Metal trace elements (MTE) are among the most harmful micropollutants of natural waters. Eliminating them helps improve the quality and safety of drinking water and protect human health. In this work, we used mango ke...Metal trace elements (MTE) are among the most harmful micropollutants of natural waters. Eliminating them helps improve the quality and safety of drinking water and protect human health. In this work, we used mango kernel powder (MKP) as bioadsorbent material for removal of Cr (VI) from water. Uv-visible spectroscopy was used to monitor and quantify Cr (VI) during processing using the Beer-Lambert formula. Some parameters such as pH, mango powder, mass and contact time were optimized to determine adsorption capacity and chromium removal rate. Adsorption kinetics, equilibrium, isotherms and thermodynamic parameters such as ΔG˚, ΔH˚, and ΔS˚, as well as FTIR were studied to better understand the Cr (VI) removal process by MKP. The adsorption capacity reached 94.87 mg/g, for an optimal contact time of 30 min at 298 K. The obtained results are in accordance with a pseudo-second order Freundlich adsorption isotherm model. Finally FTIR was used to monitor the evolution of absorption bands, while Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) were used to evaluate surface properties and morphology of the adsorbent.展开更多
This work was undertaken to explore the potential of fruit waste materials as sources of natural antioxidants. Kernels of four varieties of mangoes of Indian origin were studied. Kernels were extracted with five diffe...This work was undertaken to explore the potential of fruit waste materials as sources of natural antioxidants. Kernels of four varieties of mangoes of Indian origin were studied. Kernels were extracted with five different solvents, tested for extraction efficiency and total phenolic content （TPC）. As the methanol proved to be the best solvent, it was used for further analysis. The methanolic extracts of kernels had reducing power （RP） and scavenged 2, 2 diphenyl-l-picryl hydrazyl （DPPH） radical, which is related to their antioxidant activity （AA）. When analyzed in HPLC, the extracts showed the presence of phenolic compounds. The extracts had the higher capacity to reduce the formation of peroxides and slow down the rate of oxidation than butylated hydroxyl toluene （BHT） in refined, bleached deodorized soybean oil （RBD SBO）. Based on the results obtained mango kernels are potential source of natural antioxidants owing to their antioxidant activity.展开更多
Mango(Mangifera indica)is one of the most popular fruits in the world.During processing,the byproducts such as peel,seed and kernel are produced,which are high in bioactive components.There is a need to utilize them t...Mango(Mangifera indica)is one of the most popular fruits in the world.During processing,the byproducts such as peel,seed and kernel are produced,which are high in bioactive components.There is a need to utilize them to formulate food products or extract the functional components.This paper provides an overview about the nutritional composition of mango byproducts besides discussing the bioactive compounds(BACs).The manuscript also explores the existing evidences on the biological activity of BACs and the potential of mango peel and seed kernel to develop value-added foods and beverages.Mango kernel is a great source of macronutrients and micronutrients with a relatively high antioxidant and polyphenolic content,whereas mango peels are rich in protocatechuic acids,mangiferin andβ-carotene.These BACs demonstrate numerous biological activities including anti-oxidant antimicrobial,anti-diabetic,anti-cancer and anti-inflammatory properties.One of the promising strategies to utilize these byproducts is the development of different value-added food products such as bakery products,meat products,and dairy-based products for improving their phenolic compounds,fiber content,carotenoids,and antioxidant activity.This review thus illustrates the nutraceutical and pharmacological properties of mango byproducts and their appropriate use to enhance nutrition and health.展开更多
文摘Metal trace elements (MTE) are among the most harmful micropollutants of natural waters. Eliminating them helps improve the quality and safety of drinking water and protect human health. In this work, we used mango kernel powder (MKP) as bioadsorbent material for removal of Cr (VI) from water. Uv-visible spectroscopy was used to monitor and quantify Cr (VI) during processing using the Beer-Lambert formula. Some parameters such as pH, mango powder, mass and contact time were optimized to determine adsorption capacity and chromium removal rate. Adsorption kinetics, equilibrium, isotherms and thermodynamic parameters such as ΔG˚, ΔH˚, and ΔS˚, as well as FTIR were studied to better understand the Cr (VI) removal process by MKP. The adsorption capacity reached 94.87 mg/g, for an optimal contact time of 30 min at 298 K. The obtained results are in accordance with a pseudo-second order Freundlich adsorption isotherm model. Finally FTIR was used to monitor the evolution of absorption bands, while Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) were used to evaluate surface properties and morphology of the adsorbent.
文摘This work was undertaken to explore the potential of fruit waste materials as sources of natural antioxidants. Kernels of four varieties of mangoes of Indian origin were studied. Kernels were extracted with five different solvents, tested for extraction efficiency and total phenolic content （TPC）. As the methanol proved to be the best solvent, it was used for further analysis. The methanolic extracts of kernels had reducing power （RP） and scavenged 2, 2 diphenyl-l-picryl hydrazyl （DPPH） radical, which is related to their antioxidant activity （AA）. When analyzed in HPLC, the extracts showed the presence of phenolic compounds. The extracts had the higher capacity to reduce the formation of peroxides and slow down the rate of oxidation than butylated hydroxyl toluene （BHT） in refined, bleached deodorized soybean oil （RBD SBO）. Based on the results obtained mango kernels are potential source of natural antioxidants owing to their antioxidant activity.
文摘Mango(Mangifera indica)is one of the most popular fruits in the world.During processing,the byproducts such as peel,seed and kernel are produced,which are high in bioactive components.There is a need to utilize them to formulate food products or extract the functional components.This paper provides an overview about the nutritional composition of mango byproducts besides discussing the bioactive compounds(BACs).The manuscript also explores the existing evidences on the biological activity of BACs and the potential of mango peel and seed kernel to develop value-added foods and beverages.Mango kernel is a great source of macronutrients and micronutrients with a relatively high antioxidant and polyphenolic content,whereas mango peels are rich in protocatechuic acids,mangiferin andβ-carotene.These BACs demonstrate numerous biological activities including anti-oxidant antimicrobial,anti-diabetic,anti-cancer and anti-inflammatory properties.One of the promising strategies to utilize these byproducts is the development of different value-added food products such as bakery products,meat products,and dairy-based products for improving their phenolic compounds,fiber content,carotenoids,and antioxidant activity.This review thus illustrates the nutraceutical and pharmacological properties of mango byproducts and their appropriate use to enhance nutrition and health.
