جستجوی مقالات مرتبط با کلیدواژه « aloe vera » در نشریات گروه « محیط زیست »

Removing metal pollutants from water sources has become a critical environmental concern, demanding ongoing research and innovation in remediation technologies. Among the treatment methods, adsorption, using organic materials derived from agro-industrial wastes, stands out. The use of bioadsorbents derived from agro-industrial wastes, such as aloe vera, can be an effective and environmentally friendly solution for removing aluminum or other pollutants in irrigation water. This study aims to evaluate the aluminum removal capacity of a bioadsorbent developed from aloe vera processing wastes, using an adsorption column at a laboratory scale. For this purpose, tests were carried out with different doses of bioadsorbent and at different influent pH, using a two-factor, three-level factorial design. FT-IR, RAMAN and SEM analyses were performed to characterize the adsorption mechanism between aluminum and the bioadsorbent, which is quite complex. The present study demonstrated that the developed bioadsorbent has an adsorption capacity between 1.14-0.64 mg/g and achieved aluminum removal rates above 73% in all experiments, with the maximum removal (about 98%) observed at pH 4.5. This high efficiency in aluminum removal, combined with the use of agro-industrial waste as a bioadsorbent source, makes it a cost-effective and environmentally friendly solution. This suggests a promising potential for real-world water treatment applications, particularly in irrigation systems. Such an approach offers a sustainable and efficient solution for contaminant removal, in line with the increasing focus on environmental responsibility in water management.

A newly developed Smart Pouch with enclosed biomaterial (Aloe vera and coconut husk powder) has been experimented for elimination of heavy metals i.e. (Pb2+, Cu2+, Ni2+ and Zn2+) from wastewater. The effect of concentration, pH, temperature, contact duration etc. was investigated using batch experiments which resulted that the Pouch may be accepted for convenient, efficient and low-cost accumulation of several heavy metals simultaneously from waste water. The maximum Pb removal was 99.99%, 93.21% for Cu, and for Ni, it was 91.97% whereas for Zn, 86.41% was obtained and also, the uptake capacity of pouch was quite sensitive towards initial metal concentration in the studied range of 10-200mg/L present in wastewater. The findings were further interpreted by quantum chemical study as theoretical support, various adsorption isotherms, FTIR, SEM, XRD, and physiochemical properties of metal ions to justify the synergized performance of new Pouch. A good correlation was found between experimental methods and theoretical findings.

The aim of this study was to evaluate the effects of Aloe vera extract (AE) on the immunity responses and hematological parameters in rainbow trout (Oncorhynchus mykiss) fry to develop alternative drug to chemotherapeutics and antibiotics in aquaculture. 1200 rainbow trout (Oncorynchus mykiss) fry weighing 2±0.2 gram were randomly allocated into two treatment groups including: 1) placebo-treated group (control), 2) Aloe vera extract-treated group, each of three replicates. The fishes were hand-fed once a day with diet medicated AE or placebo at a rate of 1% of feed weight in the first feeding for 8 weeks. At the end of every two weeks 24 hrs after feeding, some of hematological and immunological parameters were analyzed. The results showed that serum total protein, albumin and globulin, respiratory burst activity, phagocytic activity and serum lysozyme activity vary among the two treatment groups which were found to be higher in AE-treated group (p<0.05). However there were no significant differences in hematological parameters between two groups. It was concluded that supplementation of AE at a rate of 1% registered higher immunological responses in compared to placebo group. Therefore, supplementation of AE in fish diets would enhance the nonspecific immunity responses and would be use particularly at time of outbreaks.

For centuries, Aloe Vera has been used by many different cultures. The ancient Greeks, the Romans, the Babylonians, Indians and the Chinese have all used Aloe Vera as a medicinal plant. One of the common experimental cancer models is sarcoma-180. When Aloe was administered to mice bearing S-180 tumors, the tumor growth was inhibited. Aloe vera is a dietary supplement and not a regulated drug. There is no guarantee of strength, purity, or safety of these products. Aloe vera is approved by the Food and Drug Administration as a food additive for flavor.

The effect of Gibberellic Acid (GA3) and Benzyladenine (BA) on Aloe vera was evaluated at pot cultivation conditions. This study was performed in two factorial test based on complete random plan and 4 repeats with 12 treatments. The main factor was included spraying, drip and spraying + drip. Secondary factor was included concentrations of GA3 and BA at 0, 100, 200 and 400 mg.L-1 levels. The number of Offset was increased by addition of GA3 and BA levels. The results show that the number of Offset has been better in drip application than spraying method. The use of drip+spraying method has caused improve in the plant than other methods. The maximum offset was obtained in 400 mg.L-1 concentration of BA