Antioxidant Properties of Glossogyne tenuifolia

2006 ◽  
Vol 34 (04) ◽  
pp. 707-720 ◽  
Author(s):  
Joan-Hwa Yang ◽  
Shu-Yao Tsai ◽  
Ching-Mei Han ◽  
Chun-Chien Shih ◽  
Jeng-Leun Mau
Keyword(s):  
Cold Water ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Hot Water ◽  
Butylated Hydroxyanisole ◽  
Ferrous Ions ◽  
Water Extracts ◽  
Hot Water Extract ◽  
Ethanolic Extracts ◽  
Glossogyne Tenuifolia

Glossogyne tenuifolia (Labill) Cass. (Compositae) is a special medicinal plant in the Pescadores Islands. Ethanolic, cold and hot water extracts were prepared from the dried herb and their antioxidant properties and components were studied. Ascorbic acid, α-tocopherol, butylated hydroxyanisole, citric and ethylenediaminetetraacetic acids were used in assays for comparison. With regard to EC50 values in antioxidant activity, ethanolic and hot water extracts (0.08 and 0.09 mg/ml) were much more effective than the cold water extract (0.76 mg/ml). At 1.0 mg/ml, reducing capacities were 1.57, 0.31 and 1.04 for ethanolic, cold water and hot water extracts, respectively. Scavenging abilities on 1,1-diphenyl-2-picrylhydrazyl radicals were in descending order: ethanolic > cold water > hot water extracts. At 20 mg/ml, the hot water extract chelated all hydroxyl ions (100%) whereas the scavenging ability of the cold water extract was 68.86%. Chelating abilities on ferrous ions were in descending order: cold water > hot water > ethanolic extracts. Phenols were found to be the major antioxidant components. All EC50 values were below 20 mg/ml, and some even below 0.1 mg/ml, indicating that all three extracts from G. tenuifolia were rich in antioxidant properties.

scholarly journals Antioxidant properties of hot water extracts from carpophore and spores of mushroom Ganoderma lucidum

2011 ◽  
pp. 279-288 ◽  
Author(s):  
Anita Klaus ◽  
Maja Kozarski ◽  
Miomir Niksic
Keyword(s):  
Antioxidant Activity ◽  
Ganoderma Lucidum ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Reducing Power ◽  
Hot Water ◽  
Ferrous Ions ◽  
Medicinal Mushrooms ◽  
Water Extracts ◽  
Hot Water Extract

Ganoderma lucidum (Leyss.:Fr.) Karst is one of the medicinal mushrooms, which possesses enviable antioxidant properties. Objective of this investigation was to evaluate antioxidant activity, reducing power, scavenging abilities on 1.1-diphenyl-2-picrylhydrazyl (DPPH) radicals and chelating effects on ferrous ions of hot water extracts obtained from carpophore and spores of this mushroom. Hot water extract from carpophore (Gl-I) showed high antioxidant activity of 85.7 ? 0.7%, at 10 mg/ml, while antioxidant activity of hot water extract from spores (Gl-Is) was 9.2 ? 0.3% at 10 mg/ml. Reducing power of Gl-I reached a plateau of 3.4 ? 0.1 at 20 mg/ml, and 0.3 ? 0.0 at 20 mg/ml for Gl-Is. At 10 mg/ml, scavenging ability on DPPH radicals of Gl-I increased to 96.8 ? 2.5%, whereas Gl-Is scavenged DPPH radicals by 69.6 ? 2.5% at 10 mg/ml. Gl-I chelated 81.6 ? 3.6 % of ferrous ions at 20 mg/ml, while the chelating effect of Gl-Is was 73.8 ? 1.7%. The antioxidative activities of hot water extracts from carpophore and spores of the mushroom G. lucidum were concentration dependent and increased with an increase in the concentration.

Antioxidant Properties of Various Extracts from Laoying Tea (Litsea coreana L.)

2011 ◽  
Vol 183-185 ◽  
pp. 45-49
Author(s):  
Hong Fang Ji ◽  
Ling Wen Zhang ◽  
Hai Yan Zhang ◽  
Ming Duo Yang ◽  
Jian Li
Keyword(s):  
Cold Water ◽  
Southern China ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Reducing Power ◽  
Hot Water ◽  
Ferrous Ions ◽  
Water Extracts ◽  
Naturally Occurring ◽  
Chelating Ability

Laoying Tea, leaves of Litsea coreana L., is conventionally consumed as healthy tea beverage in southern China for hundreds of years. The ethanolic, cold water and hot water extracts were prepared and their antioxidant properties studied. At 160 µg/mL, the cold water extract showed a high reducing power of 1.056. With regard to the scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals, extracts were effective in the order: ethanolic > cold water > hot water extracts. EC50values for chelating ability on ferrous ions for ethanolic, cold water and hot water extracts were 10.23, 0.85 and 1.12 mg/mL, respectively. Total phenols were the major naturally occurring antioxidant components found and were in the order: cold water > hot water > ethanolic extracts. Based on EC50values, the various extracts from laoying tea were effective antioxidants.

Antioxidant Properties of Extracts from Chroogomphis rutillus

2011 ◽  
Vol 183-185 ◽  
pp. 40-44 ◽  
Author(s):  
Hong Fang Ji ◽  
Ling Wen Zhang ◽  
Hai Yan Zhang ◽  
Ming Duo Yang ◽  
Yuan Zhang
Keyword(s):  
Cold Water ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Edible Mushroom ◽  
Hot Water ◽  
Ferrous Ions ◽  
Water Extracts ◽  
Chelating Ability

Chroogomphis rutillus is an ectomycorrhizal edible mushroom available in China. The ethanolic, cold water and hot water extracts were prepared and their antioxidant properties studied. At 4 mg/mL, the ethanolic extract showed a high reducing power of 1.561, whereas those of cold water and hot water extracts were 1.161 and 0.808. With regard to the scavenging ability on 1,1-diphenyl-2-picrylhydrazyl radicals, extracts were effective in the order: ethanolic > cold water > hot water extracts. EC50values for chelating ability on ferrous ions for ethanolic, cold water and hot water extracts were 15.755, 0.059, and 0.067 mg/mL, respectively. Based on EC50values, the various extracts from C. rutillus were effective antioxidants.

Antioxidant Activities of Extracts from Pholiota Nameko

2011 ◽  
Vol 343-344 ◽  
pp. 457-462
Author(s):  
Hong Fang Ji ◽  
Ling Wen Zhang ◽  
Hai Yan Zhang ◽  
Guang Lei Li ◽  
Ming Duo Yang
Keyword(s):  
Cold Water ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Water Extract ◽  
Reducing Power ◽  
Edible Mushroom ◽  
Hot Water ◽  
Ferrous Ions ◽  
Ethanol Extracts ◽  
Northeast Of China

Holiota nameko is an edible mushroom widely cultivated in the northeast of China. The cold water, hot water and ethanol extracts were prepared and their antioxidant properties were studied. At 2 mg/mL, the cold water extract showed a high reducing power of 1.502, whereas those of hot water and ethanol extracts were 0.868 and 0.159. With regard to the scavenging ability on DPPH free radicals, extracts were effective in the order: cold water > hot water > ethanol extracts. EC50 values for chelating ability on ferrous ions for cold water, hot water, and ethanol extracts were 1.461, 0.663, and 11.791 mg/mL, respectively. Based on EC50 values, the water extracts of P. nameko were effective antioxidants.

scholarly journals Assessment of Cosmeceutical Potentials of Selected Mushroom Fruitbody Extracts Through Evaluation of Antioxidant, Anti-Hyaluronidase and Anti-Tyrosinase Activity

J ◽  
2020 ◽  
Vol 3 (3) ◽  
pp. 329-342
Author(s):  
Dang Lelamurni Abd Razak ◽  
Anisah Jamaluddin ◽  
Nur Yuhasliza Abd Rashid ◽  
Nor Ajila Sani ◽  
Musaalbakri Abdul Manan
Keyword(s):  
Cold Water ◽  
Schizophyllum Commune ◽  
Radical Scavenging ◽  
Water Extract ◽  
Antioxidant Property ◽  
Tyrosinase Activity ◽  
Hot Water ◽  
Scavenging Activity ◽  
Hyaluronidase Activity ◽  
Hot Water Extract

Cosmeceutical formulations containing naturally derived active ingredients are currently preferred by consumers worldwide. Mushrooms are one of the potential sources for cosmeceutical ingredients but relevant research is still lacking. In this study, hot- and cold-water extractions were performed on four locally-cultivated mushrooms—Pleurotus ostreatus, Ganoderma lucidum, Auricularia polytricha and Schizophyllum commune—with the aim to assess the cosmeceutical potential of these mushroom fruitbody extracts. Total phenolics, polysaccharide and glucan content were determined. Antioxidant property of the mushroom extracts was assessed by determining the DPPH radical scavenging, ferric-reducing (FRAP) and superoxide anion (SOA) scavenging activity. Anti-hyaluronidase activity was used as an indicator for the anti-aging and anti-inflammatory property, while anti-tyrosinase activity was evaluated to assess the anti-pigmentation or whitening property of these extracts. Our results showed that total polysaccharide content of P. ostreatus extracts was the highest (235.8–253.6 mg GE/g extract), while extracts from G. lucidum contained the lowest glucan (10.12–10.67%). Cold-water extract from S. commune exhibited substantial tyrosinase inhibition activity (98.15%) and SOA scavenging activity (94.82%). The greatest hyaluronidase activity was exhibited by G. lucidum hot-water extract, with the value of 72.78%. The findings from the correlation analyses suggest that the cosmeceutical properties of these mushrooms can be attributed mainly to the combination of different types of compound such as polysaccharides and phenolics. Overall, cold-water extract of S. commune and hot-water extract of G. lucidum showed the best results and may be further investigated.

Structural investigation of water-hyacinth (Eichhornia crassipes) polysaccharides. Part I. Water-soluble polysaccharides

1988 ◽  
Vol 66 (11) ◽  
pp. 2777-2781 ◽  
Author(s):  
Mohamady A. Issa
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Structural Investigation ◽  
Main Chain ◽  
Cold Water ◽  
Water Extract ◽  
Water Soluble ◽  
Hot Water ◽  
Side Chains ◽  
Hot Water Extract

A galactomannan and a branched (1 → 3)-β-D-glucan were isolated from the water hyacinth plant. The galactomannan, purified from the cold water extract, is composed of D-galactose and D-mannose in a ratio of 1.0:2.8. It has a (1 → 4)-linked D-mannose backbone, one out of three D-mannose residues being substituted with a single α-D-galactosyl unit. The branched (1 → 3)-β-D-glucan isolated from the hot water extract has a main chain composed of β-(1 → 3)-linked D-glucopyranosyl residues, and two single β(1 → 6)-D-glucopyranosyl groups attached as side chains to, on average, every 5 sugar units of the main chain. In addition, the branching of the β-glucan occurs regularly at O-6 of the β-(1 → 3)-linked backbone.

scholarly journals Comparative Efficacy of Aloe vera (Linn) and Aloe schweinfurthii (Baker) Powdered Leaf Extracts in the Control of Some Plant Fungal Pathogens

2019 ◽  
pp. 1-9
Author(s):  
A. O. Alejo ◽  
A. M. Ajayi ◽  
B. O. Akinyele
Keyword(s):  
Fungal Pathogens ◽  
Plant Pathogens ◽  
Cold Water ◽  
Aloe Vera ◽  
Water Extract ◽  
Antimicrobial Activities ◽  
Hot Water ◽  
Colletotrichum Lindemuthianum ◽  
Leaf Extracts ◽  
Hot Water Extract

Evaluation of the relative efficacy of powdered leaf extracts of Aloe vera (Linn) and Aloe schweinfurthii (Baker) in the control of some plant pathogens was undertaken in this work. Antimicrobial activities of the extracts obtained using cold water, hot water and ethanol were tested against four fungal spp., namely, Alternaria solani, Colletotrichum lindemuthianum, Sclerotium rolfsii and Trichophyton rubrum. The phytochemical screening of the leaf extracts of the two aloe species revealed the presence of bioactive compounds such as alkaloids, tannins, saponins, flavonoids, cardiac glycosides, phytates and oxalates. The extracts were observed to exhibit varying inhibitory effects on the selected fungi. Ethanolic extract of A. vera at 50 mg/ml and 100 mg/ml had the greatest impact on A. solani and C. lindemuthianum respectively. Similarly, cold water extract of A. schweinfurthii at 100 mg/ml was the most effective against S. rolfsii and T. rubrum. However, hot water extract of A. vera was least effective against C. lindemuthianum. Also, the efficacy of cold water extract of A. schweinfurthii at 50 mg/ml was very low against T. rubrum and A. solani. The hot water extract of A. schweinfurthii at 20 mg/ml also showed the least effect against S. rolfsii. Consequently, extracts from both Aloe species can be recommended in the management of the four fungal pathogens evaluated in this study. It is hoped that in no distant future, botanical fungicides would be developed from the two Aloe species.

scholarly journals Annona muricata: Comparative Assessment of the Antibacterial Activities of the Leaf and Stem Extracts against Multiple Antibiotic Resistant Clinical Isolates

2020 ◽  
pp. 12-21
Author(s):  
O. O. Agunloye ◽  
A. K. Onifade
Keyword(s):  
Antibacterial Effect ◽  
Cold Water ◽  
Water Extract ◽  
Antibacterial Activities ◽  
Hot Water ◽  
Annona Muricata ◽  
Antibiotic Resistant ◽  
Crude Extracts ◽  
Hot Water Extract ◽  
Zones Of Inhibition

This study was conducted to determine the antibacterial effect of crude extracts of Annona muricata, comparing the leaf and stem bark extracts using the same extraction solvents. The bacteria isolates were obtained from the hospital. The isolates obtained are Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus mirabilis and Streptococcus pyogene; they were confirmed using standard techniques. Multiple antibiotic-resistant was confirmed in the isolates after antibiotic susceptibility testing. Extracts were prepared from the leaf and stem of A. muricata using ethanol, chloroform, cold water and hot water. The antibacterial activities of the crude extracts were assayed using the agar well diffusion method. The phytochemical screening revealed the presence of saponins, Tannins and flavonoid especially in the ethanol extracts of both leaf and stem part of the plant. All the extract showed varying degrees of antibacterial activities. Chloroform and Hot water rated best for antibacterial activities in this study. A. muricata stem hot water extract has zones of inhibition that ranges from 16.003 ± 0.009 mm to 1.000± 0.006 mm. A. muricata leaf hot water extract has antibacterial effect with zones ranging from 14.500± 0.009 mm to 1.000± 0.006 mm across the isolates. Cold water extracts recorded the lowest zones of inhibition from this study for the stem and Bark antibacterial activities. The stem of A. muricata has higher inhibitory effect on the test isolates compared to the leaf of      A. muricata.

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