Natural substances like phenolic and flavonoid compounds from extracts of wild plants are used fo... more Natural substances like phenolic and flavonoid compounds from extracts of wild plants are used for the control of many plant diseases. Endophytic bacteria were isolated from 7 wild plants growing at Maarafai and Kancesorup Wadies on Jebel Elba, Egypt, and the effect of these endophytic bacterial were studied as an alternative tool against Podosphaera xanthii infecting squash plants. This study showed the efficacy of endophytic bacteria strains (Bacillus amyloliquefaciens strain BMAT1, B. firmus strain BMAT2, B. pumilus strain PMOE1 and B. subtilis strain BKEC1) for controlling powdery mildew of squash plants. The effects of fresh cultures of the four bacteria on disease severity in vivo were evaluated. Mixed treatment of the tested bacteria showed the greatest reduction in disease severity, increasing peroxidase, polyphenol oxidase, and total phenols in the squash leaves as well as crop yield. The highest concentrations of phenolic compounds were found in quinic and ellagic acids, while the highest concentrations of flavonoid components were found in apeginin. Treatment with a combination of four bacterial cultures increased the maximal activity of total phenols, peroxidase, and polyphenol oxidase. These findings suggested that endophytic bacterial strains could be used as environmentally friendly substitutes for synthetic fungicides to control powdery mildew of squash plants.
Universal journal of pharmaceutical research, Mar 15, 2024
Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found world... more Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found worldwide, but they are most common in Africa., Australia, and the countries of the Mediterranean. The Cactaceae family, which has more than 1500 species of cactus, includes prickly pears. Additionally, consumers are becoming more and more interested in it because it contains bioactive substances like carotenoids, sterols, polyunsaturated fatty acids, polyphenols, and vitamins that are linked to important biological and functional activities such as effects on antioxidants, inflammation, and hypoglycemia as it prospers in dry and semiarid areas, this plant is very effective in preventing desertification and can be exploited in fields and gardens as a fence. Although it is frequently used today to make culinary products like jams and juices, it is also eaten as a fruit. If one wishes to create novel products with health-promoting properties for food, cosmetics, or pharmaceutical fields, as a feasible wellspring of phytochemicals for practical food sources, natural additions, or nutritional supplements, prickly pears are affordable.
Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found world... more Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found worldwide, but they are most common in Africa., Australia, and the countries of the Mediterranean. The Cactaceae family, which has more than 1500 species of cactus, includes prickly pears. Additionally, consumers are becoming more and more interested in it because it contains bioactive substances like carotenoids, sterols, polyunsaturated fatty acids, polyphenols, and vitamins that are linked to important biological and functional activities such as effects on antioxidants, inflammation, and hypoglycemia as it prospers in dry and semiarid areas, this plant is very effective in preventing desertification and can be exploited in fields and gardens as a fence. Although it is frequently used today to make culinary products like jams and juices, it is also eaten as a fruit. If one wishes to create novel products with health-promoting properties for food, cosmetics, or pharmaceutical fields, as a feasible wellspring of phytochemicals for practical food sources, natural additions, or nutritional supplements, prickly pears are affordable.
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi...
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi. S. marianum had an influence on microorganisms growth in minced beef, the highest effect was 1.0% for 60 days (56 CFU). The most effective concentrations on lipid peroxidation prevention in minced beef were 1.5% for 3 days and 1.5 for 60 days.
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi. S. marianum had an influence on microorganisms growth in minced beef, the highest effect was 1.0% for 60 days (56 CFU). The most effective concentrations on lipid peroxidation prevention in minced beef were 1.5% for 3 days and 1.5 for 60 days.
Natural substances like phenolic and flavonoid compounds from extracts of wild plants are used fo... more Natural substances like phenolic and flavonoid compounds from extracts of wild plants are used for the control of many plant diseases. Endophytic bacteria were isolated from 7 wild plants growing at Maarafai and Kancesorup Wadies on Jebel Elba, Egypt, and the effect of these endophytic bacterial were studied as an alternative tool against Podosphaera xanthii infecting squash plants. This study showed the efficacy of endophytic bacteria strains (Bacillus amyloliquefaciens strain BMAT1, B. firmus strain BMAT2, B. pumilus strain PMOE1 and B. subtilis strain BKEC1) for controlling powdery mildew of squash plants. The effects of fresh cultures of the four bacteria on disease severity in vivo were evaluated. Mixed treatment of the tested bacteria showed the greatest reduction in disease severity, increasing peroxidase, polyphenol oxidase, and total phenols in the squash leaves as well as crop yield. The highest concentrations of phenolic compounds were found in quinic and ellagic acids, while the highest concentrations of flavonoid components were found in apeginin. Treatment with a combination of four bacterial cultures increased the maximal activity of total phenols, peroxidase, and polyphenol oxidase. These findings suggested that endophytic bacterial strains could be used as environmentally friendly substitutes for synthetic fungicides to control powdery mildew of squash plants.
Universal journal of pharmaceutical research, Mar 15, 2024
Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found world... more Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found worldwide, but they are most common in Africa., Australia, and the countries of the Mediterranean. The Cactaceae family, which has more than 1500 species of cactus, includes prickly pears. Additionally, consumers are becoming more and more interested in it because it contains bioactive substances like carotenoids, sterols, polyunsaturated fatty acids, polyphenols, and vitamins that are linked to important biological and functional activities such as effects on antioxidants, inflammation, and hypoglycemia as it prospers in dry and semiarid areas, this plant is very effective in preventing desertification and can be exploited in fields and gardens as a fence. Although it is frequently used today to make culinary products like jams and juices, it is also eaten as a fruit. If one wishes to create novel products with health-promoting properties for food, cosmetics, or pharmaceutical fields, as a feasible wellspring of phytochemicals for practical food sources, natural additions, or nutritional supplements, prickly pears are affordable.
Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found world... more Originally from Mexico, today, prickly pears (Opuntia ficus-indica (L.) Mill.) can be found worldwide, but they are most common in Africa., Australia, and the countries of the Mediterranean. The Cactaceae family, which has more than 1500 species of cactus, includes prickly pears. Additionally, consumers are becoming more and more interested in it because it contains bioactive substances like carotenoids, sterols, polyunsaturated fatty acids, polyphenols, and vitamins that are linked to important biological and functional activities such as effects on antioxidants, inflammation, and hypoglycemia as it prospers in dry and semiarid areas, this plant is very effective in preventing desertification and can be exploited in fields and gardens as a fence. Although it is frequently used today to make culinary products like jams and juices, it is also eaten as a fruit. If one wishes to create novel products with health-promoting properties for food, cosmetics, or pharmaceutical fields, as a feasible wellspring of phytochemicals for practical food sources, natural additions, or nutritional supplements, prickly pears are affordable.
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi...
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi. S. marianum had an influence on microorganisms growth in minced beef, the highest effect was 1.0% for 60 days (56 CFU). The most effective concentrations on lipid peroxidation prevention in minced beef were 1.5% for 3 days and 1.5 for 60 days.
The present research was carried out for two main targets, the first one is phytochemical and bio... more The present research was carried out for two main targets, the first one is phytochemical and biological screening of the aerial parts of Silybum marianum. The second one is the possibility of using Silybum marianum ethanolic extract as natural preservative for extending minced beef shelf-life during refrigeration and frozen storage. The chemical analysis of dry matter revealed that total ash content was 13.04% of D.M, crude fibers, total phenolic compounds, total flavonoids and total tannins were (24.59%, 9.16%, 0.84% and (0.08%), respectively. The highest values of antioxidant activity were recorded in ethyl acetate and ethyl alcohol 70%extacts, respectively for successive and selective solvents with values of 82.45% and 58.85% for successive solvents, 86.84% and 70.50% for selective solvents, respectively. Antimicrobial activity showed that, S. marianum L. Gaertn. had effect on gram positive, gram negative bacteria and yeast but had no effect on different strains of studied fungi. S. marianum had an influence on microorganisms growth in minced beef, the highest effect was 1.0% for 60 days (56 CFU). The most effective concentrations on lipid peroxidation prevention in minced beef were 1.5% for 3 days and 1.5 for 60 days.
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