Impact of spatial and climatic conditions on phytochemical diversity and in vitro antioxidant activity of Indian Aloe vera (L.) Burm.f.

Kumar, Sandeep; Yadav, Mayank; Yadav, Amita; Yadav, Jaya Parkash

doi:10.1016/j.sajb.2017.03.012

Cited by 75 publications

(55 citation statements)

References 47 publications

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“…In defense against free radicals, the use of antioxidants has been proposed (Patial et al 2019), making it necessary to supply the human body with a diet with nutrients such as vitamin C, vitamin E, and β-carotene. These substances offer high antioxidant activity and supply the deficiency of nutrients in the body (Kumar et al 2017). Currently, a growing number of studies are focusing on obtaining enriched extracts of antioxidant compounds for several purposes (Corazza et al 2018;Parveen et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Effects of ultrasound on submerged fermentation for producing antioxidant metabolites from Botryosphaeria dothidea

Valente

Confortin

Luft

et al. 2020

Braz. J. Chem. Eng.

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Antioxidant compounds were produced from submerged fermentation using Botryosphaeria dothidea. Sonication times (1-15 min) and agitations (0-150 rpm) applied to different fermentation phases (2-7 days) were evaluated for their effect on the broth antioxidant activity. In approximately 70% of assays performed with ultrasound, the antioxidant activity of the broth containing exocellular metabolites was higher than the control (without sonication), reaching a maximum value of 96%. The solid fraction (biomass after supernatant removal) corresponding to the best assay of antioxidant activity was submitted to extractions with water, ethanol or ethyl acetate to recover intracellular metabolites. The yields of extracts were 3.7 ± 2.6 wt %, 20.6 ± 3.9 wt % and 32.0 ± 4.2 wt % for ethyl acetate, ethanol and water, respectively. The use of ethanol could provide a larger number of compounds such as pentadecanoic acid, ergosta-5,8,22-trien-3-ol, and 1,4-diaza-2,5-dioxobicyclo [4.3.0] nonane. Both the supernatant and solid fractions revealed some bioactive compounds with promising antioxidant activity with the potential to replace some synthetic antioxidants.

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Section: Introductionmentioning

confidence: 99%

“…However, there are several drawbacks to these compounds, especially for the possible carcinogenicity (Dutta and Neog, 2016). Therefore, natural antioxidants have been a focus of interest in the fields of medicine, food, and cosmetic industries (Kumar et al 2017;Zabot et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of ultrasound on submerged fermentation for producing antioxidant metabolites from Botryosphaeria dothidea

Valente

Confortin

Luft

et al. 2020

Braz. J. Chem. Eng.

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“…[18] The change in geographical location associated with the climatic change can cause noticeable effect on the activities of medicinal and aromatic plants. [19] Therefore, in the current study, we explored the seeds of the plant Syzygium cumini taken from three areas of India including Delhi, Rajasthan and Maharashtra for their antimicrobial effectiveness against target pathogens that include Staphyllococcus aureus, Streptococcus pyogenes, Escherichia coli, Psudomonas aeruginosa, Salmonella typhi, Klebsiella pneumonia and Candida albicans.…”

Section: Discussionmentioning

confidence: 99%

Variations in Antimicrobial Activity of Syzygium Cumini of Different Geographical Locations

Pratibha

Nesari

Ghildiyal³

et al. 2020

Int J Ayu Pharm Res

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The emergence of antibiotic resistance and the evolution of new strains of disease causing agents, are of highly concern to the global health community. Plants are potential source of antimicrobial agents. They have been used traditionally for prevention of infections caused by micro-organisms. Description of Krimighana herbs enumerated in Ayurveda classics is suggestive towards the importance of this group of medicine. Jambu (Syzygium cumini (L.) Skeels) is a member of Myrtaceae family. In Raja Nighantu it is mentioned that plant Jambu is having Kriminashaka property. It has been widely used medicine in the prevention of various ailments like cough, Dysentary, Diabetes, inflammation and ringworm. It is well established fact that geographical variations effects the potential and activity of medicinal herbs. Hence, the present study was undertaken to investigate Syzygium cumini procured from different geographical locations including Delhi, Rajasthan and Maharashtra for their potential activity against human infections caused by pathogens. Method The aqueous extract of Syzygium cumini of all the three areas was prepared. The activity of the plant extract was evaluated against nine bacterial pathogens and one fungal strain, which include Staphyllococcus aureus, Streptococcus pyogenes, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Klebsiella pneumonia and Candida albicans. The activity was carried out using Disk diffusion method. Result and Conclusion: All samples of Syzygium cumini showed potential antimicrobial activity against four pathogens including Staphyllococcus aureus, Streptococcus pyogenes, Pseudomonas aeruginosa and Candida albicans. MIC was also evaluated against the tested pathogenic strains. The sample from Maharashtra showed MIC i.e. 80µg, 40µg, 80µg against Staphyllococcus aureus, Streptococcus pyogenes and Candida albicans respectively which is less as compare to sample from Rajasthan and Delhi. Region wise sample from Maharashtra showed good ZOI and MIC.

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“…Three different methods were used to analyze the antioxidant activity of RMPs, namely, a hydroxyl radical scavenging assay, a superoxide-radical scavenging assay, and a reducing-power assay. The hydroxyl radical scavenging activity, superoxide radical scavenging activity, and reducing-power of the RMPs were determined using a previously reported method with slight modification [ 33 , 34 , 35 ]. Vitamin C (V C ) was diluted in deionized water and used as a positive control in the above three experiments.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Polysaccharides from Ramulus mori, and Their Antioxidant, Anti-Inflammatory and Antibacterial Activities

Zhang

et al. 2019

Molecules

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The extraction of Ramulus mori polysaccharides (RMPs) was optimized using response surface methodology (RSM). The optimal process conditions, which gave the highest yield of RMPs (6.25%) were 80 °C, 50 min, and a solid–liquid ratio of 1:40 (g/mL), with the extraction performed twice. The RMPs contained seven monosaccharides, namely, mannose, rhamnose; glucuronic acid, glucose, xylose, galactose, and arabinose, in a 1.36:2.68:0.46:328.17:1.53:21.80:6.16 molar ratio. The glass transition and melting temperatures of RMPs were 83 and 473 °C, respectively. RMPs were α-polysaccharides and had surfaces that resembled a porous sponge, as observed by scanning electron microscopy. RMPs inhibited the proliferation of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa and showed antioxidant activity (assessed by three different methods), although it was generally weaker than that of vitamin C. RMPs showed anti-inflammatory activity in a concentration-dependent manner. This study provides a basis for exploring the potential uses of RMPs.

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Impact of spatial and climatic conditions on phytochemical diversity and in vitro antioxidant activity of Indian Aloe vera (L.) Burm.f.

Cited by 75 publications

References 47 publications

Effects of ultrasound on submerged fermentation for producing antioxidant metabolites from Botryosphaeria dothidea

Effects of ultrasound on submerged fermentation for producing antioxidant metabolites from Botryosphaeria dothidea

Variations in Antimicrobial Activity of Syzygium Cumini of Different Geographical Locations

Preparation of Polysaccharides from Ramulus mori, and Their Antioxidant, Anti-Inflammatory and Antibacterial Activities

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