Soil Parameters Affecting the Antioxidant Activity of Hypoxis hemerocallidea
Corm Extracts in Different Areas of South Africa

Hypoxis hemerocallidea is wild harvested and widely used due inter alia to its strong antioxidant activity. Antioxidant activity is linked to plant stressors like soil heavy metals concentrations and pH. If high antioxidant activity is caused by heavy metals stressing the plant, the plant may not be completely safe. Soils and H. hemerocallidea corms were collected from five different geographical regions of South Africa. The highest corm and soil heavy metals concentration were Fe, Mn and Cr, with Fe having the highest, particularly for corms collected from Ga-rankuwa (83.7 ± 0.03 μg/g). The soil and corm samples from Ga-rankuwa with high levels of metals (Fe, Cr, Ni, Pb) had greater antioxidant activity (EC50 of 1.68 ± 0.49 μg/mL). Despite corms showing ability to bio-accumulate heavy metals, the antioxidant activity could not be linked to environmental conditions. The results highlight potential danger of using naturally harvested bulbs growing in unidentified soils

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UJI IMUNOSTIMULATOR DARI KOMBINASI EKSTRAK ETANOL HERBA BINARA (ARTEMISIA VULGARIS LINN) DAN EKSTRAK ETANOL DAUN PUCUK MERAH (SYZYGIUM OLEANA) DENGAN METODE HIPERSENSITIVITAS TIPE LAMBAT PADA TIKUS JANTAN

Jurnal Penelitian Farmasi & Herbal ◽

10.36656/jpfh.v1i2.105 ◽

2019 ◽

Vol 1 (2) ◽

pp. 22-26

Author(s):

Romauli Anna Teresia Marbun ◽

Aminah Syarifuddin ◽

Montysory Silalahi ◽

Radika Bella Fista Ginting

Keyword(s):

Antioxidant Activity ◽

Immune System ◽

Secondary Metabolites ◽

Ethanol Extract ◽

Positive Control ◽

Artemisia Vulgaris ◽

Chemical Screening ◽

Chemical Content ◽

High Antioxidant Activity ◽

New Treatments

Diseases mediated by the immune system are difficult problems to treat such as human immunodeficiency virus (HIV) and other lethal viruses. Infections that occur in normal people are generally brief and rarely leave permanent damage. Treatment of this disease requires an aggressive and innovative approach to the development of new treatments so that it requires the role of immunomodulators to improve the immune system. A substance that acts as an enhancer or immune enhancer can be obtained by using herbs that are efficacious as immunostimulants. One of the herbs used is herbal binara (Artemisia vulgaris L) which has been studied as a potential immunomodulator with high antioxidant activity. Previous research also stated that red shoots (Syzygium oleana) were studied as potential immunomodulators with high antioxidant activity. Several other species such as Syzygium samarangense have 16 flavonoida compounds which show pharmacological immunological activity. The purpose of this study was to determine the content of secondary metabolites of ethanol extract of herbal binara (Artemisia vulgaris L.) with red shoots (Syzygium oleana) and to determine the best dose of extract from the ethanol extract of herbal binara (Artemisia vulgaris L.) with red shoots (Syzygium oleana) can reduce the volume of swelling of mouse feet. Examination of the chemical content of secondary metabolites from the ethanol extract of herbal binara (Artemisia vulgaris L.) with red shoots (Syzygium oleana) is carried out by chemical screening and characterization of simplicia and extract. The method used is the slow type hypersensitivity method. In this test the independent variable is the secondary metabolite of ethanol extract of herb binara (Artemisia vulgaris L.) with red shoots (Syzygium oleana) with four concentrations (50, 100, 200 and 400 mg / kgBB). The positive control used by Stimuno dose is 32.5 mg / kgBB

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Composition and Antioxidant Activity of Aqueous Extracts Obtained from Herb of Tansy (Tanacetum Vulgare L.)

Revista de Chimie ◽

10.37358/rc.18.5.6257 ◽

2018 ◽

Vol 69 (5) ◽

pp. 1041-1044

Author(s):

Claudia Anca Mot ◽

Andreea I. Lupitu ◽

Simona Bungau ◽

Ciprian Iovan ◽

Dana Maria Copolovici ◽

...

Keyword(s):

Antioxidant Activity ◽

Ascorbic Acid ◽

Veterinary Medicine ◽

Pharmaceutical Industry ◽

Phenolic Content ◽

Food Preservation ◽

Aqueous Extracts ◽

Tanacetum Vulgare ◽

High Antioxidant Activity ◽

Natural Additives

The aim of this study was to determine the phenolic content and antioxidant activity of extracts obtained from herb of Tanacetum vulgare L. (tansy) harvested in two different locations from the western part of Romania. Aqueous extracts of tansy presented high antioxidant activity that ranged between 295.77 and 653.65 mg GAE/L, and remarkable percentage of inhibition (31.82-65.05 %). The compounds quantified in the plant extracts that were determined by UHPLC are: ascorbic acid, riboflavin, pyrocatechol, rutin, quercetin, and kaempferol. Extracts obtained from tansy flowers showed higher content of phenols compared to that obtained from leaves. Similarly, the flower extracts present a high antioxidant activity that could suggest their use as natural additives in food preservation and also in pharmaceutical industry and veterinary medicine.

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Contamination features and health risk of soil heavy metals in China

The Science of The Total Environment ◽

10.1016/j.scitotenv.2015.01.025 ◽

2015 ◽

Vol 512-513 ◽

pp. 143-153 ◽

Cited By ~ 513

Author(s):

Haiyang Chen ◽

Yanguo Teng ◽

Sijin Lu ◽

Yeyao Wang ◽

Jinsheng Wang

Keyword(s):

Heavy Metals ◽

Health Risk ◽

Soil Heavy Metals

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Evaluation and risk assessment of heavy metals in surface water collected along the Isipingo River, KwaZulu-Natal, South Africa

International Journal of Environmental & Analytical Chemistry ◽

10.1080/03067319.2021.1947265 ◽

2021 ◽

pp. 1-17

Author(s):

Gbadebo Clement Adeyinka ◽

Babatunde Femi Bakare ◽

Samuel Ayodele Iwarere

Keyword(s):

Heavy Metals ◽

South Africa ◽

Risk Assessment ◽

Surface Water ◽

Kwazulu Natal

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Revalorization of chicken feather waste into a high antioxidant activity feather protein hydrolysate using a novel psychrotolerant bacterium

Biocatalysis and Agricultural Biotechnology ◽

10.1016/j.bcab.2021.101925 ◽

2021 ◽

Vol 32 ◽

pp. 101925

Author(s):

Brenda Bezus ◽

Florencia Ruscasso ◽

Gabriela Garmendia ◽

Silvana Vero ◽

Ivana Cavello ◽

...

Keyword(s):

Antioxidant Activity ◽

Protein Hydrolysate ◽

Chicken Feather ◽

Feather Waste ◽

Psychrotolerant Bacterium ◽

High Antioxidant Activity ◽

Chicken Feather Waste

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Process Optimization for Development of a Novel Water Kefir Drink with High Antioxidant Activity and Potential Probiotic Properties from Russian Olive Fruit (Elaeagnus angustifolia)

Food and Bioprocess Technology ◽

10.1007/s11947-020-02563-1 ◽

2021 ◽

Author(s):

Pariya Darvishzadeh ◽

Valérie Orsat ◽

José Luis Martinez

Keyword(s):

Antioxidant Activity ◽

Process Optimization ◽

Probiotic Properties ◽

Elaeagnus Angustifolia ◽

Russian Olive ◽

Olive Fruit ◽

High Antioxidant Activity ◽

Water Kefir

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Impact of Harvest Conditions and Host Tree Species on Chemical Composition and Antioxidant Activity of Extracts from Viscum album L.

Molecules ◽

10.3390/molecules26123741 ◽

2021 ◽

Vol 26 (12) ◽

pp. 3741

Author(s):

Wioleta Pietrzak ◽

Renata Nowak

Keyword(s):

Antioxidant Activity ◽

Biological Activity ◽

Chemical Composition ◽

Tree Species ◽

Plant Material ◽

Plant Secondary Metabolites ◽

Host Tree ◽

Host Tree Species ◽

High Antioxidant Activity ◽

Mistletoe Extracts

The content of plant secondary metabolites is not stable, and factors such as the region/location effect and seasonal variations have an impact on their chemical composition, especially in parasitic plants. Research in this area is an important step in the development of quality parameter standards of medicinal plants and their finished products. The effects of the time and place of harvest and the host tree species on the chemical composition and antioxidant activity of mistletoe extracts were investigated. Statistical tools were used to evaluate the results of the spectrophotometric and LC-ESI-MS/MS studies of the phenolic composition and antioxidant activity. The investigations indicate that the qualitative and quantitative composition, influencing the biological activity of mistletoe extracts, largely depends on the origin of the plant. The mistletoe extracts exhibited a rich phenol profile and high antioxidant activity. The chemometric analysis indicated that mistletoe collected from conifers (Viscum abietis and Viscum austriacum) had the most advantageous chemical composition and antioxidant activity. Moreover, the chemical profile and biological activity of the plant material were closely related to the climatic conditions and location of the harvested plant. Higher levels of phenolic compounds and high antioxidant activity were found in extracts obtained from plant material collected in cold weather with the presence of snow and less sunshine (autumn–winter period).

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Reforestation Impacted Soil Heavy Metal Fractionation and Related Risk Assessment in the Karst Area, Southwest China

Forests ◽

10.3390/f12070891 ◽

2021 ◽

Vol 12 (7) ◽

pp. 891

Author(s):

Qian Zhang ◽

Guilin Han ◽

Xingliang Xu

Keyword(s):

Heavy Metals ◽

Risk Assessment ◽

Ecological Risk ◽

Southwest China ◽

Risk Index ◽

Contamination Factor ◽

Karst Area ◽

Risk Assessment Code ◽

Bcr Sequential Extraction ◽

Soil Heavy Metals

Human agricultural activities have resulted in widespread land degradation and soil contamination in the karst areas. However, the effects of reforestation after agricultural abandonment on the mobility risks and contamination of heavy metals have been rarely reported. In the present study, six soil profiles were selected from cropland and abandoned cropland with reforestation in the Puding karst regions of Southwest China. The Community Bureau of Reference (BCR) sequential extraction method was used to evaluate the compositions of different chemical fractions of soil heavy metals, including Fe, Mn, Cr, Zn, Ni, and Cd. The total contents of Cr, Ni, Zn, Cd, and Mn in the croplands were significantly higher than those in the abandoned croplands. For all soils, Cr, Ni, Zn, and Fe were mainly concentrated in the residual fractions (>85%), whereas Mn and Cd were mostly observed in the non-residual fractions (>65%). The non-residual fractions of Cd, Cr, Ni, and Zn in the croplands were higher than those in the abandoned croplands. These results indicated that the content and mobility of soil heavy metals decreased after reforestation. The individual contamination factor (ICF) and risk assessment code (RAC) showed that Cd contributed to considerable contamination of karst soils. The global contamination factor (GCF) and potential ecological risk index (RI) suggested low contamination and ecological risk of the investigated heavy metals in the croplands, moreover they can be further reduced after reforestation.

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