Vera Powder Research Articles

Diffusion of hydroxyl ions from calcium hydroxide and Aloe vera pastes.

This study evaluated the diffusion through the dentinal tubules of hydroxyl ions from different calcium hydroxide (CH) pastes containing Aloe vera. Sixty single-rooted bovine teeth were used. The tooth crowns were removed, the root canals were instrumented and the specimens were assigned to 4 groups (n=15) according to the intracanal medication: Group CH/S - CH powder and saline paste; Group CH/P - CH powder and propylene glycol paste; Group CH/A - calcium hydroxide powder and Aloe vera gel paste; Group CH/A/P - CH powder, Aloe vera powder and propylene glycol paste. After placement of the root canal dressings, the teeth were sealed coronally and apically with a two-step epoxy adhesive. The teeth were placed in identified flasks containing deionized water and stored in an oven with 100% humidity at 37 °C. After 3 h, 24 h, 72 h, 7 days, 15 days and 30 days, the deionized water in the flasks was collected and its pH was measured by a pH meter. The obtained data were subjected to statistical analysis at a significance level of 5%. The results demonstrated that all pastes provided diffusion of hydroxyl ions through the dentinal tubules. The combination of Aloe vera and CH (group CH/A) provided a constant release of calcium ions. Group CH/A/P showed the highest pH at 24 and 72 h. In conclusion, the experimental pastes containing Aloe vera were able to enable the diffusion of hydroxyl ions through the dentinal tubules.

Effect of Dietary inclusion of Aloe vera (Aloe barbadensis) and Yeast (Saccharomyces Cerevisiae) powder on blood parameters of Broilers

Experiment was conducted on 72 day old chicks of same hatch upto six weeks of age to investigate the effect of Aloe vera (Aloe barbadensis) and Yeast (Saccharomyces Cerevisiae) powder on the hematological parameters of broilers. Chicks were randomly divided into four groups 18 chicks in each. Control group received standard broilers diet. Chicks in second, third, fourth group received standard broilers diet supplemented with the Aloe vera (Aloe barbadensis) and Yeast (Saccharomyces Cerevisiae) powder @ 0.00% (control), 0.50% (Yeast), 0.50% (Aloe vera), and 0.50% Yeast + 0.50% Aloe vera were incorporated into the basal diet for six weeks. At the end of experiment nine broilers from each group should be selected, sacrificed and blood samples should be collected with the help of anticoagulant for determination of hematological parameters. Results revealed a significant effect of Aloe vera and Yeast powder in feeds on mean heterophill (P<0.05) were significantly on feed supplemented with 0.50% Yeast + 0.50% Aloe vera powder. It was concluded from this study that 0.50% Yeast + 0.50% Aloe vera powder feed supplemented has a beneficial impact on the growth performance of broilers chicks.

Effect of Dietary Aloe vera and Yeast powder on muscle growth of broiler chicks

The purpose of this research work was to evaluate the Aloe vera (Aloe barbadensis) and Yeast (Saccharomyces Cerevisiae)powder. A total of 72 (Arbor-Acres) day old chicks were used in this study. Four levels of anAloe vera and Yeast powder at the rate of 0.00%, 0.50% (Yeast), 0.50% (Aloe vera), and 0.50% Yeast + 0.50% Aloe vera were incorporated into the basal diet for six weeks. Feeding period for all groups was lasted for 42 days. Results revealed a significant effect of Aloe vera and Yeast powder in feeds on weight of breast, thigh, and leg (P<0.05) were significantly on feed supplemented with0.50% Yeast + 0.50% Aloe vera powder. It was concluded from this study that 0.50% Yeast + 0.50% Aloe vera powder feed supplemented has a beneficial impact on the growth of these muscle tissues.

Study of spray drying of the Aloe vera mucilage (Aloe vera barbadensis Miller) as a function of its rheological properties

Spray Drying (SD) was used to obtain Aloe vera powder from fresh plants. The powder was reconstituted in an aqueous medium and its rheological properties, particle size distribution (PSD), thermal properties (differential scanning calorimetry, DSC), and morphology (scanning electron microscopy, SEM) were evaluated in order to find an alternative to natural gum to be used in the food industry. Rheological measurements were conducted at 25 °C in aqueous concentrations of 3g/100 mL and 6 g/100 mL. A 23 factorial design was used with three central points to evaluate yield, efficiency and the rheological properties of reconstituted powders, results were compared with a liophilized (FD) sample of A. vera mucilage. Experimental results showed that the shear viscosity decreased with the increase of the inlet air temperature and the speed of atomization, and it increased with increasing feed flow in SD. Additionally, most powders obtained in all treatments have an average particle diameter of ∼10 μm with a modal distribution (PSD). The best conditions of SD in order to obtain a good thickening agent were: 150 °C inlet temperature, 1.5L/h feed rate and atomization speed of 275,000 rpm, and with rheological properties very close to those of the FD sample.

Sunscreen Liquid Foundation Containing &lt;i&gt;Naringi crenulata&lt;/i&gt; Powder

Powdered bark and stem of Naringi crenulata or thanaka, the traditional sunscreen cosmetics, were sun protection factor (SPF) analyzed. SPF of the bark powder (1.51 ± 0.31) was comparable to TiO2 (1.99 ± 0.09), whereas that of stem was lower (1.13 ± 0.04). The optimum liquid foundation formula contains N. crenulata bark powder (10% w/w), TiO2 (12% w/w) and natural SPF booster (Aloe vera powder, 2% w/w). This broad spectrum sunscreen (critical wavelength = 387.900 ± 0.000 nm) potentially protected UVB (SPF = 35.467 ± 0.136) and UVA (5th boots star). This porcelain natural liquid foundation determined by CIELAB system was stable under heating-cooling for 6 cycles and one month storage at 4, 25 and 45 °C, separately, with a consistence of pH and viscosity. Its UVA protection efficiency was maintained and SPF was not significantly reduced. This presenting new herbal sun protection liquid foundation is available for cosmetic industry and would be further developed to prolong its efficacy including preference test in the panelist.

Anti-ulcer effect of Aloe vera in non-steroidal anti-inflammatory drug induced peptic ulcers in rats

This study was performed to determine the effects of Aloe vera on indomethacin induced ulcers in rats. Albino rats (Wister strain) of either sex weighing between 150 and 200 gms were randomly allotted into four groups with six animals each. Indomethacin was administered orally in the dose of 20 mg/kg body weight and kept fasting for 6 h. A. vera powder was mixed with gum acacia, the solution was administered orally through the oral gavage to rats in the dose of 200 mg/kg. Omeprazole (20 mg/kg) was administered intraperitoneally as a standard drug for present study. At the end of the study, rats were sacrificed and stomachs were opened and stored in 5% formalin solution, ulcer index and histological changes were studied. Student-‘t’ test analysis was used for the present study. It was found that A. vera showed statistically significant anti-ulcer activity comparable to standard drug omeprazole. The mean ulcer indexes of two drugs were statistically significant (P value is < 0.001). Therefore, the results were suggestive of anti ulcerogenic activity of A. vera.

Prediction of optimal conditions of infrared assisted freeze-drying of aloe vera ( Aloe barbadensis) using response surface methodology

The present study illustrates an extensive experimental study on infrared (IR) assisted freeze-drying of aloe vera ( Aloe barbadensis) coupled with statistical analysis. A ‘three parameter three level’ face centered central composite design (FCCD) has been employed to develop multivariate regression models in order to evaluate the influence of process parameters on the quality of the freeze-dried aloe vera powder. Optimal freeze-drying conditions of 8.5 W/g IR power, 80.24 °C product temperature and 6.67 h drying time have been established corresponding to minimum moisture content of 3.49%, maximum wettability of 52.84 s and maximum yield percent of 3.87 through response surface methodology (RSM). Separate validation experiments at the derived optimal conditions ascertained the predictive ability of the developed model equations. The outcome of this study would contribute to development of technical capabilities for the design of freeze-driers applicable to such high valued medicinal herbs.

Functional foods enriched in Aloe vera. Effects of vacuum impregnation and temperature on the respiration rate and the respiratory quotient of some vegetables

This work is part of a study on the process of production of vegetables enriched in Aloe vera using the vacuum impregnation (VI) technique. The objectives of this work were: (i) to analyze the effects of VI with Aloe vera on some quality parameters of vegetables: water activity, water content, soluble solids content, real and apparent densities, and pH; (ii) to analyze the effects of the presence of Aloe vera in VI solutions and temperature on the respiration rates (carbon dioxide production and oxygen consumption) and the respiration quotient of some vegetables (endive, cauliflower, broccoli and carrots). VI made it possible to incorporate up to 7g of Aloe vera in 100g (dry matter) of broccoli, about 4g in cauliflower and endive, and about 3g in carrot. In almost all cases, respiration rate values were higher at 20°C than at 5°C. For vegetables submitted to VI using an isotonic sucrose solution, and in comparison with fresh samples, respiration rates at 5°C were higher for broccoli, endive and carrot, but lower for cauliflower. At 20°C, they were higher in the case of broccoli, endive and cauliflower, but lower for carrots. As compared with fresh samples, and at 5°C, respiration rates were lower for all vegetables impregnated using a solution with 30g/L of Aloe vera powder; at 20°C, they were lower for cauliflower, but higher for broccoli, endive and carrots. The presence of Aloe vera in sufficient concentration seemed to compensate the metabolic stress caused by the application of vacuum.

Effects of oral aloe vera on electrocardiographic and blood pressure measurements

The effects of oral aloe vera on electrocardiographic and blood pressure measurements were evaluated. In this double-blind, placebo-controlled, crossover study, healthy volunteers over age 18 years received either 1200 mg of oral aloe vera powder or matching placebo on day 1 of the study and the treatment not received during the first phase on day 8. In each phase, electrocardiographic variables, systolic blood pressure, and diastolic blood pressure were evaluated at baseline and one, three, five, and eight hours after treatment. The primary endpoint was the maximum posttreatment Q-Tc interval over eight hours in both groups. Sixteen participants were enrolled in the study, with a mean ± S.D. age of 25 ± 5 years. No significant differences in electrocardiographic or blood pressure measurements were observed. The maximum Q-Tc interval was 419 ± 17 milliseconds in the placebo group and 422 ± 17 milliseconds in the aloe-treated group. The maximum P-R intervals in the placebo- and aloe-treated groups were 166 ± 22 and 169 ± 25 milliseconds, respectively. The maximum QRS complex duration did not significantly differ between the placebo- and aloe-treated groups (89.4 ± 9 and 89.3 ± 9 milliseconds, respectively). The maximum systolic blood pressures in the placebo- and aloe-treated groups were 120 ± 16 and 120 ± 14 milliseconds, respectively. The maximum diastolic blood pressures in the placebo- and aloe-treated groups were 74 ± 10 and 75 ± 9 milliseconds, respectively. A single dose of oral aloe vera had no effect on electrocardiographic or blood pressure measurements in young healthy volunteers.

Thermal Properties of Aloe Vera Powder and Rheology of Reconstituted Gels

Aloe vera (Aloe barbadensis L.) is a plant from the lily family that possesses therapeutic and antioxidant properties. Extracts from aloe vera leaves are widely used in skin care products, and recently in health drinks and supplements. Substandard aloe products arising from poor processing methods or adulteration with other compounds is a major problem for the aloe industry. Functional properties of aloe vera may be affected by processing procedures that involve heat or shearing action. In this study, aloe vera extract was dried using spray drying (SD), freeze drying (FD), and Refractance Window (RW) drying methods to investigate the effect of those methods on glass transition temperature (Tg), total carbohydrates, reducing groups, particle size distribution, and viscosity of solutions formed after reconstitution with deionized water. The Tg of SD aloe was in the range of 65C 3.2C compared to 70C to 78C for the latter two drying methods. Addition of corn maltodextrin contributed to shifts in Tg of aloe powder. Solutions prepared from spray-dried aloe had the lowest viscosity, while freeze-dried and RW-dried counterparts had higher and nearly equal consistency. The activation energy for network formation of solutions reconstituted from SD powder was 23.9 0.1 kJ mol-1, which was slightly lower than the 24.6 0.3 and 24.7 0.4 kJ mol-1 obtained with FD and RW drying, respectively.

Production Performance of Broilers Fed with Aloe vera and Curcuma longa (Turmeric)

An experiment was conducted to study the inclusion of Aloe vera and Curcuma longa and its combinations on production performance, viz., weight gain, feed intake and feed conversion ratio, carcass characteristics and biochemical parameters for a period of six weeks with two hundred and eighty commercial, straight run day-old Vencobb broiler chicks. These chicks were randomly grouped into seven treatments with four replicates of ten chicks each. The treatment groups consisted of control (T ), 0.1 percent 1 Aloe vera powder (T ), 0. 2 percent Aloe vera powder (T ), 0.1 percent Curcuma longa powder (T ), 0. 2 2 3 4 percent Curcuma longa powder (T ) and 0.1 percent of Aloe vera and 0.1 percent of Curcuma longa powder 5 (T ) and 0.2 percent of Aloe vera and 0.2 percent of Curcuma longa powder (T ) included in the broiler diet. 6 7 The results revealed that there was no significant difference in body weight and body weight gain between treatment groups from first week to end of the experiment period except at first week (P < 0.01). Similarly, no significant difference was recorded in feed consumption and carcass yields, but in feed conversion ratio significant (P < 0.01) difference was recorded at first week of age. Livability was 100 percent in T and T 2 3 treatment groups. The mean return over feed cost differs significantly (P < 0.01) between treatment groups up to six weeks of age, which was mainly due to difference in feed cost of Aloe vera and Curcuma longa inclusion in broiler diet.

Effect of Aloe vera and Curcuma longa (Turmeric) on Carcass Characteristics and Biochemical Parameters of Broilers

An experiment was conducted to study the inclusion of Aloe vera and Curcuma longa and its combinations on production performance, viz., weight gain, feed intake and feed conversion ratio, carcass characteristics and biochemical parameters for a period of six weeks with two hundred and eighty commercial, straight run day-old Vencobb broiler chicks. These chicks were randomly grouped into seven treatments with four replicates of ten chicks each. The treatment groups consisted of control (T ), 0.1 percent 1 Aloe vera powder (T ), 0.2 percent Aloe vera powder (T ), 0.1 percent Curcuma longa powder (T ), 0.2 2 3 4 percent Curcuma longa powder (T ) and 0.1 percent of Aloe vera and 0.1 percent of Curcuma longa powder 5 (T ) and 0.2 percent of Aloe vera and 0.2 percent of Curcuma longa powder (T ) included in the broiler diet. 6 7 The abdominal fat percentage, breast and thigh muscle cholesterol showed no significant difference between treatment groups. The serum glucose, total cholesterol, HDL cholesterol, LDL cholesterol and triglycerides level did not differ significantly between treatment groups. Haemagglutination inhibition titre against Newcastle disease revealed significant difference (P < 0.01) between treatment groups. T and T 2 3 showed higher titre value when compared with control.