There is a constant search for biomaterials from natural products like plants for food and industrial applications.The work embodied in this report aimed at investigating the effects of microwave-assisted and soxhlet ...There is a constant search for biomaterials from natural products like plants for food and industrial applications.The work embodied in this report aimed at investigating the effects of microwave-assisted and soxhlet extraction(MAE and SE) techniques on the functional physicochemical quality characteristics of Moringa oleifera seed oil and proteins extracts. M. oleifera seeds were ground to fine powders and oil was extracted by microwave-assisted and soxhlet extraction techniques using petroleum ether. Quality attributes including yield percent, moisture content,iodine, saponification, specific gravity, viscosity, p H, thiobarbituric acid, acid and peroxide values were measured. Mineral and vitamin contents, chemical/functional groups, fatty acid(FA) composition, and reducing power of the oil were evaluated. Metabolomics of protein extracted from the defatted powders were analyzed by nuclear magnetic resonance(NMR). M. oleifera oil from MAE and SE methods had good yield(34.25 ± 0.0%,28.75 ± 0.0%), low moisture content(0.008 ± 0.0%, 0.011 ± 0.0%), non-drying and unsaturated, moderately saponified, less dense(0.91 ± 0.01, 0.92 ± 0.02 g m L^(-1)), had Newtonian flow, were weakly acidic, showed good content of FAs, recorded strong potential for long shelf-life, showed stability against oxidative rancidity and enzymatic hydrolysis, had very rich deposits of micro-and macro-nutrients as well as water-soluble and lipidsoluble vitamins, and functional groups in the oil were reflective of its content of long-and medium-chain triglycerides(LCT and MCT). Monounsaturated and saturated fatty acids(MUFA and SFA) were detected and the oil has excellent ferric ion reducing power. NMR metabolomic assay revealed the presence of nine essential amino acids(EAAs) in the protein extract. MAE technique is a feasible and acceptable alternative for high throughput extraction of M. oleifera oil with high yield and excellent quality attributes. The study revealed that MAE did not impart any remarkable advantage(s) on the physicochemical properties of M. oleifera seed oil and protein compared to SE technique.展开更多
Objective: To analyze the phytochemical constituents, and to explore potential protective effect of the methanol extract of Moringa oleifera(M. oleifera) seeds and Egyptian propolis, each alone or concurrently adminis...Objective: To analyze the phytochemical constituents, and to explore potential protective effect of the methanol extract of Moringa oleifera(M. oleifera) seeds and Egyptian propolis, each alone or concurrently administered on acetic acid-induced ulcerative colitis in rats. Methods: Eight groups of 5 rats each were used: normal control group with distilled water, model group, two groups with M. oleifera seeds(100 and 200 mg/kg), two groups with propolis(50 and 100 mg/kg), one group with concurrent administration of both, and one group with prednisolone(reference drug). Macro-and microscopic picture, ulcer index and lesion scores, oxidative markers, inflammatory mediators, in vitro activity of the inflammatory enzymes and 1, 1-diphenyl-2-picrylhydrazyl free radicals scavenging activity were evaluated. The phytochemical constituents of both extracts were explored by GC-MS analysis. Results: Both treatments modulated the macro-and microscopic picture, decreased the ulcerative index, lesion score, oxidative markers and inflammatory mediators, and inhibited the COX-1 and COX-2 enzymes. Propolis appeared to be powerful free radicals scavenger. A powerful synergistic effect of both treatments in modulating the course of the disease was reported. GCMS analysis of methanol extract of M. oleifera seeds and propolis revealed the presence of 50 and 34 compounds, respectively. Conclusions: M. oleifera seeds and propolis methanol extracts have modulated the course of acetic acid-induced ulcerative colitis. Moreover, both treatments induce a good synergistic effect against the disease. Isolation of the active constituents is recommended.展开更多
Objective: To elucidate the molecular mechanisms of the potent anti-obesity effect of Moringa oleifera Lam.(M. oleifera) ethanolic extract and to clarify the link between these mechanisms and the associated metabolic ...Objective: To elucidate the molecular mechanisms of the potent anti-obesity effect of Moringa oleifera Lam.(M. oleifera) ethanolic extract and to clarify the link between these mechanisms and the associated metabolic and vascular risks in the experimental model of visceral obesity.Methods: M. oleifera ethanolic extract was orally administered at 600 mg/kg body weight in obese female rats daily for 12 weeks. At the end of treatment, body weight was determined, and the atherogenic index, coronary artery index, glucose level, insulin resistance status, liver and kidney functions were assessed. Also, the m RNA of leptin, adiponectin and resistin in visceral adipose tissue was determined by quantitative real time-PCR.Results: The results showed that M. oleifera extract down-regulated m RNA expression of leptin and resistin, while it up-regulated adiponectin gene expression in obese rats relative to untreated obese control counterparts. This amelioration of genes expression was paralleled by a reduction in body weight and improvement of the atherogenic index and coronary artery index, as well as glucose level and insulin resistance value without adverse effects on liver or kidney functions, versus the untreated obese control ones.Conclusions: It is reasonable to assume that the anti-obesity, anti-atherogenic and antidiabetic properties of M. oleifera are mechanistically achieved via working directly on the adipokines of the visceral adipose tissue. Therefore, M. oleifera may be a good therapeutic candidate for the symptoms of metabolic syndrome.展开更多
Due to its unique economic value,Moringa oleifera Lam. has become a tree species with great development potential. This paper firstly introduced the value of development and utilization of M. oleifera in nutrition,med...Due to its unique economic value,Moringa oleifera Lam. has become a tree species with great development potential. This paper firstly introduced the value of development and utilization of M. oleifera in nutrition,medicinal,industrial,greening,etc. Then,focusing on the current development status of M. oleifera industry in Guangxi and combining Guangxi's resource conditions,it came up with recommendations for the comprehensive development and rational utilization of M. oleifera. Besides,it made a prediction of the prospect of Se-enriched M.oleifera industry in Guangxi.展开更多
Carbon tetrachloride(CCl4)is a hepatotoxin that triggers liver damage.This study aimed to evaluate the protective effect of phytochemicals detected in Moringa oleifera Lam.leaf extract(MOLE)on CCl4-induced hepatotoxic...Carbon tetrachloride(CCl4)is a hepatotoxin that triggers liver damage.This study aimed to evaluate the protective effect of phytochemicals detected in Moringa oleifera Lam.leaf extract(MOLE)on CCl4-induced hepatotoxicity in mice.Phytochemicals,total phenolics,and total fl avonoids were detected in MOLE.MOLE markedly decreased the elevation of serum alanine aminotransferase(ALT)and aspartate aminotransferase(AST)in consistence with the ameliorating effect on CCl4-induced histopathological abnormalities.Moreover,MOLE significantly alleviated the decrease in the antioxidant defense mechanism induced by CCl4.The suppressing effect of MOLE on the boosted inflammatory pathway triggered by CCl4 was detected by measuring the protein levels of nuclear factor kappa-light-chain-enhancer of activated B-cells(NF-κB-p65),toll-like receptor 4(TLR4),tumor necrosis factor-α(TNF-α),interleukin(IL)-6,IL-1β,and IL-8 as well as the relative expressions of nuclear factor kappa B(NF-κB),TNF-α,IL-1β,and TLR4 genes.Apoptosis and genotoxicity induced by CCl4 were signifi cantly alleviated by MOLE.MOLE co-administration modulated TLR4/NF-κB pathway as presented by the suppressed gene expression of TLR4 and NF-κB as well as by the reduced protein expression of TLR4 and NF-κB-p65.In conclusion,MOLE has a multifarious protective role against hepatotoxicity through control of oxidative stress and modulation of TLR4/NF-κB.展开更多
Water purification with Moringa oleifera seeds has received a lot of attention because it reduces water turbidity and pathogenic microorganisms. However, it is important to define the optimum conditions of storage to ...Water purification with Moringa oleifera seeds has received a lot of attention because it reduces water turbidity and pathogenic microorganisms. However, it is important to define the optimum conditions of storage to preserve the treated water quality. The study aims to investigate microbial quality of water treated with Moringa oleifera seeds or cake coagulants in relation to the storage temperature and shelf life in order to define the optimum conditions of storage. A total of 45 water samples from 3 water reservoirs of Loumbila, Ziga and Ouaga 3 dams were collected in sterile glass bottles and treated in triplicate with Moringa oleifera seeds or defatted cakes coagulants. Treated water samples obtained at optimum conditions were stored at room temperature (25°C - 30°C) and at 4°C. Fecal bacteria pollution indicators (Escherichia coli, fecal coliforms and fecal streptococcus) and parasites were monitored every 24 hours during three (3) days based on laboratory standard methods. Data were analyzed using the Student’s t-test and XLSTAT 7.5.2 statistical software. From the results obtained, bacterial indicators increased significantly with storage temperature (p and shelf life (p . However, for all water samples, bacterial growth was more important in samples treated with Moringa oleifera cakes than seeds (p . For water samples treated with Moringa oleifera seeds and stored at room temperature, bacterial increase after 72 hours was 57 - 80, 42 - 50 and 22 - 47 CFU/100 ml for fecal coliforms, E. coli and fecal streptococcus, respectively. With Moringa oleifera cake’s treatment, the increase was 63 - 104, 57 - 82 and 28 - 52 for the same indicators, respectively. Bacterial growth was also more important at room temperature than at 4°C. Thus, microbiological quality of water treated with Moringa oleifera seeds was better than cakes whatever storage temperature and shelf life. Overall, water treated with Moringa oleifera seeds should be stored at low temperature and consumed within 24 hours.展开更多
Safe drinking water access for rural populations in developing countries remains a challenge for a sustainable development, particularly in rural and periurban areas of Burkina Faso. The study aims to investigate the ...Safe drinking water access for rural populations in developing countries remains a challenge for a sustainable development, particularly in rural and periurban areas of Burkina Faso. The study aims to investigate the purifying capacity of Moringa oleifera defatted cake as compared to Moringa oleifera seed in the treatment of surface and well waters used for populations alimentation. A total of 90 water samples were collected in sterile glass bottles from 3 dams’ water reservoirs, a river, and a large diameter well, respectively. The water samples were treated in triplicate with Moringa oleifera seed and defatted cake coagulants. At different settling time and coagulant concentration, turbidity and pH were measured to determine the optimal conditions and factors influencing treatment with regard to sampling source. Nine physicochemical parameters (turbidity, pH, nitrates, nitrites, calcium, magnesium, total hardness, organic matter and sulfates), three bacterial fecal pollution indicators (Escherichia coli, fecal Coliforms and fecal Streptococcus) and parasite cysts were monitored based on laboratory standard methods. Data were analyzed using the Student’s t test and XLSTAT 7.5.2 statistical software. From the results obtained, for the same concentration of coagulant, settling time providing the lowest turbidity was significantly shorter (p Moringa oleifera cake than seed. Optimum settling time with Moringa oleifera cake was between 15 - 60 min versus 60 - 120 min, with Moringa oleifera seed. Both treatments significantly reduced minerals concentration in water excepted sulfates for which the concentration reversely increased. However, only Moringa oleifera cake treatment reduced organic matter content in all the water samples, while it increased with Moringa oleifera seed one (p < 0.0001). The reduction of microbial pollution indicators was 92% - 100% with M. oleifera cake treatment and 84% - 100% with M. oleifera seed one. Overall, for all water samples, Moringa oleifera cake treatment appeared more efficient in improving drinking water quality than the M. oleifera seed treatment.展开更多
Batches experiments were carried out to study the removal potentials of Moringa oleifera seed presscake( MOSP),the residual solids of Moringa oleifera seed after oil extraction used as a natural coagulant for the remo...Batches experiments were carried out to study the removal potentials of Moringa oleifera seed presscake( MOSP),the residual solids of Moringa oleifera seed after oil extraction used as a natural coagulant for the removal of two direct azo dyes including Direct Red-31( DR-31) and Direct Yellow-12( DY-12). The results indicated that the MOSP contained active proteins which were active agents and efficient for the removal of the two dyes. Higher temperature and lower p H were favorable for dye removal. The removal rates of the two dyes increased with the increasing MOSP dosage. Inorganic salts improved the dye removal efficiencies by the salt-in effect that prompted the release of proteins from the MOSP particles. Suspended solid simulated by kaolin decreased the dye removal efficiencies because of the competition for active sites of the MOSP between the kaolin particles and the dye molecules. The most likely mechanism for the removal of the two dyes by using MOSP as coagulant was a combined effect of adsorption and neutralisation of charges and the nucleation of the MOSP particles. The results provide new insight into the MOSP utilization and development of new coagulant for dye removal.展开更多
The evaluation of the effect of using moringa oleifera seed powder(MOSP)to partially replace cement by wt.%has been carried out.A mix parameter of 1:1.7:2.5,with designed strength of 20 kN-m^(2),and a cement content o...The evaluation of the effect of using moringa oleifera seed powder(MOSP)to partially replace cement by wt.%has been carried out.A mix parameter of 1:1.7:2.5,with designed strength of 20 kN-m^(2),and a cement content of 420 kg-m3,water-cementitious ratio of 0.5,to produce concrete specimens to which percentages of MOSP by wt.%of cement were added and cured for 90 days.Basic characteristics of the MOSP material were determined(Consistency and Setting times),and the concrete parameters workability,density,water absorption and compressive strength were also determined.The analysis of the experimental data collected on MOSP and MOSP-concrete confirmed that MOSP is substantially silicate(Quartz and Cristobalite).These have greatly to a large extent imparted on the quality of MOSP-concrete produced good quality concrete.The optimum replacement was at 0.2%wt.%of cement.展开更多
Objective:To investigate the acute and delayed anti-inflammatory effects of Morning oleifera lam(MOL) crude methanolic extract.Methods:Compared the anti-inflammatory effects of MOL with that of standard anti-inflamm...Objective:To investigate the acute and delayed anti-inflammatory effects of Morning oleifera lam(MOL) crude methanolic extract.Methods:Compared the anti-inflammatory effects of MOL with that of standard anti-inflammatory agents like indomethacin and hydrocortisone using Air Pouch Model.Results:In both acute and delayed inflammation,the MOL extract produced dose dependent anti-inflammatory effect[acute IC<sub>50</sub>=(399.30±5.43) mg/kg;delayed IC<sub>50</sub>=(510.26±4.53) mg/kg].The order of anti-inflammatory potency for the three drugs was hydrocortisone】 indomethacin 】 MOL.Conclusions:These observations indicate that MOL possesses potential anti-inflammatory property.展开更多
Precious metals are highly demanded economic value metals that require to be recovered from industrial wastes and electronic used products (e-waste). They are such as gold (Au) as well as Platinum Group Metals (PGMs) ...Precious metals are highly demanded economic value metals that require to be recovered from industrial wastes and electronic used products (e-waste). They are such as gold (Au) as well as Platinum Group Metals (PGMs) for instance palladium (Pd) and platinum (Pt). The study was conducted to test the magnetic iron oxide nanoparticles modified with Moringa oleifera seed proteins as adsorbent for recovery of Au(III), Pd(II) and Pt(IV) from aqueous solutions. Different functional groups responsible for adsorption, morphology, thermal stability, and surface charges of the nanoparticles were characterized with FTIR, SEM, TGA and Zeta potential respectively. Batch adsorption method was used, and precious metal ions percentage recovery was measured using ICP-OES. The effects of pH, initial adsorbate concentration, adsorption agitation time and adsorbent dosage were studied at room temperature of 25°C. Au(III) yielded a maximal recovery of 99.8%, followed by Pt(IV) with 87.7%, then Pd(II) with 72.7% at a pH 2.5, 10 mg/L initial adsorbate concentration, 120 minutes agitation time and 0.065 g adsorbent dosage. These results suggested that modified iron oxide nanoparticles were effective in selective recovery of the precious metal ions.展开更多
基金funded by International Foundation for Science(IFS)and Organisation for the Prohibition of Chemical Weapons(OPCW)research grant awarded to Dr.Chukwuebuka Emmanuel Umeyor in 2019(Grant number:I-2-F-6448-1).
文摘There is a constant search for biomaterials from natural products like plants for food and industrial applications.The work embodied in this report aimed at investigating the effects of microwave-assisted and soxhlet extraction(MAE and SE) techniques on the functional physicochemical quality characteristics of Moringa oleifera seed oil and proteins extracts. M. oleifera seeds were ground to fine powders and oil was extracted by microwave-assisted and soxhlet extraction techniques using petroleum ether. Quality attributes including yield percent, moisture content,iodine, saponification, specific gravity, viscosity, p H, thiobarbituric acid, acid and peroxide values were measured. Mineral and vitamin contents, chemical/functional groups, fatty acid(FA) composition, and reducing power of the oil were evaluated. Metabolomics of protein extracted from the defatted powders were analyzed by nuclear magnetic resonance(NMR). M. oleifera oil from MAE and SE methods had good yield(34.25 ± 0.0%,28.75 ± 0.0%), low moisture content(0.008 ± 0.0%, 0.011 ± 0.0%), non-drying and unsaturated, moderately saponified, less dense(0.91 ± 0.01, 0.92 ± 0.02 g m L^(-1)), had Newtonian flow, were weakly acidic, showed good content of FAs, recorded strong potential for long shelf-life, showed stability against oxidative rancidity and enzymatic hydrolysis, had very rich deposits of micro-and macro-nutrients as well as water-soluble and lipidsoluble vitamins, and functional groups in the oil were reflective of its content of long-and medium-chain triglycerides(LCT and MCT). Monounsaturated and saturated fatty acids(MUFA and SFA) were detected and the oil has excellent ferric ion reducing power. NMR metabolomic assay revealed the presence of nine essential amino acids(EAAs) in the protein extract. MAE technique is a feasible and acceptable alternative for high throughput extraction of M. oleifera oil with high yield and excellent quality attributes. The study revealed that MAE did not impart any remarkable advantage(s) on the physicochemical properties of M. oleifera seed oil and protein compared to SE technique.
文摘Objective: To analyze the phytochemical constituents, and to explore potential protective effect of the methanol extract of Moringa oleifera(M. oleifera) seeds and Egyptian propolis, each alone or concurrently administered on acetic acid-induced ulcerative colitis in rats. Methods: Eight groups of 5 rats each were used: normal control group with distilled water, model group, two groups with M. oleifera seeds(100 and 200 mg/kg), two groups with propolis(50 and 100 mg/kg), one group with concurrent administration of both, and one group with prednisolone(reference drug). Macro-and microscopic picture, ulcer index and lesion scores, oxidative markers, inflammatory mediators, in vitro activity of the inflammatory enzymes and 1, 1-diphenyl-2-picrylhydrazyl free radicals scavenging activity were evaluated. The phytochemical constituents of both extracts were explored by GC-MS analysis. Results: Both treatments modulated the macro-and microscopic picture, decreased the ulcerative index, lesion score, oxidative markers and inflammatory mediators, and inhibited the COX-1 and COX-2 enzymes. Propolis appeared to be powerful free radicals scavenger. A powerful synergistic effect of both treatments in modulating the course of the disease was reported. GCMS analysis of methanol extract of M. oleifera seeds and propolis revealed the presence of 50 and 34 compounds, respectively. Conclusions: M. oleifera seeds and propolis methanol extracts have modulated the course of acetic acid-induced ulcerative colitis. Moreover, both treatments induce a good synergistic effect against the disease. Isolation of the active constituents is recommended.
基金Supported by Science & Technology Development Fund in Egypt project entitled “Recent approaches in the utilization of M.oleifera and Moringa peregrina as a good nutritional,medicinal and industrial plant in Egypt”(Grant No.5979)
文摘Objective: To elucidate the molecular mechanisms of the potent anti-obesity effect of Moringa oleifera Lam.(M. oleifera) ethanolic extract and to clarify the link between these mechanisms and the associated metabolic and vascular risks in the experimental model of visceral obesity.Methods: M. oleifera ethanolic extract was orally administered at 600 mg/kg body weight in obese female rats daily for 12 weeks. At the end of treatment, body weight was determined, and the atherogenic index, coronary artery index, glucose level, insulin resistance status, liver and kidney functions were assessed. Also, the m RNA of leptin, adiponectin and resistin in visceral adipose tissue was determined by quantitative real time-PCR.Results: The results showed that M. oleifera extract down-regulated m RNA expression of leptin and resistin, while it up-regulated adiponectin gene expression in obese rats relative to untreated obese control counterparts. This amelioration of genes expression was paralleled by a reduction in body weight and improvement of the atherogenic index and coronary artery index, as well as glucose level and insulin resistance value without adverse effects on liver or kidney functions, versus the untreated obese control ones.Conclusions: It is reasonable to assume that the anti-obesity, anti-atherogenic and antidiabetic properties of M. oleifera are mechanistically achieved via working directly on the adipokines of the visceral adipose tissue. Therefore, M. oleifera may be a good therapeutic candidate for the symptoms of metabolic syndrome.
基金Supported by Scientific Research and Technological Development Program of Xixiangtang District of Nanning City(201710304)Key Research and Development Program of Guangxi(Gui Ke AB16380088)+5 种基金Guangxi Se-enriched Crop Experiment Station(Gui TS2016011)Key Research and Development Program of Qingxiu District of Nanning City(2016039)Scientific Development Fund Project of Guangxi Academy of Agricultural Sciences(2017JM01,2017JM03,2015JM23)Technological Achievement Transformation Project of Guangxi Academy of Agricultural Sciences(2017NZ04)Key Science and Technology Project of Guangxi(Gui Ke AA17202026-2)Special Fund Project for Innovation Driven Development of Guangxi(Gui Ke AA17202019,Gui Ke AA17202019-4,and Gui Ke AA17202019-1)
文摘Due to its unique economic value,Moringa oleifera Lam. has become a tree species with great development potential. This paper firstly introduced the value of development and utilization of M. oleifera in nutrition,medicinal,industrial,greening,etc. Then,focusing on the current development status of M. oleifera industry in Guangxi and combining Guangxi's resource conditions,it came up with recommendations for the comprehensive development and rational utilization of M. oleifera. Besides,it made a prediction of the prospect of Se-enriched M.oleifera industry in Guangxi.
文摘Carbon tetrachloride(CCl4)is a hepatotoxin that triggers liver damage.This study aimed to evaluate the protective effect of phytochemicals detected in Moringa oleifera Lam.leaf extract(MOLE)on CCl4-induced hepatotoxicity in mice.Phytochemicals,total phenolics,and total fl avonoids were detected in MOLE.MOLE markedly decreased the elevation of serum alanine aminotransferase(ALT)and aspartate aminotransferase(AST)in consistence with the ameliorating effect on CCl4-induced histopathological abnormalities.Moreover,MOLE significantly alleviated the decrease in the antioxidant defense mechanism induced by CCl4.The suppressing effect of MOLE on the boosted inflammatory pathway triggered by CCl4 was detected by measuring the protein levels of nuclear factor kappa-light-chain-enhancer of activated B-cells(NF-κB-p65),toll-like receptor 4(TLR4),tumor necrosis factor-α(TNF-α),interleukin(IL)-6,IL-1β,and IL-8 as well as the relative expressions of nuclear factor kappa B(NF-κB),TNF-α,IL-1β,and TLR4 genes.Apoptosis and genotoxicity induced by CCl4 were signifi cantly alleviated by MOLE.MOLE co-administration modulated TLR4/NF-κB pathway as presented by the suppressed gene expression of TLR4 and NF-κB as well as by the reduced protein expression of TLR4 and NF-κB-p65.In conclusion,MOLE has a multifarious protective role against hepatotoxicity through control of oxidative stress and modulation of TLR4/NF-κB.
文摘Water purification with Moringa oleifera seeds has received a lot of attention because it reduces water turbidity and pathogenic microorganisms. However, it is important to define the optimum conditions of storage to preserve the treated water quality. The study aims to investigate microbial quality of water treated with Moringa oleifera seeds or cake coagulants in relation to the storage temperature and shelf life in order to define the optimum conditions of storage. A total of 45 water samples from 3 water reservoirs of Loumbila, Ziga and Ouaga 3 dams were collected in sterile glass bottles and treated in triplicate with Moringa oleifera seeds or defatted cakes coagulants. Treated water samples obtained at optimum conditions were stored at room temperature (25°C - 30°C) and at 4°C. Fecal bacteria pollution indicators (Escherichia coli, fecal coliforms and fecal streptococcus) and parasites were monitored every 24 hours during three (3) days based on laboratory standard methods. Data were analyzed using the Student’s t-test and XLSTAT 7.5.2 statistical software. From the results obtained, bacterial indicators increased significantly with storage temperature (p and shelf life (p . However, for all water samples, bacterial growth was more important in samples treated with Moringa oleifera cakes than seeds (p . For water samples treated with Moringa oleifera seeds and stored at room temperature, bacterial increase after 72 hours was 57 - 80, 42 - 50 and 22 - 47 CFU/100 ml for fecal coliforms, E. coli and fecal streptococcus, respectively. With Moringa oleifera cake’s treatment, the increase was 63 - 104, 57 - 82 and 28 - 52 for the same indicators, respectively. Bacterial growth was also more important at room temperature than at 4°C. Thus, microbiological quality of water treated with Moringa oleifera seeds was better than cakes whatever storage temperature and shelf life. Overall, water treated with Moringa oleifera seeds should be stored at low temperature and consumed within 24 hours.
文摘Safe drinking water access for rural populations in developing countries remains a challenge for a sustainable development, particularly in rural and periurban areas of Burkina Faso. The study aims to investigate the purifying capacity of Moringa oleifera defatted cake as compared to Moringa oleifera seed in the treatment of surface and well waters used for populations alimentation. A total of 90 water samples were collected in sterile glass bottles from 3 dams’ water reservoirs, a river, and a large diameter well, respectively. The water samples were treated in triplicate with Moringa oleifera seed and defatted cake coagulants. At different settling time and coagulant concentration, turbidity and pH were measured to determine the optimal conditions and factors influencing treatment with regard to sampling source. Nine physicochemical parameters (turbidity, pH, nitrates, nitrites, calcium, magnesium, total hardness, organic matter and sulfates), three bacterial fecal pollution indicators (Escherichia coli, fecal Coliforms and fecal Streptococcus) and parasite cysts were monitored based on laboratory standard methods. Data were analyzed using the Student’s t test and XLSTAT 7.5.2 statistical software. From the results obtained, for the same concentration of coagulant, settling time providing the lowest turbidity was significantly shorter (p Moringa oleifera cake than seed. Optimum settling time with Moringa oleifera cake was between 15 - 60 min versus 60 - 120 min, with Moringa oleifera seed. Both treatments significantly reduced minerals concentration in water excepted sulfates for which the concentration reversely increased. However, only Moringa oleifera cake treatment reduced organic matter content in all the water samples, while it increased with Moringa oleifera seed one (p < 0.0001). The reduction of microbial pollution indicators was 92% - 100% with M. oleifera cake treatment and 84% - 100% with M. oleifera seed one. Overall, for all water samples, Moringa oleifera cake treatment appeared more efficient in improving drinking water quality than the M. oleifera seed treatment.
基金the Research and Demonstration of Key Technology of Pollution Control for Heavily Polluting Industries in the Upper and Middle Reaches of Shaying River,China(No.2009ZX07210-002)The Opening Fund of State Key Laboratory of Pollution Control&Resource Reuse of Nanjing University,China(No.PCRRF12016)
文摘Batches experiments were carried out to study the removal potentials of Moringa oleifera seed presscake( MOSP),the residual solids of Moringa oleifera seed after oil extraction used as a natural coagulant for the removal of two direct azo dyes including Direct Red-31( DR-31) and Direct Yellow-12( DY-12). The results indicated that the MOSP contained active proteins which were active agents and efficient for the removal of the two dyes. Higher temperature and lower p H were favorable for dye removal. The removal rates of the two dyes increased with the increasing MOSP dosage. Inorganic salts improved the dye removal efficiencies by the salt-in effect that prompted the release of proteins from the MOSP particles. Suspended solid simulated by kaolin decreased the dye removal efficiencies because of the competition for active sites of the MOSP between the kaolin particles and the dye molecules. The most likely mechanism for the removal of the two dyes by using MOSP as coagulant was a combined effect of adsorption and neutralisation of charges and the nucleation of the MOSP particles. The results provide new insight into the MOSP utilization and development of new coagulant for dye removal.
文摘The evaluation of the effect of using moringa oleifera seed powder(MOSP)to partially replace cement by wt.%has been carried out.A mix parameter of 1:1.7:2.5,with designed strength of 20 kN-m^(2),and a cement content of 420 kg-m3,water-cementitious ratio of 0.5,to produce concrete specimens to which percentages of MOSP by wt.%of cement were added and cured for 90 days.Basic characteristics of the MOSP material were determined(Consistency and Setting times),and the concrete parameters workability,density,water absorption and compressive strength were also determined.The analysis of the experimental data collected on MOSP and MOSP-concrete confirmed that MOSP is substantially silicate(Quartz and Cristobalite).These have greatly to a large extent imparted on the quality of MOSP-concrete produced good quality concrete.The optimum replacement was at 0.2%wt.%of cement.
文摘Objective:To investigate the acute and delayed anti-inflammatory effects of Morning oleifera lam(MOL) crude methanolic extract.Methods:Compared the anti-inflammatory effects of MOL with that of standard anti-inflammatory agents like indomethacin and hydrocortisone using Air Pouch Model.Results:In both acute and delayed inflammation,the MOL extract produced dose dependent anti-inflammatory effect[acute IC<sub>50</sub>=(399.30±5.43) mg/kg;delayed IC<sub>50</sub>=(510.26±4.53) mg/kg].The order of anti-inflammatory potency for the three drugs was hydrocortisone】 indomethacin 】 MOL.Conclusions:These observations indicate that MOL possesses potential anti-inflammatory property.
文摘Precious metals are highly demanded economic value metals that require to be recovered from industrial wastes and electronic used products (e-waste). They are such as gold (Au) as well as Platinum Group Metals (PGMs) for instance palladium (Pd) and platinum (Pt). The study was conducted to test the magnetic iron oxide nanoparticles modified with Moringa oleifera seed proteins as adsorbent for recovery of Au(III), Pd(II) and Pt(IV) from aqueous solutions. Different functional groups responsible for adsorption, morphology, thermal stability, and surface charges of the nanoparticles were characterized with FTIR, SEM, TGA and Zeta potential respectively. Batch adsorption method was used, and precious metal ions percentage recovery was measured using ICP-OES. The effects of pH, initial adsorbate concentration, adsorption agitation time and adsorbent dosage were studied at room temperature of 25°C. Au(III) yielded a maximal recovery of 99.8%, followed by Pt(IV) with 87.7%, then Pd(II) with 72.7% at a pH 2.5, 10 mg/L initial adsorbate concentration, 120 minutes agitation time and 0.065 g adsorbent dosage. These results suggested that modified iron oxide nanoparticles were effective in selective recovery of the precious metal ions.