AIM： To investigate the active chloroform fraction of the ethanol extract oflpomoea carnea flowers on hematological changes in toluene diisocyanate-induced inflammation in Wistar rats. METHOD： Except for the control...AIM： To investigate the active chloroform fraction of the ethanol extract oflpomoea carnea flowers on hematological changes in toluene diisocyanate-induced inflammation in Wistar rats. METHOD： Except for the control group, all of the rats were sensitized with intranasal application of 5 μL of 10% toluene diiso- cyanate （TDI） for 7 days. One week after second sensitization, all of the rats were provoked with 5 ~tL of 5% TDI to induce airway hypersensitivity. After the last challenge, blood and bronchoalvelor lavage （BAL） fluid were collected and subjected to total and differential leucocytes count. Flash chromatography was performed on the most active chloroform fraction to isolate an individual component. RESULTS： Treatment with the ethanolic extract and its chloroform fraction at an oral dose of 200 mg·kg^ -1 showed a significant decrease in circulating neutrophil and eosinophil in blood and BAL as compared with standard dexamethasone （DEXA）. The structure of the compound obtained from chloroform fraction oflpomea carnea was elucidated as stigmast-5, 22-dien-3β-ol on the basis of spectral data analysis. CONCLUSION： The chloroform fraction was found to be more effective to suppress airway hyper reactivity symptoms, and de- creased count of both total and differential inflammatory cells.展开更多
Objective:To analyze the hematological effects of administering Ipomoea batatas(I.batatas)and Phyllanthus niruri(P.niruri) in the ICR mice.Methods:Powdered leaves of /.batatas and P.nintri were fed to mice for 4 weeks...Objective:To analyze the hematological effects of administering Ipomoea batatas(I.batatas)and Phyllanthus niruri(P.niruri) in the ICR mice.Methods:Powdered leaves of /.batatas and P.nintri were fed to mice for 4 weeks.A total of six groups were used to determine the effect of the plants to the complete blood count of the mouse.Group A(blank control) mice were feed with pellets only;Group B(negative control) mice were fed with pellets coated with honey;Group C(low dosage) mice were fed with honey-coated pellets and powdered leaves of 1.batatas at 10 g/kg body weight of the mouse;Group D(high dosage) mice were fed with honey-coated pellets and powdered leaves of I,batatas at 20 g/kg body weight of the mouse;Group E(low dosage) mice were fed with honey-coated pellets and powdered leaves of P.niruri at 10 g/kg body weight of the mouse:and Group F(high dosage) mice were fed with honey-coated pellets and powdered leaves of P.niruri at 20 g/kg body weight of the mouse.Complete blood count was performed on Days 0.14 and 28.Results:It was shown that I.batatas can increase the values of hematocrit and hemoglobin on both the low dose and high dose at Day 28 and red blood cells(RBC) on both Days 14 and28 of testing.On the other hand.P.niruri can increase RBC.hematocrit and hemoglobin on Day 28 with only the low dose.There were no significant differences with white blood cell,absolute granulocyte,lymphocyte and monocyte,and platelet counts observed for both plant samples.Conclusions:I.batatas and P.niruri have effects on the hematocrit,RBC and hemoglobin levels in mice.展开更多
The work carried out here opens another perspective in the valorization of sw<span>eet potatoes produced in Congo Brazzaville other than those proposed by <b><i>BOULA</i></b> <b><...The work carried out here opens another perspective in the valorization of sw<span>eet potatoes produced in Congo Brazzaville other than those proposed by <b><i>BOULA</i></b> <b><i>and</i></b><span> <b><i>all</i></b></span>. We have shown in this work that the hydrophilic property of starch which limits the production of starch-based bioplastics can be inhibited by using the effects of photonic incandescence. Indeed, light significantly impacts the bioplastic matrix causing a decrease of the sites likely to bind water molecules. However, it would be desirable to apply rheology for a better follow-up of this cross-linking phenomenon. The synthesized retrograde bioplastic having undergone a photonic stress shows better physical properties to be used as packaging and thus to answer the environmental protection.展开更多
With enormous amounts of food being wasted at every level of consumption,the future of food security is in jeopardy.The confusion aroused due to“best before”or“use by”can be eliminated by intelligent colorimetric ...With enormous amounts of food being wasted at every level of consumption,the future of food security is in jeopardy.The confusion aroused due to“best before”or“use by”can be eliminated by intelligent colorimetric indicators which communicate the quality of food.pH indicators have gained their attention because they are simple and visually informative.Using natural pigments to fabricate pH indicators can help reducing use of carcinogenic chemicals in packaging.In this work,anthocyanins extracted from a novel flower source named Ipomoea coccinea(ICE)were added to polyvinyl alcohol(PVA)and guar gum(GG)matrix in varying amounts and was applied as antioxidant and intelligent pH indicator film to monitor the freshness of chicken fillets and to visually communicate the quality of chicken.The pH indicator was characterized for halochromism,antioxidant activity,thermogravimetry,water solubility,water contact angle,surface morphology,colorimetry and X-ray diffractograms.The color change of the extract was observed from orange to red to yellow.Film with highest amount of anthocyanin extract has increased thickness of 150.5±17.86a(μm),decreased water vapor transmission rate of 4.95±0.29a(mg day1 cm^(-2))and has a crystallinity of 52.35%.Anthocyanins started to degrade at 65◦C according to thermogravimetric analysis.The film with 20%ICE showed an excellent color change in pH solutions and the highest antioxidant activity of~91%.The food study results suggested that the developed film has the potential to be employed as an active and intelligent visual indicator in poultry packaging.展开更多
文摘AIM： To investigate the active chloroform fraction of the ethanol extract oflpomoea carnea flowers on hematological changes in toluene diisocyanate-induced inflammation in Wistar rats. METHOD： Except for the control group, all of the rats were sensitized with intranasal application of 5 μL of 10% toluene diiso- cyanate （TDI） for 7 days. One week after second sensitization, all of the rats were provoked with 5 ~tL of 5% TDI to induce airway hypersensitivity. After the last challenge, blood and bronchoalvelor lavage （BAL） fluid were collected and subjected to total and differential leucocytes count. Flash chromatography was performed on the most active chloroform fraction to isolate an individual component. RESULTS： Treatment with the ethanolic extract and its chloroform fraction at an oral dose of 200 mg·kg^ -1 showed a significant decrease in circulating neutrophil and eosinophil in blood and BAL as compared with standard dexamethasone （DEXA）. The structure of the compound obtained from chloroform fraction oflpomea carnea was elucidated as stigmast-5, 22-dien-3β-ol on the basis of spectral data analysis. CONCLUSION： The chloroform fraction was found to be more effective to suppress airway hyper reactivity symptoms, and de- creased count of both total and differential inflammatory cells.
文摘Objective:To analyze the hematological effects of administering Ipomoea batatas(I.batatas)and Phyllanthus niruri(P.niruri) in the ICR mice.Methods:Powdered leaves of /.batatas and P.nintri were fed to mice for 4 weeks.A total of six groups were used to determine the effect of the plants to the complete blood count of the mouse.Group A(blank control) mice were feed with pellets only;Group B(negative control) mice were fed with pellets coated with honey;Group C(low dosage) mice were fed with honey-coated pellets and powdered leaves of 1.batatas at 10 g/kg body weight of the mouse;Group D(high dosage) mice were fed with honey-coated pellets and powdered leaves of I,batatas at 20 g/kg body weight of the mouse;Group E(low dosage) mice were fed with honey-coated pellets and powdered leaves of P.niruri at 10 g/kg body weight of the mouse:and Group F(high dosage) mice were fed with honey-coated pellets and powdered leaves of P.niruri at 20 g/kg body weight of the mouse.Complete blood count was performed on Days 0.14 and 28.Results:It was shown that I.batatas can increase the values of hematocrit and hemoglobin on both the low dose and high dose at Day 28 and red blood cells(RBC) on both Days 14 and28 of testing.On the other hand.P.niruri can increase RBC.hematocrit and hemoglobin on Day 28 with only the low dose.There were no significant differences with white blood cell,absolute granulocyte,lymphocyte and monocyte,and platelet counts observed for both plant samples.Conclusions:I.batatas and P.niruri have effects on the hematocrit,RBC and hemoglobin levels in mice.
文摘The work carried out here opens another perspective in the valorization of sw<span>eet potatoes produced in Congo Brazzaville other than those proposed by <b><i>BOULA</i></b> <b><i>and</i></b><span> <b><i>all</i></b></span>. We have shown in this work that the hydrophilic property of starch which limits the production of starch-based bioplastics can be inhibited by using the effects of photonic incandescence. Indeed, light significantly impacts the bioplastic matrix causing a decrease of the sites likely to bind water molecules. However, it would be desirable to apply rheology for a better follow-up of this cross-linking phenomenon. The synthesized retrograde bioplastic having undergone a photonic stress shows better physical properties to be used as packaging and thus to answer the environmental protection.
文摘With enormous amounts of food being wasted at every level of consumption,the future of food security is in jeopardy.The confusion aroused due to“best before”or“use by”can be eliminated by intelligent colorimetric indicators which communicate the quality of food.pH indicators have gained their attention because they are simple and visually informative.Using natural pigments to fabricate pH indicators can help reducing use of carcinogenic chemicals in packaging.In this work,anthocyanins extracted from a novel flower source named Ipomoea coccinea(ICE)were added to polyvinyl alcohol(PVA)and guar gum(GG)matrix in varying amounts and was applied as antioxidant and intelligent pH indicator film to monitor the freshness of chicken fillets and to visually communicate the quality of chicken.The pH indicator was characterized for halochromism,antioxidant activity,thermogravimetry,water solubility,water contact angle,surface morphology,colorimetry and X-ray diffractograms.The color change of the extract was observed from orange to red to yellow.Film with highest amount of anthocyanin extract has increased thickness of 150.5±17.86a(μm),decreased water vapor transmission rate of 4.95±0.29a(mg day1 cm^(-2))and has a crystallinity of 52.35%.Anthocyanins started to degrade at 65◦C according to thermogravimetric analysis.The film with 20%ICE showed an excellent color change in pH solutions and the highest antioxidant activity of~91%.The food study results suggested that the developed film has the potential to be employed as an active and intelligent visual indicator in poultry packaging.
