism against Sclerotinia sclerotiorum. The greatest inhibition of the phytopathogens Fusarium sp. and Rhizoctonia sp. was observed with 149H Paraburkholderia sp. and 348 V E. tabaci, respectively. Studies evaluating to evaluate the potential of endophytic bacteria of A. vera for plant growth promotion are rare and our results indicate that the isolates 135 V and 348 V E. tabaci and 149H Paraburkholderia sp. have potential for to be field-tested as growth promoter inoculants.

Short-term effects of feeding powdered Aloe vera (Aloe barbadensis) and nettle (Urtica dioica) on growth performance and stimulation of innate immune responses in rainbow trout (Oncorhynchus mykiss)

To evaluate the nutritional impacts of powdered Aloe vera and nettle plants on growth performance and some parameters of immune response in rainbow trout, a total of 462 fish with an average weight of 10.80 ± 0.59 g were obtained from authentic fish farms. The fish were fed in seven groups with diets containing 0.5, 1, and 1.5% of Aloe vera powder and 0.5, 1, and 1.5% of nettle powder, and also a control with a basal diet without herbal supplementation for 4 weeks. The results of fish biometry showed that dietary supplementation with the powdered plants led to significant differences in weight gain, specific growth rate, feed conversion ratio, and feed efficiency ratio with 1.5% of Aloe vera and 0.5% of nettle supplementations compared with the control group. The treatments displayed increased hematological parameters as well as serum biochemical parameters. Serum lysozyme and complement system activities elevated due to dietary supplementations with the best results found in treatments with 1.5% of Aloe vera and 0.5% of nettle. However, despite an increase in respiratory burst activity of leukocytes in fish fed with powdered plants, no significant differences were observed as opposed to the control.

Antifungal activity of neem and Aloe vera formulation mediated zirconium oxide nanoparticles

The aim of the research is to access the Anti-fungal activity of Neem and Aloe Vera composition mediated zirconium oxide nano particles. The procedure includes a collection of Azadirachta indica (neem) and Aloe Vera plant leaves and preparation of plant extract, Synthesis of zirconium oxide nanoparticles using a herbal formulation and Anti-fungal activity determination of synthesised zirconium oxide nanoparticles. The objective is to evaluate the activity done by neem and Aloe Vera composition mediated zirconium oxide nano particles against fungal infection. As a result, the addition of nanoparticles to prepared plant extracts showed mild or no colour change. Thus zirconium oxide nanoparticles are colourless in nature. But turbidity in solution appears after the addition of nanoparticles. Graphical representation of the synthesis of nanoparticles showed a peak at 350 nanometers(nm) in both initial and final readings, but the rate of absorbance showed a mild increase in final reading which confirms the synthesis of the nanoparticle. The anti-fungal activity was checked against 3 pathogenic fungi Aspergillus fumigatus, Aspergillus niger, Candida albicans and it showed mild ring of a zone of inhibition around the well. Zone of inhibition increases with an increase in the quantity of nanoparticles in the well. Zone of inhibition proves the anti-fungal activity. To conclude, Azadirachta indica (neem) and Aloe Vera composition mediated zirconium oxide nanoparticles show anti-fungal activity.

RESPONS TANAMAN LIDAH BUAYA (Aloe vera MILL) TERHADAP BEBERAPA JENIS PUPUK ORGANIK

The purpose of this study was to determine the response of aloe vera plants to several types of organic fertilizers. The design used in this study was a Completely Randomized Design (CRD) with 7 organic fertilizer treatments namely: Without organic fertilizer, chicken manure, cow manure, goat manure, oil palm empty bunch compost, corn bokashi, and vermicelli Each treatment consisted of 5 replications so that there were 35 units of experiment with 4 plants per plot, two of them were used as sample plants, and the whole plant became 140 plants. The parameters observed in this study were the increase in the number of leaf midribs (leaves), leaf width (cm), leaf midrib length (cm), leaf weight (gram), plant biomass (gram) and root volume (ml). The last observation data were analyzed statistically and continued with a BNJ follow-up test at the level of 5%. Research shows that the response of aloe vera plants to several types of organic fertilizers significantly affects the parameters of leaf width, leaf midrib length, leaf weight, and plant biomass. The best treatment on cow manure with a dose of 50 g / plant.

Quantitative Estimation of Aloin in Aloe Vera and its Commercial Formulation by using UV Spectroscopy

In Indian Ayurvedic system of medicine the leaf of Ghritkumari has been extensively used as a cathartic agent to treat severe stomach constipation. The aloe vera plant is used as food supplement and also used in cosmetic products to treat different skin problems. In order to develop reliable quality control marker to check its potential toxicity and carcinogenic activity and to check the commercial samples of Aloe vera for authenticity and purity, UV Spectroscopy analysis has been done. It has been found that aloin is present in a few commercial samples. HPLC, Infra-Red and thin layer chromatography methods have been reported for aloin determination in commercial samples. Therefore, UV Spectrophotometric method was developed for determination of aloin in commercial formulations.

Eco-friendly synthesis of aloe vera plant extract decorated iron tungstate nanorods immobilized Nafion for selective and sensitive determination of theophylline in blood serum, black tea and urine samples

Abstract This paper describes a selective and sensitive detection of bronchodilators drug (theophylline) using aloe vera plant extract decorated iron tungstate nanorods (AFW) immobilized Nafion (Nf) modified glassy carbon electrode (GCE) (AFW/Nf/GCE). The AFW was synthesized by the co-precipitation method and characterized by UV-visible spectroscopy, x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), elemental analysis (EDX) and electrochemical studies. Interestingly, the oxidation of theophylline with AFW/Nf/GCE displayed, a superior electrocatalytic activity, when compared with bare GCE and iron tungstate (FW) modified GCE. Besides, oxidation of theophylline in electrochemical sensor revealed that the tremendous current response linear ranges from 0.1-160μM and low detection limit (LOD) 0.0028μM. The electrochemical sensor studies showed a tremendous selectivity in biological and food samples. Besides, it showed manifested stability and reproducibility. The proposed method has been applied for the selective determination of theophylline in real samples such as human serum, black tea, and urine samples.

Physiological and yield responses of Aloe vera plant to biofertilizers under different irrigation regimes

Aloe vera (Aloe barbadensis Miller) is one of the most important medicinal plants with high resistance to drought, whose tolerability can be promoted using biofertilizers. The purpose of this study was to determine the influence of biofertilizers on some physiological traits and leaf fresh weight of Aloe vera under different irrigation regimes. The experiments were conducted in a research field in Iran (Boushehr with warm and dry climate) during 2016-2018. Irrigation treatments included 25, 50, 75 and 100% of water requirement and the applied biofertilizers treatments were mycorrhizal fungi (MF) (Glomus mosae), phosphate solubilizing bacteria (PSB) (including Pseudomonas putida strain P13 and Pantoea agglomerans strain P5), MF + PSB, and control (without any biofertilizers). The results of three harvests showed advantages of biofertilizers (specially the combination of MF and PSB) utilization on all determined factors such as total chlorophyll and carotenoid contents, leaf proline, and soluble sugar amount. The highest yield was obtained in full irrigation, but due to the absence of significant difference in leaf fresh weight of this treatment with 50% irrigation, as well as the water deficit in Boushehr, located in semi-arid region, 50% irrigation and combination of MF and PSB biofertilizers is recommended. Therefore, Aloe vera is an acceptable option for planting in Boushehr province according to its scant water consumption.