Comparative Phytochemical and Antioxidant Properties of Costus pictus and C. speciosus

Prabhu, Suchitra Narayan; Puneeth,; Rao, P. Kanta; Narayana, Sunil Kumar Koppala; Ravishankar, B

doi:10.5530/jams.2017.2.2

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The ethanol and acetone leaf extract of Hellenia speciosa showed positive for tannins, saponins, flavonoids, quinones, glycosides, cardiac glycosides, terpenoids, phenols, coumarins, steroids, alkaloids, betacyanin except for anthocyanin. Similar findings were reported from the rhizomes of Costus speciosus 22,23 and leaves of Costus pictus 24,25 . The phenols and flavonoids present in the plant extract could protect living organisms against reactive oxygen species 26,27 .…”

Section: Discussion: Phytochemical Screening Of Leaf Extract Ofsupporting

confidence: 85%

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2019

IJPSR

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Diabetes mellitus is one of the most common endocrine disorder which causes microvascular and macrovascular complications. Herbal medicines derived from plant extracts are used to treat various diseases because of its fewer side effects. The present investigation includes a screening of phytochemicals and evaluation of the in-vitro and in-vivo anti-diabetic activity of Hellenia speciosa leaves extract. The leaf extract was screened for various phytochemicals and then subjected to invitro anti-diabetic study using alpha-amylase and alpha-glucosidase enzyme. Inhibition of carbohydrate digestive enzymes amylase and glucosidase can effectively decrease the postprandial increase of glucose level. This is an important strategy in the management of diabetes. This was followed by the in-vivo study to evaluate the anti-diabetic effect of Hellenia speciosa leaves in normal and alloxan induced diabetic rats. The oral administration of crude leaf extract in diabetic rats for 28 days at a dosage of 300 mg/kg body weight exhibited a significant reduction (P<0.05) in fasting blood glucose level and remarkable increases in serum insulin level. The action of Hellenia speciosa was also compared with anti-diabetic drug metformin (350 mg/kg). An oral glucose tolerance test was also performed in the rat model. The study shows that the leaf is nontoxic and regenerates the toxic effect induced by alloxan. Based on the above results, it is evident that the leaves of Hellenia speciosa have an anti-diabetic effect and can be considered as an effective formulation for future studies.

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Section: Discussion: Phytochemical Screening Of Leaf Extract Ofsupporting

confidence: 85%

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2019

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“…The developed plates were visualized in UV 254, 366nm and then derivatised with vanillin sulphuric acid reagent and scanned under UV 254, 366 nm following derivatisation. Rf, colour of the spots and densitometric scan were recorded [17] .…”

Section: Hptlc Finger Printingmentioning

confidence: 99%

Pharmacognostical and Phytochemical Characterisation of Cork and Seed of Tamarindus indica Linn.

Naik¹,

Padigar²,

Bairy³

et al. 2018

JAMS

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Introduction: Chincha (Tamarindus indica Linn.) is a tropical tree which is extensively used in Ayurveda and folk practice across South Canara for various ailments such as indigestion, as cardiac tonic, vermifuge, burning sensation, diarrhoea and diabetes. The cork and seed of T. indica has been successfully used by the folklore practitioners of Udupi District in the treatment of various types of wounds. As systematic authentication of herbal raw drug is becoming increasingly important to produce standardized herbal products this study was planned. Methods: Macroscopic features and powder microscopy of cork and seed of T. indica are documented along with their photographs. Phytochemical test was carried out in order to figure out the constituents present in the seed and cork. HPTLC finger print profile of ethanol extract of T. indica cork and seed was also been carried out. Results: Powder microscopy showed the presence of calcium oxalate crystals, group of sclerieds, Crystal fibres in cork and fragments of cotyledone with fixed oil, Parenchymal cells in seeds. Phytochemical screening showed the presence of coumarins, flavanoids, saponins, tannin, alkaloid, steroid and carbohydrate. Conclusion: These diagnostic features can be utilized as a fingerprint for the identification and differentiation of their substitute and adulterants of the plant.

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“…Prabhu et al found that the corrosion of 6063 aluminum alloy in NaOH media was more serious than in H 3 PO 4 media, and the corrosion rate increased with the concentrations of H 3 PO 4 and NaOH. 14 Similarly, Hsu et al found that the material removal rate of aluminum decreased with the increase of pH value of acidic polishing slurry. 15 Wang et al proposed that in acidic media, material removal in the non-passivating region (pH < 4) is a competition among passivation, mechanical wear and chemical etching.…”

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confidence: 94%

Structure-Performance Relationships of Complexing Agents on the Chemical Mechanical Polishing of 6063 Aluminum Alloy

Xi²,

Jiang³

et al. 2023

ECS J. Solid State Sci. Technol.

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Aluminum alloy has wide applications in many industries due to its unique properties. Chemical mechanical polishing (CMP) is commonly used to treat aluminum alloy to generate mirror-finish surface. In this study, the effects of pH and H2O2 concentration on the CMP of 6063 aluminum alloy were studied. Better CMP performance was obtained in basic media with 1.0 wt% H2O2. Moreover, complexing agents with different structures and functional groups were evaluated for the CMP of Al-alloy, and their structure-performance relationship was systematically studied. It was found that complexing power, steric hindrance, and electrostatic repulsion of complexing agents were important factors determining material removal rate and surface roughness. The complexing agent with high complexing power can favor the dissolution and Al substrate. The complexing agent with large steric hindrance and high charge density can form a stable boundary layer on the surface of substrate and improve its dispersion ability, thereby improving MRR and surface quality. In addition, the amino functional groups of complexing agents exist in the form of neutral molecules at pH 10, which is inferior to carboxyl complexing agents due to their poor static repulsion. X-ray photoelectron spectroscopy analysis confirmed the anchoring of carboxylate anions on the sample surface.

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Comparative Phytochemical and Antioxidant Properties of Costus pictus and C. speciosus

Cited by 7 publications

References 6 publications

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Pharmacognostical and Phytochemical Characterisation of Cork and Seed of Tamarindus indica Linn.

Structure-Performance Relationships of Complexing Agents on the Chemical Mechanical Polishing of 6063 Aluminum Alloy

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