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| HAGGAG,M.W.; ABOU EL ELLA,S.M.; ABOUZIENA,H.F.. |
| ABSTRACT Water hyacinth (Eichhornia crassipes) is an oceanic macrophyte and one of the worst sea-going weeds in the world and Egypt. The grouping of substantial metals in water hyacinth was higher in roots than in shoots. Nutrient content e.g. ammonia, nitrate, nitrite and phosphate was higher in the shoots of water hyacinth. Water hyacinth is a wellspring of phytochemicals which have a medicinal function. In this study, the high degree of peroxidation and nonenzymatic antioxidant systems were detected in leaf extracts. The chemical analysis of the leaf extracts was performed using acetone, ethanol, methanol and n-Butyl alcohol. The fractionated extracts showed the presence of some medicine compounds that include phenols, protein, alkaloids, amino acids,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antifungal and antimicrobial; Biofungicide; Eichhornia crassipes; Leaf extracts. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100229 |
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| Einali,Alireza; Mazang-Ghasemi,Sahar; Valizadeh,Jafar; Noorozifar,Meisam. |
| ABSTRACT The present work investigated the effects of aqueous extracts of eucalyptus ( Eucalyptus globulus) and elderberry ( Sambucus ebulus) leaves on β-carotene productivity in Dunaliella salina, a green microalga. Leaf extracts from eucalyptus have greater amounts of phenolics and flavonoids, as well as greater ferric reducing antioxidant potential than elderberry. The extracts of both species greatly inhibited growth of algal suspensions. However, chlorophyll and β-carotene concentration increased in cells treated with leaf extracts, and the highest values were detected in 1 % eucalyptus and 2 % elderberry extracts. Fresh weight, total sugar, and protein content significantly increased following exposure of cells to different doses of leaf extracts.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-carotene; Dunaliella salina; Eucalyptus; Elderberry; Leaf extracts; Metabolites; Stress. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200180 |
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| MILANI,PAULA G.; FORMIGONI,MAYSA; DACOME,ANTONIO S.; BENOSSI,LIVIA; COSTA,CECÍLIA E.M. DA; COSTA,SILVIO C. DA. |
| ABSTRACT The aim of this study was to determine the composition and antioxidant potential of leaves of a new variety of Stevia rebaudiana (Stevia UEM-13). Stevia leaves of UEM-13 contain rebaudioside A as the main glycoside, while most wild Stevia plants contain stevioside. Furthermore can be multiplied by seed, which reduces the cost of plant culture techniques as other clonal varieties are multiplied by buds, requiring sophisticated and expensive seedling production systems. Ethanol and methanol were used in the extraction to determine the bioactive compounds. The methanolic extract was fractionated sequentially with hexane, chloroform, ethyl acetate and isobutanol, and the highest concentration of phenolic compounds and flavonoids was obtained in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioactive compounds; Glycosides; Leaf extracts; Phenolic compounds; New cultivar of Stevia. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401841 |
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